{"id":4814,"date":"2026-08-05T15:17:42","date_gmt":"2026-08-05T07:17:42","guid":{"rendered":"https:\/\/www.nickelcasting.com\/nickel-alloy-tube-astm-b622-chemical-plants\/"},"modified":"2026-08-05T15:17:43","modified_gmt":"2026-08-05T07:17:43","slug":"nickel-alloy-tube-astm-b622-chemical-plants","status":"publish","type":"post","link":"https:\/\/www.nickelcasting.com\/ar\/nickel-alloy-tube-astm-b622-chemical-plants\/","title":{"rendered":"\u0623\u0646\u0627\u0628\u064a\u0628 \u0633\u0628\u0627\u0626\u0643 \u0627\u0644\u0646\u064a\u0643\u0644 ASTM B622 \u0644\u0644\u0645\u0635\u0627\u0646\u0639 \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0626\u064a\u0629: \u062f\u0644\u064a\u0644 \u0627\u0644\u0634\u0631\u0627\u0621"},"content":{"rendered":"
\"\u0623\u0646\u0627\u0628\u064a\u0628<\/figure>\n

\u0627\u0644\u0628\u062d\u062b \u0639\u0646 nickel alloy tube ASTM B622 for chemical plants<\/strong> usually indicates a piping, heat-exchanger, condenser, coil, instrumentation or reactor project where a nickel alloy tube must be purchased to a recognized product standard. ASTM B622 covers seamless nickel and nickel-cobalt alloy pipe and tube for listed grades, but the standard alone does not tell the buyer which alloy is correct for hydrochloric acid, sulfuric acid, wet chlorine, chloride brine, hot caustic or mixed chemical service.<\/p>\n

The technical decision combines the grade, tube dimensions, pressure, temperature, fluid chemistry, construction code, connection method, inspection scope and delivery schedule. Hastelloy C-276, C-22, Incoloy 825, Inconel 625, Nickel 200, Nickel 201, Alloy 59 and other grades may appear in a plant material list. Each grade has a service window that should be checked against the process rather than assumed from the alloy family name.<\/p>\n

This guide is written for chemical plant engineers, EPC procurement teams, maintenance buyers and international suppliers. It shows how to create an ASTM B622 RFQ that is clear enough for a supplier to quote a comparable product.<\/p>\n

\u0627\u062a\u0635\u0644 \u0628\u0640 28Nickel \u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0639\u0631\u0636 \u0623\u0633\u0639\u0627\u0631 \u0644\u0644\u0645\u0634\u0631\u0648\u0639<\/a> \u0645\u0639 \u0630\u0643\u0631 \u0627\u0644\u0633\u0628\u064a\u0643\u0629 \u0623\u0648 \u0627\u0644\u062f\u0631\u062c\u0627\u062a \u0627\u0644\u0645\u0642\u062a\u0631\u062d\u0629\u060c \u0648\u0634\u0643\u0644 \u0627\u0644\u0645\u0646\u062a\u062c\u060c \u0648\u0627\u0644\u0623\u0628\u0639\u0627\u062f\u060c \u0648\u0627\u0644\u0643\u0645\u064a\u0629\u060c \u0648\u0638\u0631\u0648\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644\u060c \u0648\u0627\u0644\u0648\u062c\u0647\u0629\u060c \u0648\u062c\u062f\u0648\u0644 \u0627\u0644\u062a\u0633\u0644\u064a\u0645.<\/p>\n

nickel alloy tube ASTM B622 for chemical plants: The Fast Selection Decision<\/h2>\n

\u064a\u0628\u062f\u0623 \u0627\u062a\u062e\u0627\u0630 \u0627\u0644\u0642\u0631\u0627\u0631 \u0627\u0644\u0623\u0633\u0631\u0639 \u0648\u0627\u0644\u0623\u0643\u062b\u0631 \u0645\u0648\u062b\u0648\u0642\u064a\u0629 \u0628\u0648\u0638\u064a\u0641\u0629 \u0627\u0644\u062e\u062f\u0645\u0629. \u0644\u0627 \u062a\u062e\u062a\u0631 \u0645\u0646\u062a\u062c\u064b\u0627 \u0645\u0646 \u0633\u0628\u0627\u0626\u0643 \u0627\u0644\u0646\u064a\u0643\u0644 \u0644\u0645\u062c\u0631\u062f \u0623\u0646\u0647 \u064a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u0646\u0633\u0628\u0629 \u0623\u0639\u0644\u0649 \u0645\u0646 \u0627\u0644\u0646\u064a\u0643\u0644 \u0623\u0648 \u0644\u0623\u0646 \u0627\u0644\u0645\u0648\u0631\u062f \u0644\u062f\u064a\u0647 \u0645\u062e\u0632\u0648\u0646 \u0645\u0646\u0647. \u064a\u062c\u0628 \u0623\u0646 \u062a\u062a\u0648\u0627\u0641\u0642 \u0627\u0644\u0634\u0643\u0644 \u0627\u0644\u0645\u0637\u0644\u0648\u0628 \u0648\u0627\u0644\u062f\u0631\u062c\u0629 \u0648\u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0648\u0638\u0631\u0648\u0641 \u0627\u0644\u062e\u062f\u0645\u0629 \u0645\u0639\u064b\u0627. \u0627\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u062c\u062f\u0648\u0644 \u0627\u0644\u062a\u0627\u0644\u064a \u0643\u0623\u062f\u0627\u0629 \u0641\u0631\u0632 \u0642\u0628\u0644 \u0627\u0644\u0645\u0631\u0627\u062c\u0639\u0629 \u0627\u0644\u062a\u0641\u0635\u064a\u0644\u064a\u0629 \u0644\u0644\u062a\u0635\u0645\u064a\u0645.<\/p>\n\n\n\n\n\n\n\n\n\n
\u0633\u0624\u0627\u0644 \u062d\u0648\u0644 \u0627\u0644\u0645\u0634\u0631\u0648\u0639<\/th>\n\u0646\u0642\u0637\u0629 \u0627\u0646\u0637\u0644\u0627\u0642 \u0639\u0645\u0644\u064a\u0629<\/th>\n\u0645\u0627 \u064a\u062c\u0628 \u062a\u0623\u0643\u064a\u062f\u0647<\/th>\n<\/tr>\n<\/thead>\n
Mixed-acid process line<\/td>\nC-276, C-22, Alloy 59 or a related high-alloy grade may be evaluated.<\/td>\nList all acids, oxidants, chlorides, temperature and velocity.<\/td>\n<\/tr>\n
Hot caustic service<\/td>\nNickel 200 or 201 may be considered in qualified conditions.<\/td>\nConfirm sulfur, chlorides, temperature and water addition.<\/td>\n<\/tr>\n
Chloride heat exchanger<\/td>\nInconel 625, Incoloy 825 or other high-alloy grades may fit the duty.<\/td>\nReview deposits, crevices, oxygen, flow and cleaning chemistry.<\/td>\n<\/tr>\n
High-pressure line<\/td>\nTube wall and allowable stress must be tied to the code and design temperature.<\/td>\nState nominal or minimum wall and external-pressure cases.<\/td>\n<\/tr>\n
\u0641\u062a\u0631\u0629 \u0635\u064a\u0627\u0646\u0629 \u0637\u0648\u064a\u0644\u0629<\/td>\nA broader corrosion margin can justify higher material cost.<\/td>\nCompare total life-cycle cost and spare strategy.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u064a\u0647\u062f\u0641 \u0647\u0630\u0627 \u0627\u0644\u062c\u062f\u0648\u0644 \u0625\u0644\u0649 \u062a\u062d\u0633\u064a\u0646 \u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631 \u0627\u0644\u0623\u0648\u0644\u064a\u060c \u0648\u0644\u064a\u0633 \u0625\u0644\u0649 \u0627\u0633\u062a\u0628\u062f\u0627\u0644 \u0627\u0644\u0645\u0648\u0627\u0641\u0642\u0629 \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629. \u0641\u0642\u062f \u064a\u0624\u062f\u064a \u0623\u064a \u0627\u062e\u062a\u0644\u0627\u0641 \u0637\u0641\u064a\u0641 \u0641\u064a \u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629\u060c \u0623\u0648 \u0646\u0633\u0628\u0629 \u0627\u0644\u0643\u0644\u0648\u0631\u064a\u062f\u060c \u0623\u0648 \u062a\u0631\u0643\u064a\u0632 \u0627\u0644\u062d\u0645\u0636\u060c \u0623\u0648 \u062f\u0648\u0631\u0629 \u0627\u0644\u0636\u063a\u0637\u060c \u0623\u0648 \u0627\u0644\u0633\u0631\u0639\u0629\u060c \u0623\u0648 \u0627\u0644\u0645\u0639\u062f\u0646 \u0627\u0644\u0645\u0631\u062a\u0628\u0637 \u0625\u0644\u0649 \u062a\u063a\u064a\u064a\u0631 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0627\u062f\u0629 \u0645\u0646 \u0639\u0627\u0626\u0644\u0629 \u0633\u0628\u064a\u0643\u0629 \u0625\u0644\u0649 \u0623\u062e\u0631\u0649. \u064a\u0631\u062c\u0649 \u062a\u062d\u062f\u064a\u062f \u0623\u0633\u0648\u0623 \u0627\u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u0645\u062d\u062a\u0645\u0644\u0629 \u0648\u0646\u062a\u0627\u0626\u062c \u0627\u0644\u0641\u0634\u0644 \u0642\u0628\u0644 \u0637\u0644\u0628 \u0627\u0644\u0639\u0631\u0636 \u0627\u0644\u0646\u0647\u0627\u0626\u064a.<\/p>\n

\u0645\u0627 \u0627\u0644\u0630\u064a \u064a\u0639\u0646\u064a\u0647 \u0645\u0635\u0637\u0644\u062d \u0627\u0644\u0628\u062d\u062b \u062d\u0642\u064b\u0651\u0627<\/h2>\n

ASTM B622 is a product route and dimensional framework, not a generic chemical-plant alloy recommendation. The grade list and chemistry limits should be checked against the active standard, and the final tube must be suitable for the service on both the inside and outside surfaces. A shell-side chemical in a heat exchanger may be more aggressive than the tube-side fluid.<\/p>\n

Chemical plants also create transient exposures. Start-up water, flushing, neutralization, steam-out, cleaning acid, hot condensate and a change in feed composition can control the failure mechanism. Put these events into the RFQ so the supplier and engineer are not comparing only steady-state conditions.<\/p>\n

\u0645\u0646 \u0627\u0644\u0646\u0627\u062d\u064a\u0629 \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629\u060c \u063a\u0627\u0644\u0628\u064b\u0627 \u0645\u0627 \u064a\u0633\u062a\u062e\u062f\u0645 \u0627\u0644\u0645\u0634\u062a\u0631\u0648\u0646 \u0639\u0628\u0627\u0631\u0629 \u0648\u0627\u062d\u062f\u0629 \u0644\u0648\u0635\u0641 \u0639\u062f\u0629 \u0627\u062d\u062a\u064a\u0627\u062c\u0627\u062a \u0645\u062e\u062a\u0644\u0641\u0629: \u0633\u0644\u0639\u0629 \u0645\u062a\u0648\u0641\u0631\u0629 \u0641\u064a \u0627\u0644\u0645\u062e\u0632\u0648\u0646\u060c \u0623\u0648 \u0644\u0648\u062d \u0623\u0648 \u0642\u0636\u064a\u0628 \u0628\u062d\u062c\u0645 \u064a\u0646\u0627\u0633\u0628 \u0645\u0634\u0631\u0648\u0639\u064b\u0627 \u0645\u0639\u064a\u0646\u064b\u0627\u060c \u0623\u0648 \u0644\u0641\u0627\u0641\u0629 \u0644\u062e\u0637 \u0625\u0646\u062a\u0627\u062c \u0645\u0633\u062a\u0645\u0631\u060c \u0623\u0648 \u0623\u0646\u0628\u0648\u0628 \u0644\u0645\u0628\u0627\u062f\u0644 \u062d\u0631\u0627\u0631\u064a\u060c \u0623\u0648 \u0645\u0643\u0648\u0646 \u0628\u062f\u064a\u0644. \u064a\u0645\u0643\u0646 \u0644\u0644\u0645\u0648\u0631\u062f \u0627\u0644\u0627\u0633\u062a\u062c\u0627\u0628\u0629 \u0628\u0634\u0643\u0644 \u0623\u0633\u0631\u0639 \u0639\u0646\u062f\u0645\u0627 \u064a\u062d\u062f\u062f \u0627\u0644\u0627\u0633\u062a\u0641\u0633\u0627\u0631 \u0631\u0642\u0645 \u062a\u0639\u0631\u064a\u0641 \u0627\u0644\u0645\u0639\u062f\u0627\u062a\u060c \u0648\u0627\u0644\u0633\u0627\u0626\u0644 \u0627\u0644\u062a\u0634\u063a\u064a\u0644\u064a\u060c \u0648\u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629\u060c \u0648\u0627\u0644\u0636\u063a\u0637\u060c \u0648\u0627\u0644\u0623\u0628\u0639\u0627\u062f\u060c \u0648\u0627\u0644\u0643\u0645\u064a\u0629\u060c \u0648\u0627\u0644\u0648\u062c\u0647\u0629. \u0643\u0645\u0627 \u062a\u062a\u064a\u062d \u0647\u0630\u0647 \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0645\u0642\u0627\u0631\u0646\u0629 \u0639\u0631\u0648\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631 \u0627\u0644\u0645\u0642\u062f\u0645\u0629 \u0645\u0646 \u0645\u062e\u062a\u0644\u0641 \u0627\u0644\u0645\u0648\u0631\u062f\u064a\u0646.<\/p>\n

\u0645\u062c\u0645\u0648\u0639\u0627\u062a \u0627\u0644\u062f\u0631\u062c\u0627\u062a \u0648\u0645\u0644\u0627\u0621\u0645\u0629 \u0627\u0644\u0645\u0648\u0627\u062f<\/h2>\n

\u0627\u0644\u062a\u0635\u0646\u064a\u0641\u0627\u062a \u0627\u0644\u0648\u0627\u0631\u062f\u0629 \u0623\u062f\u0646\u0627\u0647 \u062a\u0645\u062b\u0644 \u062e\u064a\u0627\u0631\u0627\u062a \u0645\u062d\u062a\u0645\u0644\u0629\u060c \u0648\u0644\u064a\u0633\u062a \u0645\u0648\u0627\u0641\u0642\u0627\u062a \u062a\u0644\u0642\u0627\u0626\u064a\u0629. \u064a\u0645\u0643\u0646 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0623\u0633\u0645\u0627\u0621 \u0633\u0628\u0627\u0626\u0643 \u0627\u0644\u0646\u064a\u0643\u0644 \u0641\u064a \u0623\u0634\u0643\u0627\u0644 \u0648\u0645\u0639\u0627\u064a\u064a\u0631 \u0645\u0646\u062a\u062c\u0627\u062a \u0645\u062e\u062a\u0644\u0641\u0629\u060c \u0648\u0642\u062f \u064a\u0643\u0648\u0646 \u0644\u0644\u0627\u0633\u0645 \u0627\u0644\u062a\u062c\u0627\u0631\u064a \u0646\u0641\u0633\u0647 \u0639\u062f\u0629 \u0645\u0631\u0627\u062c\u0639 UNS \u0623\u0648 \u0645\u0631\u0627\u062c\u0639 \u062e\u0627\u0635\u0629 \u0628\u0627\u0644\u0645\u0646\u062a\u062c. \u064a\u0631\u062c\u0649 \u0627\u0644\u062a\u0623\u0643\u062f \u0645\u0646 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0633\u0627\u0631\u064a\u0629\u060c \u0648\u0634\u0643\u0644 \u0627\u0644\u0645\u0646\u062a\u062c\u060c \u0648\u0627\u0644\u062d\u0627\u0644\u0629\u060c \u0648\u0627\u0644\u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0626\u064a\u060c \u0648\u0627\u0644\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0645\u064a\u0643\u0627\u0646\u064a\u0643\u064a\u0629\u060c \u0648\u0642\u0648\u0627\u0639\u062f \u0642\u0628\u0648\u0644 \u0627\u0644\u0645\u0634\u0631\u0648\u0639 \u0642\u0628\u0644 \u062a\u0642\u062f\u064a\u0645 \u0627\u0644\u0637\u0644\u0628.<\/p>\n\n\n\n\n\n\n\n\n\n
\u0639\u0627\u0626\u0644\u0629 \u0627\u0644\u062f\u0631\u062c\u0627\u062a<\/th>\n\u0644\u0645\u0627\u0630\u0627 \u0642\u062f \u064a\u064f\u0646\u0638\u0631 \u0641\u064a \u0630\u0644\u0643<\/th>\n\u062d\u062f\u0648\u062f \u0627\u0644\u0645\u0631\u0627\u062c\u0639\u0629<\/th>\n<\/tr>\n<\/thead>\n
\u0647\u0627\u0633\u062a\u064a\u0644\u0648\u064a C-276<\/td>\nBroad corrosion resistance for mixed acids, wet chlorine, chlorides and contaminated process streams.<\/td>\nConfirm temperature, flow and the exact B622 grade designation.<\/td>\n<\/tr>\n
\u0647\u0627\u0633\u062a\u064a\u0644\u0648\u064a C-22<\/td>\nStrong candidate for oxidizing chloride and mixed chemical environments.<\/td>\nReview oxidants, cleaning chemistry and availability.<\/td>\n<\/tr>\n
\u0625\u0646\u0643\u0648\u0644\u0648\u064a 825<\/td>\nBalanced grade for sulfuric, phosphoric and chloride-bearing chemical service.<\/td>\nConfirm temperature, crevices and external environment.<\/td>\n<\/tr>\n
\u0625\u0646\u0643\u0648\u0646\u064a\u0644 625<\/td>\nHigh-strength, chloride-resistant alloy for demanding piping and exchanger duties.<\/td>\nCompare corrosion need with mechanical design and cost.<\/td>\n<\/tr>\n
\u0627\u0644\u0646\u064a\u0643\u0644 200 \/ 201<\/td>\nUseful for selected caustic or reducing conditions.<\/td>\nDo not use for oxidizing mixed-acid conditions without a specific review.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0644\u0627 \u062a\u0639\u062a\u0628\u0631 \u0627\u0644\u0645\u0648\u0627\u062f \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0633\u0628\u0627\u0626\u0643 \u0628\u0627\u0644\u0636\u0631\u0648\u0631\u0629 \u0627\u0644\u062e\u064a\u0627\u0631 \u0627\u0644\u0623\u0643\u062b\u0631 \u0627\u0642\u062a\u0635\u0627\u062f\u064a\u0629 \u0623\u0648 \u0627\u0644\u0623\u0635\u062d \u0645\u0646 \u0627\u0644\u0646\u0627\u062d\u064a\u0629 \u0627\u0644\u062a\u0642\u0646\u064a\u0629. \u0641\u0642\u062f \u064a\u0624\u062f\u064a \u0627\u062e\u062a\u064a\u0627\u0631 \u0645\u0627\u062f\u0629 \u0645\u0646\u062e\u0641\u0636\u0629 \u0627\u0644\u0633\u0628\u0627\u0626\u0643 \u0630\u0627\u062a \u0647\u0627\u0645\u0634 \u062a\u0634\u063a\u064a\u0644 \u0645\u0624\u0643\u062f \u0625\u0644\u0649 \u062e\u0641\u0636 \u0627\u0644\u062a\u0643\u0644\u0641\u0629\u060c \u0641\u064a \u062d\u064a\u0646 \u064a\u0645\u0643\u0646 \u062a\u0628\u0631\u064a\u0631 \u0627\u062e\u062a\u064a\u0627\u0631 \u0645\u0627\u062f\u0629 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0633\u0628\u0627\u0626\u0643 \u0639\u0646\u062f\u0645\u0627 \u064a\u0643\u0648\u0646 \u0627\u0644\u0648\u0635\u0648\u0644 \u0625\u0644\u064a\u0647\u0627 \u0635\u0639\u0628\u064b\u0627\u060c \u0623\u0648 \u0639\u0646\u062f\u0645\u0627 \u064a\u0624\u062f\u064a \u0623\u064a \u0639\u0637\u0644 \u0625\u0644\u0649 \u062a\u0644\u0648\u062b \u0645\u0633\u0627\u0631 \u0627\u0644\u0625\u0646\u062a\u0627\u062c\u060c \u0623\u0648 \u0639\u0646\u062f\u0645\u0627 \u064a\u062a\u0637\u0644\u0628 \u0627\u0633\u062a\u0628\u062f\u0627\u0644\u0647\u0627 \u062a\u0648\u0642\u0641\u064b\u0627 \u0643\u0628\u064a\u0631\u064b\u0627 \u0639\u0646 \u0627\u0644\u062a\u0634\u063a\u064a\u0644. \u064a\u062c\u0628 \u0623\u0646 \u062a\u064f\u0624\u062e\u0630 \u062a\u0643\u0644\u0641\u0629 \u062f\u0648\u0631\u0629 \u0627\u0644\u062d\u064a\u0627\u0629 \u0641\u064a \u0627\u0644\u0627\u0639\u062a\u0628\u0627\u0631 \u062c\u0646\u0628\u064b\u0627 \u0625\u0644\u0649 \u062c\u0646\u0628 \u0645\u0639 \u0633\u0639\u0631 \u0627\u0644\u0645\u0627\u062f\u0629 \u0639\u0646\u062f \u0627\u062a\u062e\u0627\u0630 \u0627\u0644\u0642\u0631\u0627\u0631.<\/p>\n

\u0639\u0646\u062f\u0645\u0627 \u064a\u0642\u0627\u0631\u0646 \u0645\u0634\u0631\u0648\u0639 \u0645\u0627 \u062f\u0631\u062c\u062a\u064a\u0646 \u0645\u0646 \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629\u060c \u064a\u062c\u0628 \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0646\u0641\u0633 \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0644\u0643\u0644 \u0645\u0631\u0634\u062d: \u0646\u0641\u0633 \u0627\u0644\u0641\u0627\u0635\u0644 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u060c \u0648\u0646\u0641\u0633 \u0627\u0644\u062a\u0631\u0643\u064a\u0632 \u0623\u0648 \u062a\u0631\u0643\u064a\u0628\u0629 \u0627\u0644\u063a\u0627\u0632\u060c \u0648\u0646\u0641\u0633 \u0634\u0643\u0644 \u0627\u0644\u0645\u0646\u062a\u062c\u060c \u0648\u0646\u0641\u0633 \u0627\u0644\u0633\u0645\u0627\u0643\u0629 \u0623\u0648 \u0627\u0644\u0642\u0637\u0631\u060c \u0648\u0646\u0641\u0633 \u0627\u0644\u0639\u0645\u0631 \u0627\u0644\u062a\u0635\u0645\u064a\u0645\u064a\u060c \u0648\u0646\u0641\u0633 \u0627\u0641\u062a\u0631\u0627\u0636\u0627\u062a \u0627\u0644\u062a\u0635\u0646\u064a\u0639. \u062a\u062c\u0646\u0628 \u062e\u0644\u0637 \u0645\u0646\u062d\u0646\u0649 \u0645\u062e\u062a\u0628\u0631\u064a \u0644\u0638\u0631\u0641 \u0645\u0639\u064a\u0646 \u0645\u0639 \u0648\u0631\u0642\u0629 \u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0645\u0648\u0631\u062f \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0638\u0631\u0641 \u0622\u062e\u0631\u060c \u0648\u0648\u0635\u0641 \u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0628\u0623\u0646\u0647\u0627 \u0645\u0642\u0627\u0631\u0646\u0629 \u0645\u0628\u0627\u0634\u0631\u0629.<\/p>\n

\u0634\u0631\u0648\u0637 \u0627\u0644\u062e\u062f\u0645\u0629 \u0627\u0644\u062a\u064a \u062a\u062d\u062f\u062f \u0627\u0644\u062a\u0635\u0645\u064a\u0645<\/h2>\n

The chemical description should include concentration, temperature, pressure, velocity, solids, oxygen, water, gas phase and cleaning chemistry. If the tube is in a heat exchanger, list both fluids and the direction of flow. A grade that works on one side may not work on the other.<\/p>\n

Crevice conditions around tube supports, tubesheets, gaskets, clamps, bends and deposits can be more aggressive than open flow. The design should include drainage and cleaning access, while the material review should consider the least-aerated and most concentrated locations.<\/p>\n

High velocity, flashing, entrained solids and impingement can produce erosion-corrosion. State nozzle geometry, flow rate, density, particle loading and the expected operating range. If velocity changes during start-up or recycle, include the transient.<\/p>\n

Outside exposure matters. Insulation can trap moisture, carbon steel supports can create galvanic coupling, and external chloride spray can attack a tube that is internally protected. Review the tube’s full installed environment.<\/p>\n

\u062e\u0631\u064a\u0637\u0629 \u0627\u0644\u062a\u0637\u0628\u064a\u0642<\/h2>\n

Chemical reactor coils<\/h3>\n

Reactor coils may see heat release, acid or chloride chemistry, pressure cycling and deposits. ASTM B622 tube can be considered when a seamless nickel alloy product is required for the internal coil or connected line.<\/p>\n

Specify OD, wall, coil radius, straight length, fluid side, design temperature, pressure, support spacing and the connection method. A coil drawing is more useful than a generic tube description.<\/p>\n

Absorber and scrubber piping<\/h3>\n

Wet gas equipment creates acid mist, chloride, sulfur compounds and temperature gradients. Tube and pipe near the inlet, demister, drain and recirculation points can have different risks.<\/p>\n

Ask for a material map that separates liquid, vapor and splash zones. The high-alloy tube may be needed only in the most aggressive sections.<\/p>\n

\u0627\u0644\u0645\u0628\u0627\u062f\u0644\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 \u0648\u0627\u0644\u0645\u0643\u062b\u0641\u0627\u062a<\/h3>\n

Tube material must survive both fluids, differential pressure, vibration, cleaning, tube-sheet joining and long operating hours. B622 may be compared with B163 or other application standards depending on the grade and equipment.<\/p>\n

State shell-side and tube-side chemistry, temperature, pressure, flow velocity, tube length, support arrangement and the permitted cleaning process.<\/p>\n

Chemical transfer lines<\/h3>\n

Transfer lines see pumps, valves, start-stop cycles, flushing and possible water or air ingress. The alloy and wall should be selected from the transient as well as the normal chemistry.<\/p>\n

Include line class, design code, connection standard, insulation, heat tracing, slope, drain points and required arrival date.<\/p>\n

\u0645\u0644\u0627\u062d\u0638\u0627\u062a \u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0648\u0627\u0644\u062a\u0635\u0645\u064a\u0645<\/h2>\n

Tube wall should be calculated from design pressure, temperature-dependent allowable stress, corrosion allowance, external pressure, ovality and fabrication tolerance. State whether the purchase is based on nominal wall or guaranteed minimum wall so suppliers quote on the same basis.<\/p>\n

The connection method can influence material selection. Tube may be expanded, seal-welded, butt-welded, socket-welded, flared, brazed or mechanically joined. The project should identify the joint design and the filler or gasket compatibility before the tube grade is finalized.<\/p>\n

Cleanliness and surface condition may be important in chemical, pharmaceutical, semiconductor or high-purity service. The requirement should be written in terms of residue, particles, roughness and cleaning method rather than a vague polished or bright description.<\/p>\n

A seamless product does not eliminate all welds in a system. Circumferential joints, branch connections and tube-to-tubesheet joints still require qualified procedures and inspection. The material RFQ should connect the tube standard to the fabrication plan.<\/p>\n

\u0627\u0644\u0623\u0628\u0639\u0627\u062f\u060c \u0627\u0644\u062a\u0648\u0631\u064a\u062f \u0648\u0627\u0644\u062a\u0648\u0627\u0641\u0631<\/h2>\n

\u064a\u062c\u0628 \u062a\u062d\u062f\u064a\u062f \u0634\u0643\u0644 \u0627\u0644\u0645\u0646\u062a\u062c \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u062a\u064a \u062a\u062d\u062f\u062f \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u0646\u0647\u0627\u0626\u064a\u0629. \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0623\u0644\u0648\u0627\u062d\u060c \u0642\u062f \u062a\u0634\u0645\u0644 \u0647\u0630\u0647 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0633\u0645\u0627\u0643\u0629 \u0648\u0627\u0644\u0639\u0631\u0636 \u0648\u0627\u0644\u0637\u0648\u0644 \u0648\u0627\u0644\u062a\u0633\u0637\u064a\u062d. \u0623\u0645\u0627 \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0642\u0636\u0628\u0627\u0646\u060c \u0641\u0642\u062f \u062a\u0634\u0645\u0644 \u0627\u0644\u0642\u0637\u0631 \u0648\u0627\u0644\u0645\u0642\u0637\u0639 \u0627\u0644\u0637\u0648\u0644\u064a \u0648\u0627\u0644\u0637\u0648\u0644 \u0648\u0627\u0644\u0627\u0633\u062a\u0642\u0627\u0645\u0629 \u0648\u0627\u0644\u0647\u0627\u0645\u0634. \u0623\u0645\u0627 \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0645\u0644\u0641\u060c \u0641\u0642\u062f \u062a\u0634\u0645\u0644 \u0627\u0644\u0633\u0645\u0627\u0643\u0629 \u0648\u0627\u0644\u0639\u0631\u0636 \u0648\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0644\u0644\u0645\u0644\u0641 \u0648\u0648\u0632\u0646\u0647. \u0648\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0623\u0646\u0628\u0648\u0628\u060c \u0641\u0642\u062f \u062a\u0634\u0645\u0644 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a \u0648\u0633\u0645\u0627\u0643\u0629 \u0627\u0644\u062c\u062f\u0627\u0631 \u0627\u0644\u0627\u0633\u0645\u064a\u0629 \u0623\u0648 \u0627\u0644\u062f\u0646\u064a\u0627 \u0648\u0627\u0644\u0637\u0648\u0644 \u0648\u0627\u0644\u0628\u064a\u0636\u0627\u0648\u064a\u0629 \u0648\u0627\u0644\u0627\u0633\u062a\u0642\u0627\u0645\u0629. \u0648\u0644\u0627 \u064a\u0646\u0628\u063a\u064a \u0623\u0646 \u064a\u0636\u0637\u0631 \u0627\u0644\u0645\u0648\u0631\u062f \u0625\u0644\u0649 \u0627\u0633\u062a\u0646\u062a\u0627\u062c \u0647\u0630\u0647 \u0627\u0644\u0642\u064a\u0645 \u0645\u0646 \u0627\u0644\u0643\u0644\u0645\u0629 \u0627\u0644\u0645\u0641\u062a\u0627\u062d\u064a\u0629 \u0648\u062d\u062f\u0647\u0627.<\/p>\n\n\n\n\n\n\n\n\n\n
\u0642\u0633\u0645 \u0637\u0644\u0628\u0627\u062a \u0639\u0631\u0648\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631<\/th>\n\u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0627\u0644\u0645\u0637\u0644\u0648\u0628 \u0630\u0643\u0631\u0647\u0627<\/th>\n\u0645\u0627 \u0623\u0647\u0645\u064a\u0629 \u0630\u0644\u0643<\/th>\n<\/tr>\n<\/thead>\n
\u0642\u064a\u0627\u0633\u064a<\/td>\nASTM B622 grade, UNS number, ASME SB equivalent, edition and project supplements.<\/td>\n<\/tr>\n
\u0627\u0644\u0623\u0628\u0639\u0627\u062f<\/td>\nOutside diameter, nominal or minimum wall, length, straightness, ovality and quantity.<\/td>\n<\/tr>\n
\u0627\u0644\u062e\u062f\u0645\u0629<\/td>\nFluid composition, temperature, pressure, velocity, deposits, cleaning and external environment.<\/td>\n<\/tr>\n
Equipment<\/td>\nReactor, scrubber, heat exchanger, condenser, transfer line, instrumentation or coil.<\/td>\n<\/tr>\n
\u062a\u062c\u0627\u0631\u064a<\/td>\nStock or production route, delivery location, required arrival date, spares and quote validity.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u064a\u064f\u0639\u062f \u0627\u0644\u062a\u0648\u0627\u0641\u0631 \u062c\u0632\u0621\u064b\u0627 \u0645\u0646 \u0627\u0644\u062a\u062e\u0637\u064a\u0637 \u0627\u0644\u0641\u0646\u064a. \u0642\u062f \u062a\u0643\u0648\u0646 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 \u0648\u0627\u0644\u062f\u0631\u062c\u0627\u062a \u0627\u0644\u0634\u0627\u0626\u0639\u0629 \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0645\u062a\u0648\u0641\u0631\u0629 \u0641\u064a \u0627\u0644\u0645\u062e\u0632\u0648\u0646\u060c \u0641\u064a \u062d\u064a\u0646 \u0623\u0646 \u0627\u0644\u0633\u0645\u0627\u0643\u0627\u062a \u063a\u064a\u0631 \u0627\u0644\u0645\u0639\u062a\u0627\u062f\u0629\u060c \u0623\u0648 \u0627\u0644\u0645\u0642\u0627\u0637\u0639 \u0627\u0644\u0643\u0628\u064a\u0631\u0629\u060c \u0623\u0648 \u0627\u0644\u0644\u0641\u0627\u0626\u0641 \u0627\u0644\u0636\u064a\u0642\u0629\u060c \u0623\u0648 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0637\u0648\u064a\u0644\u0629\u060c \u0623\u0648 \u0627\u0644\u0634\u0631\u0648\u0637 \u0627\u0644\u062e\u0627\u0635\u0629\u060c \u0623\u0648 \u0627\u0644\u0643\u0645\u064a\u0627\u062a \u0627\u0644\u0635\u063a\u064a\u0631\u0629 \u0642\u062f \u062a\u062a\u0637\u0644\u0628 \u0627\u062a\u0628\u0627\u0639 \u0645\u0633\u0627\u0631 \u0625\u0646\u062a\u0627\u062c\u064a. \u064a\u0631\u062c\u0649 \u062a\u062d\u062f\u064a\u062f \u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u0645\u0634\u0631\u0648\u0639 \u064a\u0645\u0643\u0646\u0647 \u0642\u0628\u0648\u0644 \u0627\u0644\u062d\u062c\u0645 \u0627\u0644\u0642\u064a\u0627\u0633\u064a \u0623\u0645 \u0623\u0646\u0647 \u064a\u062d\u062a\u0627\u062c \u0625\u0644\u0649 \u0623\u0628\u0639\u0627\u062f \u0645\u062d\u062f\u062f\u0629. \u0648\u0647\u0630\u0627 \u064a\u0645\u0646\u0639 \u0623\u0646 \u064a\u062a\u062d\u0648\u0644 \u0627\u0644\u0628\u062f\u064a\u0644 \u0627\u0644\u062a\u062c\u0627\u0631\u064a \u0627\u0644\u0630\u064a \u064a\u062a\u0645 \u0637\u0631\u062d\u0647 \u0641\u064a \u0648\u0642\u062a \u0645\u062a\u0623\u062e\u0631 \u0625\u0644\u0649 \u062a\u063a\u064a\u064a\u0631 \u063a\u064a\u0631 \u0645\u0639\u062a\u0645\u062f \u0641\u064a \u0627\u0644\u062a\u0635\u0645\u064a\u0645.<\/p>\n

\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u0627\u0633\u062a\u0628\u062f\u0627\u0644\u060c \u064a\u062c\u0628 \u062a\u0636\u0645\u064a\u0646 \u0627\u0644\u0631\u0633\u0645 \u0627\u0644\u062d\u0627\u0644\u064a\u060c \u0648\u0639\u0644\u0627\u0645\u0629 \u0627\u0644\u0645\u0639\u062f\u0627\u062a\u060c \u0648\u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u062a\u0627\u0644\u0641\u0629\u060c \u0648\u062a\u0633\u0645\u064a\u0629 \u0627\u0644\u0645\u0648\u0631\u062f \u0627\u0644\u0633\u0627\u0628\u0642\u060c \u0648\u062a\u0627\u0631\u064a\u062e \u0627\u0644\u0648\u0635\u0648\u0644 \u0627\u0644\u0645\u0637\u0644\u0648\u0628. \u0623\u0645\u0627 \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u062c\u062f\u064a\u062f\u0629\u060c \u0641\u064a\u062c\u0628 \u062a\u0636\u0645\u064a\u0646 \u0627\u0644\u062c\u062f\u0648\u0644 \u0627\u0644\u0632\u0645\u0646\u064a \u0644\u0644\u062a\u0635\u0645\u064a\u0645 \u0648\u0627\u0644\u062a\u0627\u0631\u064a\u062e \u0627\u0644\u0630\u064a \u064a\u062c\u0628 \u0623\u0646 \u062a\u0635\u0644 \u0641\u064a\u0647 \u0627\u0644\u0645\u0648\u0627\u062f \u0625\u0644\u0649 \u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629. \u0648\u064a\u0646\u0628\u063a\u064a \u0645\u0646\u0627\u0642\u0634\u0629 \u0627\u0644\u0645\u0647\u0644\u0629 \u0627\u0644\u0632\u0645\u0646\u064a\u0629 \u0643\u0646\u0637\u0627\u0642 \u0645\u0639 \u062a\u0648\u0636\u064a\u062d \u0627\u0644\u0627\u0641\u062a\u0631\u0627\u0636\u0627\u062a\u060c \u0648\u0644\u064a\u0633 \u0643\u0631\u0642\u0645 \u0645\u0646\u0641\u0631\u062f \u062f\u0648\u0646 \u062a\u062d\u062f\u064a\u062f \u0646\u0637\u0627\u0642.<\/p>\n

\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0648\u0648\u062b\u0627\u0626\u0642 \u0627\u0644\u0645\u0634\u062a\u0631\u064a\u0627\u062a<\/h2>\n

\u062a\u0648\u0641\u0631 \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0644\u063a\u0629 \u0645\u0634\u062a\u0631\u0643\u0629 \u0641\u064a \u0645\u062c\u0627\u0644\u0627\u062a \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0621 \u0648\u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0648\u0627\u0644\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0645\u064a\u0643\u0627\u0646\u064a\u0643\u064a\u0629\u060c \u0644\u0643\u0646\u0647\u0627 \u0644\u0627 \u062a\u062d\u0644 \u0645\u062d\u0644 \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u062e\u062f\u0645\u0629. \u064a\u062c\u0628 \u0623\u0646 \u062a\u062a\u0636\u0645\u0646 \u0637\u0644\u0628\u0627\u062a \u062a\u0642\u062f\u064a\u0645 \u0627\u0644\u0639\u0631\u0648\u0636 \u0642\u0627\u0626\u0645\u0629\u064b \u0628\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0633\u0627\u0631\u064a\u0629 \u0645\u0646 ASTM \u0648ASME \u0648EN \u0648DIN \u0648AMS \u0648NACE\u060c \u0628\u0627\u0644\u0625\u0636\u0627\u0641\u0629 \u0625\u0644\u0649 \u0648\u062b\u0627\u0626\u0642 \u0627\u0644\u0645\u0627\u0644\u0643 \u0623\u0648 \u0648\u062b\u0627\u0626\u0642 \u0627\u0644\u0645\u0634\u0631\u0648\u0639\u060c \u0645\u0639 \u062a\u062d\u062f\u064a\u062f \u0631\u0642\u0645 \u0627\u0644\u0645\u0631\u0627\u062c\u0639\u0629 \u0639\u0646\u062f \u0627\u0644\u0627\u0642\u062a\u0636\u0627\u0621. \u0648\u0641\u064a \u062d\u0627\u0644 \u0642\u0628\u0648\u0644 \u0627\u0644\u0645\u0634\u0631\u0648\u0639 \u0644\u062f\u0631\u062c\u0629 \u0645\u0639\u0627\u062f\u0644\u0629 \u0623\u0648 \u0628\u062f\u064a\u0644\u0629\u060c \u064a\u062c\u0628 \u0630\u0643\u0631 \u0645\u0633\u0627\u0631 \u0627\u0644\u0645\u0648\u0627\u0641\u0642\u0629 \u0628\u0634\u0643\u0644 \u0635\u0631\u064a\u062d.<\/p>\n\n\n\n\n\n\n\n\n\n
\u0645\u0646\u0637\u0642\u0629 \u0627\u0644\u0645\u0633\u062a\u0646\u062f\u0627\u062a<\/th>\n\u0645\u062d\u062a\u0648\u0649 \u0646\u0645\u0648\u0630\u062c\u064a<\/th>\n\u0625\u062c\u0631\u0627\u0621\u0627\u062a \u0627\u0644\u0645\u0634\u062a\u0631\u064a<\/th>\n<\/tr>\n<\/thead>\n
\u0645\u0639\u064a\u0627\u0631 \u0627\u0644\u0645\u0646\u062a\u062c<\/td>\n\u0627\u0644\u062f\u0631\u062c\u0629\u060c \u0648\u0631\u0645\u0632 UNS\u060c \u0648\u0627\u0644\u0623\u0628\u0639\u0627\u062f\u060c \u0648\u0627\u0644\u062d\u0627\u0644\u0629\u060c \u0648\u0627\u0644\u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0626\u064a\u060c \u0648\u0627\u0644\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0645\u064a\u0643\u0627\u0646\u064a\u0643\u064a\u0629.<\/td>\n\u064a\u0631\u062c\u0649 \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0639\u064a\u0627\u0631 \u0648\u0627\u0644\u0625\u0635\u062f\u0627\u0631 \u0628\u0627\u0644\u0636\u0628\u0637.<\/td>\n<\/tr>\n
\u0631\u0645\u0632 \u0627\u0644\u062a\u0635\u0645\u064a\u0645<\/td>\n\u0627\u0644\u0636\u063a\u0637\u060c \u0648\u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629\u060c \u0648\u0627\u0644\u0625\u062c\u0647\u0627\u062f \u0627\u0644\u0645\u0633\u0645\u0648\u062d \u0628\u0647\u060c \u0648\u0627\u0644\u062a\u0639\u0628\u060c \u0648\u0639\u0648\u0627\u0645\u0644 \u0627\u0644\u0648\u0635\u0644\u0627\u062a\u060c \u0648\u0642\u0648\u0627\u0639\u062f \u0627\u0644\u0628\u0646\u0627\u0621.<\/td>\n\u062d\u062f\u062f \u0642\u0633\u0645 \u0627\u0644\u0642\u0627\u0646\u0648\u0646 \u0648\u0627\u0644\u0633\u0644\u0637\u0629 \u0627\u0644\u0642\u0636\u0627\u0626\u064a\u0629.<\/td>\n<\/tr>\n
\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u062e\u062f\u0645\u0629<\/td>\n\u062a\u0631\u0643\u064a\u0628\u0629 \u0627\u0644\u0633\u0627\u0626\u0644 \u0623\u0648 \u0627\u0644\u063a\u0627\u0632\u060c \u0648\u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629\u060c \u0648\u0627\u0644\u0636\u063a\u0637\u060c \u0648\u0627\u0644\u0633\u0631\u0639\u0629\u060c \u0648\u0639\u062f\u062f \u0627\u0644\u062f\u0648\u0631\u0627\u062a\u060c \u0648\u0627\u0644\u0639\u0645\u0631 \u0627\u0644\u062a\u0635\u0645\u064a\u0645\u064a.<\/td>\n\u0623\u0631\u0641\u0642 \u0627\u0644\u0645\u063a\u0644\u0641 \u0627\u0644\u062e\u0627\u0635 \u0628\u0627\u0644\u062e\u062f\u0645\u0629 \u0628\u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631.<\/td>\n<\/tr>\n
\u062e\u0637\u0629 \u0627\u0644\u062a\u0635\u0646\u064a\u0639<\/td>\n\u0627\u0644\u0631\u0628\u0637\u060c \u0627\u0644\u062a\u0634\u0643\u064a\u0644\u060c \u0627\u0644\u062f\u0639\u0627\u0645\u0627\u062a\u060c \u0627\u0644\u062a\u0646\u0638\u064a\u0641\u060c \u0645\u062f \u0627\u0644\u062d\u0631\u0627\u0631\u0629\u060c \u0627\u0644\u0634\u0643\u0644 \u0627\u0644\u0633\u0637\u062d\u064a \u0648\u0627\u0644\u0634\u0643\u0644 \u0627\u0644\u0646\u0647\u0627\u0626\u064a.<\/td>\n\u062a\u0623\u0643\u062f \u0645\u0646 \u0623\u0646 \u0627\u0644\u0645\u0627\u062f\u0629 \u0645\u0646\u0627\u0633\u0628\u0629 \u0644\u0644\u0645\u0643\u0648\u0646 \u0627\u0644\u0646\u0647\u0627\u0626\u064a.<\/td>\n<\/tr>\n
\u062c\u062f\u0648\u0644 \u0627\u0644\u0639\u0631\u0648\u0636 \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629<\/td>\n\u0627\u0644\u0643\u0645\u064a\u0629\u060c \u0642\u0637\u0639 \u0627\u0644\u063a\u064a\u0627\u0631\u060c \u0627\u0644\u0648\u062c\u0647\u0629\u060c \u0634\u0631\u0648\u0637 \u0625\u0646\u0643\u0648\u062a\u064a\u0631\u0645\u060c \u062a\u0627\u0631\u064a\u062e \u0627\u0644\u062a\u0633\u0644\u064a\u0645\u060c \u0648\u0645\u062f\u0629 \u0635\u0644\u0627\u062d\u064a\u0629 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631.<\/td>\n\u0642\u0627\u0631\u0646 \u0627\u0644\u0639\u0631\u0648\u0636 \u0639\u0644\u0649 \u0623\u0633\u0627\u0633 \u062a\u062c\u0627\u0631\u064a \u0648\u0627\u062d\u062f.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0625\u0646 \u0648\u062b\u064a\u0642\u0629 \u0627\u0644\u0634\u0631\u0627\u0621 \u0627\u0644\u0623\u0643\u062b\u0631 \u062f\u0642\u0629 \u0647\u064a \u062a\u0644\u0643 \u0627\u0644\u062a\u064a \u062a\u0631\u0628\u0637 \u0628\u064a\u0646 \u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0645\u0648\u0627\u062f \u0648\u0648\u0638\u064a\u0641\u0629 \u0627\u0644\u0645\u0639\u062f\u0627\u062a. \u0641\u0647\u064a \u062a\u062d\u062f\u062f \u0627\u0644\u0645\u062a\u0637\u0644\u0628\u0627\u062a\u060c \u0648\u0623\u0633\u0628\u0627\u0628 \u0627\u0644\u062d\u0627\u062c\u0629 \u0625\u0644\u064a\u0647\u0627\u060c \u0648\u0627\u0644\u0623\u062f\u0644\u0629 \u0627\u0644\u062a\u064a \u0633\u064a\u062a\u0645 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647\u0627 \u0644\u0642\u0628\u0648\u0644 \u0627\u0644\u062a\u0633\u0644\u064a\u0645. \u0648\u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0643\u0648\u0646 \u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631 \u0627\u0644\u0642\u0635\u064a\u0631 \u0648\u0627\u0636\u062d\u064b\u0627 \u0625\u0630\u0627 \u062a\u0636\u0645\u0646 \u0642\u0627\u0626\u0645\u0629 \u0628\u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629\u061b \u0641\u064a \u062d\u064a\u0646 \u0623\u0646 \u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631 \u0627\u0644\u0637\u0648\u064a\u0644 \u0642\u062f \u064a\u0638\u0644 \u063a\u0627\u0645\u0636\u064b\u0627 \u0641\u064a \u062d\u0627\u0644\u0629 \u0639\u062f\u0645 \u0630\u0643\u0631 \u0634\u0631\u0648\u0637 \u0627\u0644\u062e\u062f\u0645\u0629.<\/p>\n

\u0623\u0634\u0643\u0627\u0644 \u0627\u0644\u0623\u0639\u0637\u0627\u0644 \u0627\u0644\u0634\u0627\u0626\u0639\u0629 \u0648\u0643\u064a\u0641\u064a\u0629 \u062a\u062c\u0646\u0628\u0647\u0627<\/h2>\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0641\u0634\u0644 \u0641\u064a \u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u0634\u0631\u0627\u0621 \u0623\u0648 \u0627\u0644\u062a\u0635\u0645\u064a\u0645<\/th>\n\u0645\u0627 \u0627\u0644\u0630\u064a \u0642\u062f \u064a\u062d\u062f\u062b \u0645\u0646 \u0645\u0634\u0627\u0643\u0644<\/th>\n\u062a\u062d\u0643\u0645 \u0623\u0641\u0636\u0644<\/th>\n<\/tr>\n<\/thead>\n
Using the standard as a material recommendation<\/td>\nB622 lists products but does not choose the correct alloy for the process.<\/td>\nSelect grade from the full service envelope.<\/td>\n<\/tr>\n
Ignoring the outside fluid<\/td>\nExternal condensation, insulation moisture or supports can cause attack.<\/td>\nReview inside and outside surfaces.<\/td>\n<\/tr>\n
Comparing nominal wall only<\/td>\nMinimum wall, tolerance and corrosion allowance may differ.<\/td>\nNormalize the wall basis in every quotation.<\/td>\n<\/tr>\n
Leaving cleaning chemistry out<\/td>\nShort cleaning events can control corrosion.<\/td>\nList cleaning concentration, temperature and frequency.<\/td>\n<\/tr>\n
No spare plan<\/td>\nA specialty tube may have a long replacement lead time.<\/td>\nQuote spares and availability early.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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    \n
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  5. \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 \u0627\u0644\u0645\u0639\u0645\u0648\u0644 \u0628\u0647\u0627 \u0645\u0646 ASTM \u0623\u0648 ASME \u0623\u0648 EN \u0623\u0648 DIN \u0623\u0648 AMS \u0623\u0648 NACE \u0623\u0648 \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0645\u0627\u0644\u0643.<\/li>\n
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  11. \u064a\u0631\u062c\u0649 \u062a\u0623\u0643\u064a\u062f \u0627\u0644\u0648\u062c\u0647\u0629\u060c \u0648\u0634\u0631\u0648\u0637 \u0625\u0646\u0643\u0648\u062a\u064a\u0631\u0645\u060c \u0648\u062a\u0627\u0631\u064a\u062e \u0627\u0644\u0648\u0635\u0648\u0644 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u060c \u0648\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u062a\u0639\u0628\u0626\u0629 \u0648\u0627\u0644\u062a\u063a\u0644\u064a\u0641 \u0648\u0627\u0644\u0648\u0633\u0645.<\/li>\n
  12. \u064a\u0631\u062c\u0649 \u0625\u0631\u0633\u0627\u0644 \u0627\u0644\u0631\u0633\u0648\u0645\u0627\u062a \u0623\u0648 \u0623\u0648\u0631\u0627\u0642 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0639\u0646\u062f\u0645\u0627 \u062a\u0643\u0648\u0646 \u0627\u0644\u0634\u0643\u0644 \u0627\u0644\u0647\u0646\u062f\u0633\u064a \u0623\u0648 \u0627\u0644\u0645\u0642\u0627\u0633\u0627\u062a \u0623\u0648 \u062a\u062e\u0637\u064a\u0637 \u0627\u0644\u0645\u0644\u0641\u0627\u062a \u0623\u0648 \u0648\u0635\u0644\u0627\u062a \u0635\u0641\u0627\u0626\u062d \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0630\u0627\u062a \u0623\u0647\u0645\u064a\u0629.<\/li>\n<\/ol>\n

    \u0628\u0645\u062c\u0631\u062f \u0627\u0633\u062a\u0644\u0627\u0645 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631\u060c \u0642\u0645 \u0628\u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0628\u0646\u0648\u062f \u0627\u0644\u0641\u0646\u064a\u0629 \u0642\u0628\u0644 \u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0623\u0633\u0639\u0627\u0631. \u062a\u0623\u0643\u062f \u0645\u0646 \u0623\u0646 \u062c\u0645\u064a\u0639 \u0627\u0644\u0645\u0648\u0631\u062f\u064a\u0646 \u0642\u062f \u0642\u062f\u0645\u0648\u0627 \u0639\u0631\u0648\u0636\u064b\u0627 \u062a\u062a\u0636\u0645\u0646 \u0646\u0641\u0633 \u0627\u0644\u0633\u0628\u064a\u0643\u0629 \u0648\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0648\u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0648\u0627\u0644\u062d\u0627\u0644\u0629 \u0648\u0627\u0644\u0643\u0645\u064a\u0629 \u0648\u0634\u0631\u0648\u0637 \u0627\u0644\u062a\u0633\u0644\u064a\u0645. \u0627\u062d\u0631\u0635 \u0639\u0644\u0649 \u0625\u0628\u0642\u0627\u0621 \u0627\u0644\u062e\u064a\u0627\u0631\u0627\u062a \u0627\u0644\u0628\u062f\u064a\u0644\u0629 \u0645\u062a\u0627\u062d\u0629 \u062d\u062a\u0649 \u064a\u062a\u0645\u0643\u0646 \u0641\u0631\u064a\u0642 \u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0645\u0646 \u0627\u0644\u0645\u0648\u0627\u0641\u0642\u0629 \u0639\u0644\u064a\u0647\u0627 \u0623\u0648 \u0631\u0641\u0636\u0647\u0627 \u0628\u0639\u062f \u062f\u0631\u0627\u0633\u0629 \u0645\u062a\u0623\u0646\u064a\u0629.<\/p>\n

    \u0645\u0644\u0627\u062d\u0638\u0627\u062a \u062a\u062e\u0637\u064a\u0637 \u0627\u0644\u0645\u0634\u0631\u0648\u0639 \u0642\u0628\u0644 \u0627\u0644\u0625\u0635\u062f\u0627\u0631<\/h2>\n

    \u064a\u0646\u0628\u063a\u064a \u062a\u062c\u0645\u064a\u062f \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0648\u0627\u062f \u0641\u064a \u0627\u0644\u0645\u0631\u062d\u0644\u0629 \u0627\u0644\u062a\u064a \u062a\u0643\u0648\u0646 \u0641\u064a\u0647\u0627 \u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0648\u062a\u062e\u0637\u064a\u0637 \u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0648\u0645\u0633\u0627\u0631 \u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0646\u0627\u0636\u062c\u0629 \u0628\u0645\u0627 \u064a\u0643\u0641\u064a \u0644\u0625\u062c\u0631\u0627\u0621 \u0645\u0642\u0627\u0631\u0646\u0629 \u0645\u062c\u062f\u064a\u0629. \u0641\u0625\u0635\u062f\u0627\u0631 \u0637\u0644\u0628 \u0645\u0639 \u0648\u0635\u0641 \u063a\u064a\u0631 \u0645\u0643\u062a\u0645\u0644 \u0644\u0644\u062e\u062f\u0645\u0629 \u063a\u0627\u0644\u0628\u064b\u0627 \u0645\u0627 \u064a\u0624\u062f\u064a \u0625\u0644\u0649 \u062a\u0644\u0642\u064a \u0639\u062f\u0629 \u0639\u0631\u0648\u0636 \u0623\u0633\u0639\u0627\u0631 \u062a\u0628\u062f\u0648 \u0645\u062a\u0634\u0627\u0628\u0647\u0629\u060c \u0644\u0643\u0646\u0647\u0627 \u062a\u0633\u062a\u0646\u062f \u0625\u0644\u0649 \u0627\u0641\u062a\u0631\u0627\u0636\u0627\u062a \u0645\u062e\u062a\u0644\u0641\u0629. \u0642\u0645 \u0628\u062a\u0633\u062c\u064a\u0644 \u0627\u0644\u062d\u0627\u0644\u0629 \u0627\u0644\u0639\u0627\u062f\u064a\u0629\u060c \u0648\u062d\u0627\u0644\u0629 \u0627\u0644\u062a\u0635\u0645\u064a\u0645\u060c \u0648\u062d\u0627\u0644\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u063a\u064a\u0631 \u0627\u0644\u0639\u0627\u062f\u064a\u0629\u060c \u0648\u0641\u062a\u0631\u0629 \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0627\u0644\u0645\u062a\u0648\u0642\u0639\u0629 \u0641\u064a \u0645\u0643\u0627\u0646 \u0648\u0627\u062d\u062f\u060c \u062b\u0645 \u0627\u0633\u062a\u062e\u062f\u0645 \u0646\u0641\u0633 \u0627\u0644\u0623\u0633\u0627\u0633 \u0647\u0630\u0627 \u0645\u0639 \u0643\u0644 \u0645\u0648\u0631\u062f.<\/p>\n

    \u064a\u062c\u0628 \u0645\u0631\u0627\u0639\u0627\u0629 \u062a\u0633\u0644\u0633\u0644 \u0639\u0645\u0644\u064a\u0627\u062a \u0627\u0644\u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u0644\u0627\u062d\u0642\u0629 \u0623\u062b\u0646\u0627\u0621 \u0645\u0631\u062d\u0644\u0629 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0648\u0627\u062f. \u0641\u0642\u062f \u064a\u062a\u0645 \u062f\u0631\u0641\u0644\u0629 \u0627\u0644\u0623\u0644\u0648\u0627\u062d \u0623\u0648 \u062a\u0634\u0643\u064a\u0644\u0647\u0627\u060c \u0623\u0648 \u0642\u062f \u064a\u062a\u0645 \u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u0642\u0636\u0628\u0627\u0646 \u0622\u0644\u064a\u064b\u0651\u0627 \u0644\u062a\u0635\u0628\u062d \u0642\u0637\u0639\u064b\u0627 \u062f\u0648\u0627\u0631\u0629 \u0623\u0648 \u0645\u0644\u0648\u0644\u0628\u0629\u060c \u0623\u0648 \u0642\u062f \u064a\u062a\u0645 \u062a\u063a\u0630\u064a\u0629 \u0627\u0644\u0644\u0641\u0627\u0626\u0641 \u0628\u0634\u0643\u0644 \u0645\u0633\u062a\u0645\u0631\u060c \u0623\u0648 \u0642\u062f \u064a\u062a\u0645 \u062a\u0648\u0633\u064a\u0639 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0623\u0648 \u062b\u0646\u064a\u0647\u0627 \u0623\u0648 \u0631\u0628\u0637\u0647\u0627 \u0628\u0644\u0648\u062d\u0629 \u0623\u0646\u0627\u0628\u064a\u0628. \u0648\u064a\u0645\u0643\u0646 \u0644\u0643\u0644 \u062e\u0637\u0648\u0629 \u0623\u0646 \u062a\u063a\u064a\u0631 \u0627\u0644\u0634\u0631\u0648\u0637 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629\u060c \u0648\u0627\u0644\u062a\u0641\u0627\u0648\u062a\u0627\u062a \u0627\u0644\u0645\u0633\u0645\u0648\u062d \u0628\u0647\u0627 \u0641\u064a \u0627\u0644\u0623\u0628\u0639\u0627\u062f\u060c \u0648\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0633\u0637\u062d\u060c \u0648\u0645\u0645\u0627\u0631\u0633\u0627\u062a \u0627\u0644\u0645\u0646\u0627\u0648\u0644\u0629 \u0627\u0644\u0645\u0633\u0645\u0648\u062d \u0628\u0647\u0627. \u064a\u0642\u0644\u0644 \u0627\u0644\u062a\u0646\u0633\u064a\u0642 \u0627\u0644\u0645\u0628\u0643\u0631 \u0645\u0646 \u0627\u062d\u062a\u0645\u0627\u0644 \u0623\u0646 \u064a\u0635\u0628\u062d \u0627\u0644\u0645\u0646\u062a\u062c \u0627\u0644\u0645\u0646\u0627\u0633\u0628 \u062a\u0642\u0646\u064a\u064b\u0651\u0627 \u063a\u064a\u0631 \u0642\u0627\u0628\u0644 \u0644\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0644\u062f\u0649 \u0627\u0644\u0645\u0635\u0646\u0650\u0651\u0639.<\/p>\n

    Delivery planning should include the time needed for drawing review, material allocation, production, packing, transport and receiving inspection. A standard size that arrives before the fabrication window may be more valuable than a theoretically optimal size that arrives after a shutdown. Ask for the supplier’s assumptions and identify which dates are firm, which are estimated and which depend on prompt technical approval.<\/p>\n

    \u0648\u0623\u062e\u064a\u0631\u064b\u0627\u060c \u0627\u062d\u062a\u0641\u0638 \u0628\u0633\u062c\u0644 \u0648\u0627\u0636\u062d \u0644\u0644\u0642\u0631\u0627\u0631\u0627\u062a. \u0642\u0645 \u0628\u062a\u062f\u0648\u064a\u0646 \u0627\u0644\u0633\u0628\u064a\u0643\u0629 \u0627\u0644\u0645\u062e\u062a\u0627\u0631\u0629\u060c \u0648\u0627\u0644\u0628\u062f\u0627\u0626\u0644 \u0627\u0644\u0645\u0631\u0641\u0648\u0636\u0629\u060c \u0648\u062d\u062f\u0648\u062f \u0627\u0644\u062e\u062f\u0645\u0629 \u0627\u0644\u0645\u0637\u0628\u0642\u0629\u060c \u0648\u0627\u0644\u0623\u0628\u0639\u0627\u062f\u060c \u0648\u0627\u0644\u0645\u0639\u064a\u0627\u0631\u060c \u0648\u0627\u0644\u0643\u0645\u064a\u0629\u060c \u0648\u0634\u0631\u0648\u0637 \u0627\u0644\u062a\u0633\u0644\u064a\u0645\u060c \u0648\u0627\u0644\u0634\u062e\u0635 \u0627\u0644\u0630\u064a \u0648\u0627\u0641\u0642 \u0639\u0644\u0649 \u0627\u0644\u0627\u0646\u062d\u0631\u0627\u0641 \u0627\u0644\u0641\u0646\u064a. \u064a\u0633\u0627\u0639\u062f \u0647\u0630\u0627 \u0627\u0644\u0633\u062c\u0644 \u0641\u0631\u0642 \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0639\u0644\u0649 \u0627\u0633\u062a\u0628\u062f\u0627\u0644 \u0627\u0644\u0645\u0648\u0627\u062f \u0628\u0637\u0631\u064a\u0642\u0629 \u0645\u062a\u0633\u0642\u0629\u060c \u0648\u064a\u0648\u0641\u0631 \u0644\u0644\u0645\u0634\u0631\u0648\u0639 \u0627\u0644\u062a\u0627\u0644\u064a \u0646\u0642\u0637\u0629 \u0627\u0646\u0637\u0644\u0627\u0642 \u0645\u0648\u062b\u0648\u0642\u0629\u060c \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0625\u062c\u0628\u0627\u0631 \u0627\u0644\u0645\u0647\u0646\u062f\u0633\u064a\u0646 \u0639\u0644\u0649 \u0625\u0639\u0627\u062f\u0629 \u0628\u0646\u0627\u0621 \u0627\u0644\u0642\u0631\u0627\u0631 \u0627\u0644\u0623\u0635\u0644\u064a \u0645\u0646 \u0631\u0633\u0627\u0626\u0644 \u0627\u0644\u0628\u0631\u064a\u062f \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a \u0627\u0644\u0645\u062a\u0646\u0627\u062b\u0631\u0629.<\/p>\n

    \u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0645\u062a\u062f\u0627\u0648\u0644\u0629<\/h2>\n

    What is ASTM B622 used for?<\/h3>\n

    It is used for listed seamless nickel and nickel-cobalt alloy pipe and tube products. The exact grade, dimensions, condition and project code still need to be stated.<\/p>\n

    Which alloy is best for chemical plants?<\/h3>\n

    There is no universal best grade. C-276, C-22, Alloy 59, Incoloy 825, Inconel 625 and pure-nickel grades fit different chemistry and temperature windows.<\/p>\n

    Can B622 tube be used in a pressure vessel?<\/h3>\n

    It can be used in eligible piping, coil or heat-exchanger applications when the design code, material standard, grade, wall and joint design support it.<\/p>\n

    What dimensions should be included in a B622 RFQ?<\/h3>\n

    Provide OD, nominal or minimum wall, length, quantity, straightness, ovality, condition, service, destination and required arrival date.<\/p>\n

    Should a B622 tube quote include alternatives?<\/h3>\n

    Yes, but alternatives should be listed separately with the grade, standard, dimensions, technical deviations, delivery and price basis clearly identified.<\/p>\n

    Can 28Nickel supply B622 tube?<\/h3>\n

    Yes. Send the grade, UNS, dimensions, quantity, service chemistry, standard, destination and schedule for a comparable quotation.<\/p>\n

    \u0627\u0644\u0648\u0638\u064a\u0641\u0629 \u0627\u0644\u0646\u0647\u0627\u0626\u064a\u0629 \u0641\u064a \u0645\u062c\u0627\u0644 \u0627\u0644\u0645\u0634\u062a\u0631\u064a\u0627\u062a<\/h2>\n

    For nickel alloy tube ASTM B622 for chemical plants, the correct material decision connects the alloy, product form, dimensions, service envelope, standards, quantity and delivery schedule.<\/p>\n

    \u064a\u064f\u0639\u062f \u0637\u0644\u0628 \u0639\u0631\u0636 \u0627\u0644\u0623\u0633\u0639\u0627\u0631 \u0627\u0644\u0623\u0643\u062b\u0631 \u0641\u0627\u0626\u062f\u0629 \u0647\u0648 \u0627\u0644\u0630\u064a \u064a\u062c\u0645\u0639 \u0628\u064a\u0646 \u0646\u0648\u0639 \u0627\u0644\u0645\u0627\u062f\u0629\u060c \u0648\u0627\u0644\u0633\u0628\u0627\u0626\u0643\u060c \u0648\u0627\u0644\u0623\u0628\u0639\u0627\u062f\u060c \u0648\u0646\u0637\u0627\u0642 \u0627\u0644\u062e\u062f\u0645\u0629\u060c \u0648\u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631\u060c \u0648\u0627\u0644\u0643\u0645\u064a\u0629\u060c \u0648\u0627\u0644\u0648\u062c\u0647\u0629\u060c \u0648\u0627\u0644\u062c\u062f\u0648\u0644 \u0627\u0644\u0632\u0645\u0646\u064a. \u0648\u062a\u062a\u064a\u062d \u0647\u0630\u0647 \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0644\u0634\u0631\u0643\u0629 28Nickel \u0645\u0631\u0627\u062c\u0639\u0629 \u0627\u0644\u062a\u0648\u0627\u0641\u0631\u060c \u0648\u0645\u0633\u0627\u0631 \u0627\u0644\u0625\u0646\u062a\u0627\u062c\u060c \u0648\u0627\u0644\u0627\u0641\u062a\u0631\u0627\u0636\u0627\u062a \u0627\u0644\u0641\u0646\u064a\u0629\u060c \u0648\u0627\u0644\u062e\u064a\u0627\u0631\u0627\u062a \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629 \u0642\u0628\u0644 \u0625\u0639\u062f\u0627\u062f \u0627\u0644\u0639\u0631\u0636.<\/p>\n

    \u0627\u0637\u0644\u0628 \u0639\u0631\u0636 \u0623\u0633\u0639\u0627\u0631 \u0645\u0646 28Nickel<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

    A chemical-plant guide to nickel alloy tube ASTM B622, covering suitable service zones, alloy families, pressure, dimensions, heat exchangers, process lines and supplier comparison.<\/p>","protected":false},"author":1,"featured_media":4815,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[338,88,234,339],"class_list":["post-4814","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-industrial-materials","tag-nickel-alloy","tag-nickel-alloy-tube","tag-rfq-guide"],"_links":{"self":[{"href":"https:\/\/www.nickelcasting.com\/ar\/wp-json\/wp\/v2\/posts\/4814","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nickelcasting.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nickelcasting.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ar\/wp-json\/wp\/v2\/comments?post=4814"}],"version-history":[{"count":1,"href":"https:\/\/www.nickelcasting.com\/ar\/wp-json\/wp\/v2\/posts\/4814\/revisions"}],"predecessor-version":[{"id":4816,"href":"https:\/\/www.nickelcasting.com\/ar\/wp-json\/wp\/v2\/posts\/4814\/revisions\/4816"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ar\/wp-json\/wp\/v2\/media\/4815"}],"wp:attachment":[{"href":"https:\/\/www.nickelcasting.com\/ar\/wp-json\/wp\/v2\/media?parent=4814"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ar\/wp-json\/wp\/v2\/categories?post=4814"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ar\/wp-json\/wp\/v2\/tags?post=4814"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}