{"id":4811,"date":"2026-08-05T15:17:41","date_gmt":"2026-08-05T07:17:41","guid":{"rendered":"https:\/\/www.nickelcasting.com\/nickel-alloy-plate-for-sulfuric-acid-tanks\/"},"modified":"2026-08-05T15:17:42","modified_gmt":"2026-08-05T07:17:42","slug":"nickel-alloy-plate-for-sulfuric-acid-tanks","status":"publish","type":"post","link":"https:\/\/www.nickelcasting.com\/ja\/nickel-alloy-plate-for-sulfuric-acid-tanks\/","title":{"rendered":"\u786b\u9178\u30bf\u30f3\u30af\u7528\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u677f\uff1a\u30b0\u30ec\u30fc\u30c9\u304a\u3088\u3073\u8a2d\u8a08\u30ac\u30a4\u30c9"},"content":{"rendered":"
\"\u786b\u9178\u30bf\u30f3\u30af\u7528\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u677f\uff1a\u30b0\u30ec\u30fc\u30c9\u304a\u3088\u3073\u8a2d\u8a08\u30ac\u30a4\u30c9\"<\/figure>\n

\u300c\u300d\u306e\u691c\u7d22 nickel alloy plate for sulfuric acid tanks<\/strong> usually starts when a carbon steel or stainless tank has reached an unacceptable corrosion rate, or when a new project needs a shell material with a defined service margin. The phrase sounds specific, but sulfuric acid service changes dramatically with concentration, temperature, velocity, aeration, impurities, dilution points, and the presence of oxidizing contaminants. A plate that performs well in concentrated acid may not be the best choice in a hot dilute zone.<\/p>\n

The practical material decision is therefore a combination of alloy chemistry, tank geometry, operating envelope, product standard, thickness, joining plan, and maintenance strategy. Commercially pure Nickel 200 or Nickel 201 may be attractive in selected caustic or reducing conditions, while Alloy 20, Incoloy 825, Hastelloy C-276, Hastelloy C-22, Alloy 59, or Inconel 625 may be considered when oxidizing species, chlorides, wet gas, or mixed acids increase the corrosion risk.<\/p>\n

This guide is written for chemical plant engineers, tank fabricators, EPC procurement teams, maintenance managers, and international buyers. It explains how to turn the search term into a comparable material request and how to avoid choosing a grade from a generic corrosion table without checking the actual acid concentration and temperature profile.<\/p>\n

\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u898b\u7a4d\u3082\u308a\u306b\u3064\u3044\u3066\u306f\u300128Nickel\u307e\u3067\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044<\/a> \u5408\u91d1\u307e\u305f\u306f\u5019\u88dc\u3068\u306a\u308b\u30b0\u30ec\u30fc\u30c9\u3001\u88fd\u54c1\u5f62\u614b\u3001\u5bf8\u6cd5\u3001\u6570\u91cf\u3001\u4f7f\u7528\u6761\u4ef6\u3001\u4ed5\u5411\u5730\u3001\u304a\u3088\u3073\u7d0d\u671f\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n

nickel alloy plate for sulfuric acid tanks: The Fast Selection Decision<\/h2>\n

\u8fc5\u901f\u304b\u3064\u78ba\u5b9f\u306a\u5224\u65ad\u3092\u4e0b\u3059\u306b\u306f\u3001\u307e\u305a\u7528\u9014\u304b\u3089\u691c\u8a0e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30cb\u30c3\u30b1\u30eb\u542b\u6709\u91cf\u304c\u591a\u3044\u3068\u3044\u3046\u7406\u7531\u3084\u3001\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306b\u5728\u5eab\u304c\u3042\u308b\u304b\u3089\u3068\u3044\u3046\u7406\u7531\u3060\u3051\u3067\u3001\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u88fd\u54c1\u3092\u9078\u5b9a\u3057\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002\u8981\u6c42\u3055\u308c\u308b\u5f62\u72b6\u3001\u30b0\u30ec\u30fc\u30c9\u3001\u5bf8\u6cd5\u3001\u304a\u3088\u3073\u4f7f\u7528\u6761\u4ef6\u304c\u3001\u4e92\u3044\u306b\u8abf\u548c\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u8a73\u7d30\u306a\u8a2d\u8a08\u691c\u8a0e\u3092\u884c\u3046\u524d\u306b\u3001\u4ee5\u4e0b\u306e\u8868\u3092\u9078\u5b9a\u306e\u76ee\u5b89\u3068\u3057\u3066\u6d3b\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n\n\n\n\n\n\n
\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u95a2\u3059\u308b\u8cea\u554f<\/th>\n\u5b9f\u8df5\u7684\u306a\u51fa\u767a\u70b9<\/th>\n\u78ba\u8a8d\u3059\u3079\u304d\u4e8b\u9805<\/th>\n<\/tr>\n<\/thead>\n
Reducing sulfuric acid with limited oxidants<\/td>\nCommercially pure nickel grades may be evaluated where the chemistry and temperature are inside the qualified envelope.<\/td>\nConfirm concentration, impurities, velocity and dilution conditions before selecting a plate grade.<\/td>\n<\/tr>\n
Mixed acid or oxidizing contamination<\/td>\nAlloy 20, Incoloy 825, Hastelloy C-22, C-276 or Alloy 59 may offer a wider corrosion margin.<\/td>\nUse an alloy comparison based on the actual contaminants rather than sulfuric acid alone.<\/td>\n<\/tr>\n
Hot tank shell or roof zone<\/td>\nHigher alloy content and a conservative thickness allowance may be justified.<\/td>\nSeparate hot liquid, vapor, splash and dilution zones in the design review.<\/td>\n<\/tr>\n
Abrasion or solids in suspension<\/td>\nThe corrosion alloy still needs a mechanical and erosion review.<\/td>\nCheck flow velocity, impingement, agitator location and clean-out practice.<\/td>\n<\/tr>\n
\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u9593\u9694\u304c\u9577\u3044<\/td>\nA more resistant grade can reduce unplanned shutdown risk.<\/td>\nCompare total installed cost, not only plate price per kilogram.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u3053\u306e\u8868\u306f\u3001\u6700\u521d\u306e\u898b\u7a4d\u4f9d\u983c\uff08RFQ\uff09\u3092\u6539\u5584\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3042\u308a\u3001\u6280\u8853\u627f\u8a8d\u306b\u4ee3\u308f\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u6e29\u5ea6\u3001\u5869\u5316\u7269\u6fc3\u5ea6\u3001\u9178\u6fc3\u5ea6\u3001\u5727\u529b\u30b5\u30a4\u30af\u30eb\u3001\u6d41\u901f\u3001\u3042\u308b\u3044\u306f\u63a5\u89e6\u3059\u308b\u91d1\u5c5e\u306b\u308f\u305a\u304b\u306a\u9055\u3044\u304c\u3042\u308b\u3060\u3051\u3067\u3001\u6750\u6599\u306e\u9078\u5b9a\u304c\u5225\u306e\u5408\u91d1\u30d5\u30a1\u30df\u30ea\u30fc\u306b\u5909\u66f4\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u6700\u7d42\u7684\u306a\u898b\u7a4d\u3082\u308a\u3092\u4f9d\u983c\u3059\u308b\u524d\u306b\u3001\u60f3\u5b9a\u3057\u5f97\u308b\u6700\u60aa\u306e\u6761\u4ef6\u3068\u3001\u6545\u969c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306e\u5f71\u97ff\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n

\u305d\u306e\u691c\u7d22\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u672c\u5f53\u306b\u610f\u5473\u3059\u308b\u3053\u3068<\/h2>\n

Nickel alloy plate is not one material category with one universal sulfuric acid rating. Nickel, chromium, molybdenum, copper, iron and stabilizing additions change the balance between reducing-acid resistance, oxidizing-acid resistance, pitting resistance, weld-zone behavior and high-temperature strength. The same nominal acid concentration can produce different results when air, ferric ions, chlorides, fluorides, organic compounds or process residues are present.<\/p>\n

Tank designers should define the liquid composition at normal operation, start-up, shutdown, cleaning and upset conditions. A dilution line can create a short hot zone where water and concentrated acid mix. A vent or scrubber can create a wet vapor zone that is more aggressive than the bulk liquid. The correct plate selection accounts for those local conditions instead of applying one grade to every part of the tank without review.<\/p>\n

\u5546\u53d6\u5f15\u306b\u304a\u3044\u3066\u3001\u8cb7\u3044\u624b\u306f\u3057\u3070\u3057\u3070\u3001\u5728\u5eab\u54c1\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u7528\u306e\u30d7\u30ec\u30fc\u30c8\u3084\u30d0\u30fc\u3001\u9023\u7d9a\u751f\u7523\u30e9\u30a4\u30f3\u7528\u306e\u30b3\u30a4\u30eb\u3001\u71b1\u4ea4\u63db\u5668\u7528\u306e\u30c1\u30e5\u30fc\u30d6\u3001\u3042\u308b\u3044\u306f\u4ea4\u63db\u7528\u90e8\u54c1\u306a\u3069\u3001\u3044\u304f\u3064\u304b\u306e\u7570\u306a\u308b\u30cb\u30fc\u30ba\u30921\u3064\u306e\u30d5\u30ec\u30fc\u30ba\u3067\u8868\u73fe\u3059\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002 \u554f\u3044\u5408\u308f\u305b\u306e\u969b\u306b\u3001\u6a5f\u5668\u306e\u578b\u756a\u3001\u4f5c\u52d5\u6d41\u4f53\u3001\u6e29\u5ea6\u3001\u5727\u529b\u3001\u5bf8\u6cd5\u3001\u6570\u91cf\u3001\u304a\u3088\u3073\u914d\u9001\u5148\u304c\u660e\u8a18\u3055\u308c\u3066\u3044\u308c\u3070\u3001\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306f\u3088\u308a\u8fc5\u901f\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u305d\u306e\u60c5\u5831\u304c\u3042\u308c\u3070\u3001\u5404\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u304b\u3089\u306e\u898b\u7a4d\u3082\u308a\u3092\u6bd4\u8f03\u691c\u8a0e\u3059\u308b\u3053\u3068\u3082\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n

\u7b49\u7d1a\u65cf\u3068\u6750\u6599\u9069\u5408\u6027<\/h2>\n

\u4ee5\u4e0b\u306e\u30b0\u30ec\u30fc\u30c9\u306f\u5019\u88dc\u3068\u306a\u308b\u3082\u306e\u306e\u4e00\u89a7\u3067\u3042\u308a\u3001\u81ea\u52d5\u7684\u306b\u627f\u8a8d\u3055\u308c\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u306e\u540d\u79f0\u306f\u3001\u7570\u306a\u308b\u88fd\u54c1\u5f62\u614b\u3084\u898f\u683c\u3067\u5171\u901a\u3057\u3066\u4f7f\u7528\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u3001\u540c\u3058\u5546\u54c1\u540d\u3067\u3082\u8907\u6570\u306eUNS\u756a\u53f7\u3084\u88fd\u9020\u5143\u53c2\u7167\u756a\u53f7\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u3044\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u3054\u6ce8\u6587\u306e\u524d\u306b\u3001\u73fe\u884c\u306e\u4ed5\u69d8\u3001\u88fd\u54c1\u5f62\u614b\u3001\u72b6\u614b\u3001\u5316\u5b66\u6210\u5206\u3001\u6a5f\u68b0\u7684\u8981\u4ef6\u3001\u304a\u3088\u3073\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u53d7\u5165\u57fa\u6e96\u3092\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n\n\n\n\n\n\n
\u7b49\u7d1a\u65cf<\/th>\n\u306a\u305c\u305d\u3046\u8003\u3048\u3089\u308c\u308b\u306e\u304b<\/th>\n\u691c\u8a0e\u306e\u7bc4\u56f2<\/th>\n<\/tr>\n<\/thead>\n
\u30a2\u30ed\u30a420<\/td>\nOften considered for sulfuric acid and mixed-acid equipment when the service requires chromium, nickel, molybdenum and copper together.<\/td>\nVerify temperature, chloride level, weld-zone requirements and the active specification.<\/td>\n<\/tr>\n
\u30a4\u30f3\u30b3\u30ed\u30a4825<\/td>\nUseful candidate for sulfuric, phosphoric and chloride-bearing environments where a broad corrosion balance is needed.<\/td>\nCheck the exact acid concentration, temperature and reducing or oxidizing condition.<\/td>\n<\/tr>\n
\u30cf\u30b9\u30c6\u30ed\u30a4 C-276 \/ C-22<\/td>\nConsidered for severe mixed-acid, wet chlorine, chloride and oxidizing contamination conditions.<\/td>\nHigher material cost should be compared with corrosion margin and outage risk.<\/td>\n<\/tr>\n
\u30a2\u30ed\u30a459<\/td>\nHigh-nickel, chromium-molybdenum material considered for demanding chemical plant service.<\/td>\nConfirm availability in the requested thickness and the governing product standard.<\/td>\n<\/tr>\n
\u30a4\u30f3\u30b3\u30cd\u30eb625<\/td>\nMay fit hot, high-strength, chloride-containing or mechanically demanding components.<\/td>\nDo not assume a high-temperature nickel alloy is automatically best for every acid concentration.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u9ad8\u5408\u91d1\u6750\u6599\u304c\u3001\u5fc5\u305a\u3057\u3082\u6700\u3082\u7d4c\u6e08\u7684\u3067\u3042\u308b\u3068\u304b\u3001\u6280\u8853\u7684\u306b\u6b63\u3057\u3044\u9078\u629e\u3067\u3042\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u5b9f\u8a3c\u6e08\u307f\u306e\u4f59\u88d5\u5ea6\u3092\u6301\u3064\u4f4e\u5408\u91d1\u6750\u6599\u3092\u9078\u629e\u3059\u308c\u3070\u30b3\u30b9\u30c8\u3092\u524a\u6e1b\u3067\u304d\u308b\u4e00\u65b9\u3067\u3001\u30a2\u30af\u30bb\u30b9\u304c\u56f0\u96e3\u306a\u5834\u5408\u3001\u6545\u969c\u306b\u3088\u3063\u3066\u88fd\u54c1\u30b9\u30c8\u30ea\u30fc\u30e0\u304c\u6c5a\u67d3\u3055\u308c\u308b\u6050\u308c\u304c\u3042\u308b\u5834\u5408\u3001\u3042\u308b\u3044\u306f\u4ea4\u63db\u306b\u5927\u898f\u6a21\u306a\u505c\u6b62\u3092\u8981\u3059\u308b\u5834\u5408\u306a\u3069\u306b\u306f\u3001\u9ad8\u5408\u91d1\u6750\u6599\u306e\u63a1\u7528\u304c\u6b63\u5f53\u5316\u3055\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002 \u610f\u601d\u6c7a\u5b9a\u306e\u691c\u8a0e\u8cc7\u6599\u306b\u304a\u3044\u3066\u306f\u3001\u6750\u6599\u4fa1\u683c\u3068\u4e26\u3093\u3067\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u30b3\u30b9\u30c8\u3082\u8003\u616e\u306b\u5165\u308c\u308b\u3079\u304d\u3067\u3042\u308b\u3002.<\/p>\n

\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3044\u30662\u3064\u306e\u30b0\u30ec\u30fc\u30c9\u3092\u6bd4\u8f03\u3059\u308b\u969b\u306f\u3001\u3059\u3079\u3066\u306e\u5019\u88dc\u54c1\u306b\u3064\u3044\u3066\u540c\u4e00\u306e\u57fa\u6e96\uff08\u540c\u4e00\u306e\u6e29\u5ea6\u7bc4\u56f2\u3001\u540c\u4e00\u306e\u6fc3\u5ea6\u307e\u305f\u306f\u30ac\u30b9\u7d44\u6210\u3001\u540c\u4e00\u306e\u88fd\u54c1\u5f62\u614b\u3001\u540c\u4e00\u306e\u539a\u3055\u307e\u305f\u306f\u76f4\u5f84\u3001\u540c\u4e00\u306e\u8a2d\u8a08\u5bff\u547d\u3001\u304a\u3088\u3073\u540c\u4e00\u306e\u88fd\u9020\u6761\u4ef6\uff09\u3092\u7528\u3044\u308b\u3053\u3068\u3002\u3042\u308b\u6761\u4ef6\u306b\u304a\u3051\u308b\u5b9f\u9a13\u5ba4\u3067\u306e\u7279\u6027\u66f2\u7dda\u3068\u3001\u5225\u306e\u6761\u4ef6\u306b\u304a\u3051\u308b\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306e\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u3092\u6df7\u540c\u3057\u3001\u305d\u306e\u7d50\u679c\u3092\u300c\u76f4\u63a5\u6bd4\u8f03\u300d\u3068\u547c\u3076\u3053\u3068\u306f\u907f\u3051\u308b\u3053\u3068\u3002.<\/p>\n

\u8a2d\u8a08\u3092\u898f\u5b9a\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u6761\u4ef6<\/h2>\n

Concentration is the first variable to record, but it is not sufficient by itself. Sulfuric acid can become more aggressive in dilute ranges, at elevated temperature, or where the liquid is aerated. A tank schedule should state the normal concentration and the minimum and maximum values expected after water addition, evaporation, recycle, or cleaning.<\/p>\n

Temperature should be recorded as a map rather than one number. The lower shell may be near ambient while an inlet nozzle, heating coil, recirculation return, or vapor space is much hotter. Local heat flux can change the corrosion mechanism and the stress state of the plate. Put the design temperature and the local hot-spot assumptions into the RFQ.<\/p>\n

Impurities can control the grade choice. Chloride, fluoride, ferric ions, dissolved oxygen, nitric acid, hydrofluoric acid, organic acids, and process catalysts can change the corrosion mode. If the tank receives recycled acid, list the expected impurity range and not only the nominal product specification.<\/p>\n

Velocity and deposits also matter. A quiet tank bottom may suffer under-deposit attack, while an agitator or pump return can create erosion-corrosion. Review nozzle direction, impeller clearance, solids, clean-out tools, and the possibility of acid stratification before finalizing plate thickness and grade.<\/p>\n

\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30de\u30c3\u30d7<\/h2>\n

Tank shells and bottoms<\/h3>\n

The shell and bottom are normally purchased as project plate with a defined nominal thickness, corrosion allowance, weld joint category and support condition. The bottom may require a different allowance from the upper shell because deposits, settlement, thermal gradients and clean-out activities concentrate risk there. A high-alloy plate can be economical when replacement would require removing insulation, piping, agitators or a roof structure.<\/p>\n

For large tanks, compare plate availability, maximum plate width, lifting limits, weld sequence and dimensional stability. A supplier should quote the actual plate size, not just a nominal thickness, because extra longitudinal joints can increase fabrication time and inspection scope.<\/p>\n

Roofs, covers and vapor spaces<\/h3>\n

The roof and vapor space can see acid mist, condensation and wet gas even when the bulk liquid is less aggressive. The grade selected for the roof should be based on the vapor composition, vent rate, scrubber performance and condensation pattern. A roof plate that is acceptable in dry service may fail quickly when acid condensate collects around stiffeners or nozzles.<\/p>\n

Ask the fabricator to identify drainage, low points, stiffener attachments and vapor-zone access. Local design details often control life more than the average plate corrosion rate.<\/p>\n

Dilution and feed zones<\/h3>\n

Acid dilution is a common source of local overheating and accelerated attack. Feed nozzles, mixing tees, spray devices and recirculation returns should be reviewed separately from the main shell. The plate grade may need to be upgraded locally, or a liner or replaceable wear section may be used where the process creates a predictable hot spot.<\/p>\n

State the feed composition, flow rate, mixing energy and expected temperature rise. Without that information, a supplier can only provide a general material suggestion rather than a technically comparable proposal.<\/p>\n

Acid storage and transfer modules<\/h3>\n

Storage tanks, day tanks, transfer vessels and neutralization modules can have different duty cycles. A storage tank may see long static periods, while a transfer vessel sees high velocity, pump start-stop cycles and frequent water contamination. The same grade and thickness should not be assumed for every vessel in the process block.<\/p>\n

Build the RFQ around the actual equipment tag, service description, dimensions and quantity. This lets the supplier identify whether the request is stock material, project production or a grade alternative.<\/p>\n

\u6280\u8853\u30fb\u8a2d\u8a08\u306b\u95a2\u3059\u308b\u6ce8\u610f\u4e8b\u9805<\/h2>\n

Plate thickness should be derived from the pressure or vacuum design, structural loads, corrosion allowance and fabrication tolerance. Nickel alloy plate is expensive, so an oversized allowance can create unnecessary cost, while an undersized allowance can shorten the maintenance interval. Use the governing vessel code and make the minimum permitted thickness explicit.<\/p>\n

Welded tank construction creates a heat-affected zone, residual stress and a surface condition that may differ from the parent plate. The material selection should be paired with a qualified welding procedure, filler-metal choice, post-weld cleaning plan and a strategy for verifying the weld zone. A plate that is corrosion-resistant in the mill condition still needs a controlled fabrication route.<\/p>\n

Thermal cycling can be as important as steady-state corrosion. Start-up with water, acid charging, steam heating, emergency quench, and shutdown can create repeated expansion and contraction. Review nozzle flexibility, roof attachments, support skirts, internal coils and insulation details so that the plate is not forced to carry avoidable thermal stress.<\/p>\n

Surface condition should match the service and the fabricator’s process. Mill scale, embedded iron, weld spatter, grinding residue, and acid-cleaning chemicals can create local corrosion cells. The purchase specification should state the required surface and cleanliness without treating a generic finish name as a complete corrosion-control plan.<\/p>\n

\u5bf8\u6cd5\u3001\u4f9b\u7d66\u72b6\u6cc1\u3001\u304a\u3088\u3073\u5165\u624b\u53ef\u80fd\u6027<\/h2>\n

\u88fd\u54c1\u306e\u5f62\u72b6\u306f\u3001\u5b8c\u6210\u54c1\u306e\u5bf8\u6cd5\u3092\u898f\u5b9a\u3059\u308b\u5bf8\u6cd5\u3092\u7528\u3044\u3066\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u677f\u6750\u306e\u5834\u5408\u3001\u539a\u3055\u3001\u5e45\u3001\u9577\u3055\u3001\u5e73\u5766\u5ea6\u306a\u3069\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u68d2\u6750\u306e\u5834\u5408\u3001\u76f4\u5f84\u3001\u65ad\u9762\u5f62\u72b6\u3001\u9577\u3055\u3001\u771f\u76f4\u5ea6\u3001\u304a\u3088\u3073\u4f59\u88d5\u91cf\u306a\u3069\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002 \u30b3\u30a4\u30eb\u306e\u5834\u5408\u306f\u3001\u539a\u3055\u3001\u5e45\u3001\u30b3\u30a4\u30eb\u5185\u5f84\u3001\u30b3\u30a4\u30eb\u91cd\u91cf\u306a\u3069\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u7ba1\u306e\u5834\u5408\u306f\u3001\u5916\u5f84\u3001\u516c\u79f0\u8089\u539a\u307e\u305f\u306f\u6700\u5c0f\u8089\u539a\u3001\u9577\u3055\u3001\u6955\u5186\u5ea6\u3001\u771f\u76f4\u5ea6\u306a\u3069\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306f\u3001\u30ad\u30fc\u30ef\u30fc\u30c9\u306e\u307f\u304b\u3089\u3053\u308c\u3089\u306e\u5024\u3092\u63a8\u6e2c\u3059\u308b\u5fc5\u8981\u304c\u3042\u3063\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n\n\n\n\n\n\n
\u898b\u7a4d\u4f9d\u983c\uff08RFQ\uff09\u30a8\u30ea\u30a2<\/th>\n\u8a18\u8f09\u3059\u3079\u304d\u60c5\u5831<\/th>\n\u306a\u305c\u305d\u308c\u304c\u91cd\u8981\u306a\u306e\u304b<\/th>\n<\/tr>\n<\/thead>\n
\u7d20\u6750\u306e\u30a2\u30a4\u30c7\u30f3\u30c6\u30a3\u30c6\u30a3<\/td>\nAlloy name, UNS designation, applicable ASTM or ASME product standard, revision and approved alternatives.<\/td>\n<\/tr>\n
\u30d7\u30ec\u30fc\u30c8\u306e\u5bf8\u6cd5<\/td>\nThickness, width, length, maximum piece weight, flatness, edge condition and dimensional tolerance.<\/td>\n<\/tr>\n
Service data<\/td>\nAcid concentration range, temperature range, impurities, velocity, pressure or vacuum and design life.<\/td>\n<\/tr>\n
\u88fd\u9020<\/td>\nTank diameter, shell course plan, weld process, nozzle details, lining strategy and heat input limits.<\/td>\n<\/tr>\n
\u30b3\u30de\u30fc\u30b7\u30e3\u30eb<\/td>\nQuantity, delivery location, Incoterm, required arrival date, stock or production preference and quotation validity.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u5165\u624b\u53ef\u80fd\u6027\u306f\u6280\u8853\u8a08\u753b\u306e\u4e00\u90e8\u3067\u3059\u3002\u6a19\u6e96\u7684\u306a\u5bf8\u6cd5\u3084\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30b0\u30ec\u30fc\u30c9\u306f\u5728\u5eab\u304b\u3089\u5165\u624b\u3067\u304d\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u7279\u6b8a\u306a\u539a\u3055\u3001\u5927\u65ad\u9762\u3001\u5e45\u306e\u72ed\u3044\u30b3\u30a4\u30eb\u3001\u9577\u5c3a\u306e\u30c1\u30e5\u30fc\u30d6\u3001\u7279\u6b8a\u306a\u6761\u4ef6\u3001\u3042\u308b\u3044\u306f\u5c11\u91cf\u306e\u5834\u5408\u306f\u3001\u751f\u7523\u5de5\u7a0b\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u6a19\u6e96\u30b5\u30a4\u30ba\u3067\u5bfe\u5fdc\u53ef\u80fd\u304b\u3001\u305d\u308c\u3068\u3082\u56fa\u5b9a\u5bf8\u6cd5\u304c\u5fc5\u8981\u304b\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5f8c\u306b\u306a\u3063\u3066\u63d0\u6848\u3055\u308c\u305f\u5546\u696d\u7684\u306a\u4ee3\u66ff\u6848\u304c\u3001\u627f\u8a8d\u3055\u308c\u3066\u3044\u306a\u3044\u8a2d\u8a08\u5909\u66f4\u3068\u306a\u308b\u3053\u3068\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n

\u4ea4\u63db\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u5834\u5408\u306f\u3001\u65e2\u5b58\u306e\u56f3\u9762\u3001\u6a5f\u5668\u30bf\u30b0\u3001\u6545\u969c\u3057\u305f\u90e8\u54c1\u3001\u4ee5\u524d\u306e\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u6307\u5b9a\u3001\u304a\u3088\u3073\u5fc5\u8981\u306a\u7d0d\u5165\u65e5\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u65b0\u898f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u5834\u5408\u306f\u3001\u8a2d\u8a08\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u304a\u3088\u3073\u90e8\u54c1\u304c\u88fd\u9020\u696d\u8005\u306b\u5c4a\u304f\u5fc5\u8981\u304c\u3042\u308b\u65e5\u4ed8\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30ea\u30fc\u30c9\u30bf\u30a4\u30e0\u306b\u3064\u3044\u3066\u306f\u3001\u7bc4\u56f2\u3068\u3057\u3066\u3001\u305d\u306e\u524d\u63d0\u6761\u4ef6\u3092\u660e\u8a18\u3057\u305f\u4e0a\u3067\u5354\u8b70\u3059\u3079\u304d\u3067\u3042\u308a\u3001\u7bc4\u56f2\u304c\u4e0d\u660e\u78ba\u306a\u5358\u4e00\u306e\u6570\u5024\u3068\u3057\u3066\u63d0\u793a\u3059\u3079\u304d\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002.<\/p>\n

\u898f\u683c\u304a\u3088\u3073\u8abf\u9054\u95a2\u9023\u6587\u66f8<\/h2>\n

\u898f\u683c\u306f\u3001\u5316\u5b66\u7684\u6027\u8cea\u3001\u5bf8\u6cd5\u3001\u304a\u3088\u3073\u6a5f\u68b0\u7684\u8981\u4ef6\u306b\u95a2\u3059\u308b\u5171\u901a\u306e\u57fa\u6e96\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u30b5\u30fc\u30d3\u30b9\u8a2d\u8a08\u306b\u53d6\u3063\u3066\u4ee3\u308f\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u898b\u7a4d\u4f9d\u983c\u66f8\uff08RFQ\uff09\u306b\u306f\u3001\u9069\u7528\u3055\u308c\u308bASTM\u3001ASME\u3001EN\u3001DIN\u3001AMS\u3001NACE\u306e\u898f\u683c\u3001\u304a\u3088\u3073\u767a\u6ce8\u8005\u307e\u305f\u306f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u6587\u66f8\u3092\u660e\u8a18\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u6539\u8a02\u7248\u3092\u7279\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u304a\u3044\u3066\u540c\u7b49\u54c1\u307e\u305f\u306f\u4ee3\u66ff\u54c1\u304c\u8a8d\u3081\u3089\u308c\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u627f\u8a8d\u30d7\u30ed\u30bb\u30b9\u3092\u660e\u793a\u7684\u306b\u8a18\u8f09\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n\n\n\n\n\n\n
\u6587\u66f8\u30a8\u30ea\u30a2<\/th>\n\u4ee3\u8868\u7684\u306a\u30b3\u30f3\u30c6\u30f3\u30c4<\/th>\n\u8cfc\u5165\u8005\u306e\u884c\u52d5<\/th>\n<\/tr>\n<\/thead>\n
\u88fd\u54c1\u898f\u683c<\/td>\n\u30b0\u30ec\u30fc\u30c9\u3001UNS\u3001\u5bf8\u6cd5\u3001\u72b6\u614b\u3001\u5316\u5b66\u6210\u5206\u304a\u3088\u3073\u6a5f\u68b0\u7684\u7279\u6027\u306b\u95a2\u3059\u308b\u8981\u4ef6\u3002.<\/td>\n\u6b63\u78ba\u306a\u898f\u683c\u304a\u3088\u3073\u6539\u8a02\u7248\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/td>\n<\/tr>\n
\u30c7\u30b6\u30a4\u30f3\u30b3\u30fc\u30c9<\/td>\n\u5727\u529b\u3001\u6e29\u5ea6\u3001\u8a31\u5bb9\u5fdc\u529b\u3001\u75b2\u52b4\u3001\u63a5\u5408\u4fc2\u6570\u304a\u3088\u3073\u65bd\u5de5\u898f\u5247\u3002.<\/td>\n\u8a72\u5f53\u3059\u308b\u6cd5\u898f\u306e\u6761\u9805\u304a\u3088\u3073\u7ba1\u8f44\u533a\u57df\u3092\u7279\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/td>\n<\/tr>\n
\u30b5\u30fc\u30d3\u30b9\u4ed5\u69d8\u66f8<\/td>\n\u6d41\u4f53\u307e\u305f\u306f\u6c17\u4f53\u306e\u7d44\u6210\u3001\u6e29\u5ea6\u3001\u5727\u529b\u3001\u6d41\u901f\u3001\u30b5\u30a4\u30af\u30eb\u6570\u3001\u304a\u3088\u3073\u8a2d\u8a08\u5bff\u547d\u3002.<\/td>\n\u898b\u7a4d\u4f9d\u983c\u66f8\uff08RFQ\uff09\u306b\u30b5\u30fc\u30d3\u30b9\u7528\u5c01\u7b52\u3092\u540c\u5c01\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/td>\n<\/tr>\n
\u88fd\u9020\u8a08\u753b<\/td>\n\u63a5\u5408\u3001\u6210\u5f62\u3001\u652f\u6301\u3001\u6d17\u6d44\u3001\u5165\u71b1\u3001\u8868\u9762\u5f62\u72b6\u304a\u3088\u3073\u6700\u7d42\u5f62\u72b6\u3002.<\/td>\n\u305d\u306e\u6750\u6599\u304c\u5b8c\u6210\u90e8\u54c1\u306b\u9069\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/td>\n<\/tr>\n
\u5546\u696d\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb<\/td>\n\u6570\u91cf\u3001\u4e88\u5099\u54c1\u3001\u4ed5\u5411\u5730\u3001\u30a4\u30f3\u30b3\u30bf\u30fc\u30e0\u30ba\u3001\u7d0d\u671f\u3001\u304a\u3088\u3073\u898b\u7a4d\u6709\u52b9\u671f\u9593\u3002.<\/td>\n\u540c\u4e00\u306e\u5546\u696d\u6761\u4ef6\u306b\u57fa\u3065\u3044\u3066\u5404\u30aa\u30d5\u30a1\u30fc\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u512a\u308c\u305f\u8abf\u9054\u6587\u66f8\u3068\u306f\u3001\u6750\u6599\u306e\u7279\u6027\u3068\u6a5f\u5668\u306e\u6a5f\u80fd\u3092\u7d50\u3073\u3064\u3051\u308b\u3082\u306e\u3067\u3059\u3002\u305d\u3053\u306b\u306f\u3001\u4f55\u304c\u6c42\u3081\u3089\u308c\u3066\u3044\u308b\u304b\u3001\u306a\u305c\u305d\u308c\u304c\u5fc5\u8981\u306a\u306e\u304b\u3001\u305d\u3057\u3066\u53d7\u5165\u691c\u67fb\u306b\u3069\u306e\u3088\u3046\u306a\u8a3c\u62e0\u304c\u7528\u3044\u3089\u308c\u308b\u304b\u304c\u660e\u8a18\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u91cd\u8981\u306a\u5909\u6570\u304c\u5217\u6319\u3055\u308c\u3066\u3044\u308c\u3070\u3001\u7c21\u6f54\u306a\u898b\u7a4d\u4f9d\u983c\u66f8\uff08RFQ\uff09\u3067\u3082\u660e\u78ba\u306a\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001\u4f7f\u7528\u6761\u4ef6\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u306a\u3051\u308c\u3070\u3001\u9577\u6587\u306e\u898b\u7a4d\u4f9d\u983c\u66f8\u3067\u3042\u3063\u3066\u3082\u66d6\u6627\u306a\u307e\u307e\u306b\u306a\u308a\u304b\u306d\u307e\u305b\u3093\u3002.<\/p>\n

\u3088\u304f\u3042\u308b\u6545\u969c\u306e\u539f\u56e0\u3068\u3001\u305d\u306e\u56de\u907f\u65b9\u6cd5<\/h2>\n\n\n\n\n\n\n\n\n\n
\u8cfc\u5165\u307e\u305f\u306f\u8a2d\u8a08\u30d7\u30ed\u30bb\u30b9\u306b\u304a\u3051\u308b\u5931\u6557<\/th>\n\u3069\u306e\u3088\u3046\u306a\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b<\/th>\n\u3088\u308a\u512a\u308c\u305f\u5236\u5fa1<\/th>\n<\/tr>\n<\/thead>\n
Choosing by acid name only<\/td>\nA grade that works in one concentration can be unsuitable in another.<\/td>\nRequire concentration, temperature and impurity ranges before approval.<\/td>\n<\/tr>\n
Ignoring vapor and dilution zones<\/td>\nLocal attack starts where the average liquid chemistry does not represent the real exposure.<\/td>\nMap the tank into liquid, splash, vapor, roof and feed zones.<\/td>\n<\/tr>\n
\u7bc4\u56f2\u3092\u8003\u616e\u305b\u305a\u306b\u4fa1\u683c\u3092\u6bd4\u8f03\u3059\u308b<\/td>\nA cheaper plate may have different thickness, standard, size or delivery basis.<\/td>\nNormalize the full technical and commercial line items.<\/td>\n<\/tr>\n
Assuming nickel content equals corrosion resistance<\/td>\nPure nickel, nickel-chromium and nickel-molybdenum alloys behave differently.<\/td>\nCompare alloy chemistry to the actual corrosion mechanism.<\/td>\n<\/tr>\n
No change-control plan<\/td>\nA small process change can invalidate the original corrosion assumption.<\/td>\nDefine review triggers for concentration, temperature, feed and cleaning changes.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u6750\u6599\u306b\u95a2\u3059\u308b\u554f\u984c\u306e\u591a\u304f\u306f\u3001\u30ab\u30bf\u30ed\u30b0\u4e0a\u306e\u305f\u3063\u305f\u4e00\u3064\u306e\u8aa4\u3063\u305f\u8a18\u8f09\u304c\u539f\u56e0\u3067\u751f\u3058\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u3046\u3057\u305f\u554f\u984c\u306f\u3001\u52d5\u4f5c\u7bc4\u56f2\u304c\u5909\u66f4\u3055\u308c\u305f\u308a\u3001\u88fd\u9020\u5de5\u7a0b\u304c\u898b\u76f4\u3055\u308c\u306a\u304b\u3063\u305f\u308a\u3001\u63a5\u7d9a\u7528\u306e\u91d1\u5c5e\u90e8\u54c1\u304c\u7701\u7565\u3055\u308c\u305f\u308a\u3001\u5bf8\u6cd5\u304c\u63a8\u6e2c\u3055\u308c\u305f\u308a\u3001\u3042\u308b\u3044\u306f\u6280\u8853\u90e8\u9580\u306e\u627f\u8a8d\u3092\u5f97\u305a\u306b\u5e02\u8ca9\u306e\u4ee3\u66ff\u54c1\u304c\u63a1\u7528\u3055\u308c\u305f\u308a\u3057\u305f\u969b\u306b\u767a\u751f\u3057\u307e\u3059\u3002\u901a\u5e38\u3001\u898b\u7a4d\u4f9d\u983c\uff08RFQ\uff09\u306e\u6bb5\u968e\u3067\u7c21\u6f54\u306a\u8a2d\u8a08\u30ec\u30d3\u30e5\u30fc\u3092\u884c\u3046\u65b9\u304c\u3001\u88fd\u9020\u5f8c\u306e\u6750\u6599\u5909\u66f4\u3092\u884c\u3046\u3088\u308a\u3082\u30b3\u30b9\u30c8\u3092\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n

\u3059\u3067\u306b\u6545\u969c\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u6545\u969c\u3057\u305f\u90e8\u54c1\u3001\u904b\u8ee2\u8a18\u9332\u3001\u4f5c\u52d5\u6d41\u4f53\u306e\u4f7f\u7528\u5c65\u6b74\u3001\u5199\u771f\u3001\u5bf8\u6cd5\u3001\u304a\u3088\u3073\u904e\u53bb\u306e\u6587\u66f8\u3092\u4fdd\u5b58\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u7834\u65ad\u9762\u306e\u5916\u89b3\u306e\u307f\u306b\u57fa\u3065\u3044\u3066\u3001\u4ea4\u63db\u7528\u90e8\u54c1\u306e\u30b0\u30ec\u30fc\u30c9\u3092\u6c7a\u5b9a\u3057\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u6839\u672c\u539f\u56e0\u306e\u8abf\u67fb\u3067\u306f\u3001\u8150\u98df\u3001\u904e\u8ca0\u8377\u3001\u75b2\u52b4\u3001\u71b1\u640d\u50b7\u3001\u632f\u52d5\u3001\u8a2d\u7f6e\u30df\u30b9\u3001\u304a\u3088\u3073\u6750\u6599\u306e\u53d6\u308a\u9055\u3048\u3092\u533a\u5225\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n

\u8cfc\u5165\u8005\u5411\u3051\u898b\u7a4d\u4f9d\u983c\uff08RFQ\uff09\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h2>\n

\u30cb\u30c3\u30b1\u30eb\u5408\u91d1\u306e\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306b\u554f\u3044\u5408\u308f\u305b\u3092\u884c\u3046\u524d\u306b\u3001\u4ee5\u4e0b\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u3092\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\uff1a<\/p>\n

    \n
  1. \u6b63\u78ba\u306a\u30ad\u30fc\u30ef\u30fc\u30c9\u30b0\u30ec\u30fc\u30c9\u307e\u305f\u306f\u5019\u88dc\u30b0\u30ec\u30fc\u30c9\u3001UNS\u53c2\u7167\u756a\u53f7\u3001\u304a\u3088\u3073\u88fd\u54c1\u5f62\u614b\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n
  2. \u6a5f\u5668\u540d\u3001\u4f7f\u7528\u6d41\u4f53\u307e\u305f\u306f\u30ac\u30b9\u3001\u901a\u5e38\u6761\u4ef6\u304a\u3088\u3073\u8a2d\u8a08\u6761\u4ef6\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n
  3. \u5bf8\u6cd5\u306f1\u3064\u306e\u5358\u4f4d\u7cfb\u3067\u8868\u8a18\u3057\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u516c\u79f0\u539a\u3055\u307e\u305f\u306f\u6700\u5c0f\u539a\u3055\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n
  4. \u6570\u91cf\u3001\u500b\u6570\u3001\u63a8\u5b9a\u91cd\u91cf\u3001\u4e88\u5099\u90e8\u54c1\u3001\u304a\u3088\u3073\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u7d0d\u54c1\u5148\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n
  5. \u9069\u7528\u3055\u308c\u308bASTM\u3001ASME\u3001EN\u3001DIN\u3001AMS\u3001NACE\u3001\u307e\u305f\u306f\u767a\u6ce8\u8005\u4ed5\u69d8\u3092\u7279\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n
  6. \u6e29\u5ea6\u30b5\u30a4\u30af\u30eb\u3001\u5727\u529b\u30b5\u30a4\u30af\u30eb\u3001\u6d41\u901f\u3001\u5806\u7a4d\u7269\u3001\u6d17\u6d44\u3001\u304a\u3088\u3073\u30a2\u30c3\u30d7\u30bb\u30c3\u30c8\u72b6\u614b\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n
  7. \u7d0d\u54c1\u5f8c\u306e\u63a5\u5408\u3001\u652f\u6301\u3001\u30b7\u30fc\u30eb\u3001\u6210\u5f62\u3001\u307e\u305f\u306f\u8a2d\u7f6e\u306e\u624b\u9806\u3092\u660e\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n
  8. \u4ee3\u66ff\u54c1\u3001\u4ee3\u66ff\u30b0\u30ec\u30fc\u30c9\u3001\u307e\u305f\u306f\u6a19\u6e96\u7248\u306b\u95a2\u3059\u308b\u5236\u9650\u4e8b\u9805\u304c\u3042\u308c\u3070\u3001\u305d\u308c\u3089\u3092\u7279\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n
  9. \u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306b\u5bfe\u3057\u3001\u5728\u5eab\u3001\u6a19\u6e96\u751f\u7523\u54c1\u3001\u304a\u3088\u3073\u7279\u5225\u751f\u7523\u54c1\u306e\u533a\u5206\u3092\u660e\u78ba\u306b\u3059\u308b\u3088\u3046\u4f9d\u983c\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n
  10. \u76f8\u9055\u70b9\u3001\u524d\u63d0\u6761\u4ef6\u3001\u7d0d\u5165\u6761\u4ef6\u3001\u304a\u3088\u3073\u898b\u7a4d\u6709\u52b9\u671f\u9593\u306b\u3064\u3044\u3066\u306f\u3001\u305d\u308c\u305e\u308c\u5225\u884c\u3067\u8a18\u8f09\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n
  11. \u4ed5\u5411\u5730\u3001\u30a4\u30f3\u30b3\u30bf\u30fc\u30e0\u30ba\u3001\u6307\u5b9a\u5230\u7740\u65e5\u3001\u68b1\u5305\u304a\u3088\u3073\u8868\u793a\u306e\u8981\u4ef6\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/li>\n
  12. \u5f62\u72b6\u3001\u5d4c\u5408\u3001\u30b3\u30a4\u30eb\u306e\u914d\u7f6e\u3001\u307e\u305f\u306f\u30c1\u30e5\u30fc\u30d6\u30b7\u30fc\u30c8\u63a5\u5408\u90e8\u304c\u91cd\u8981\u306a\u5834\u5408\u306f\u3001\u56f3\u9762\u3084\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u3092\u304a\u9001\u308a\u304f\u3060\u3055\u3044\u3002.<\/li>\n<\/ol>\n

    \u898b\u7a4d\u66f8\u3092\u53d7\u3051\u53d6\u3063\u305f\u3089\u3001\u4fa1\u683c\u3092\u6bd4\u8f03\u3059\u308b\u524d\u306b\u6280\u8853\u7684\u306a\u9805\u76ee\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3059\u3079\u3066\u306e\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u304c\u3001\u540c\u3058\u5408\u91d1\u3001\u898f\u683c\u3001\u5bf8\u6cd5\u3001\u72b6\u614b\u3001\u6570\u91cf\u3001\u304a\u3088\u3073\u7d0d\u5165\u6761\u4ef6\u3067\u898b\u7a4d\u3082\u308a\u3092\u63d0\u793a\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30c1\u30fc\u30e0\u304c\u614e\u91cd\u306b\u627f\u8a8d\u307e\u305f\u306f\u5374\u4e0b\u3067\u304d\u308b\u3088\u3046\u3001\u4ee3\u66ff\u6848\u3082\u4f75\u305b\u3066\u63d0\u793a\u3057\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n

    \u30ea\u30ea\u30fc\u30b9\u524d\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u8a08\u753b\u306b\u95a2\u3059\u308b\u30e1\u30e2<\/h2>\n

    \u6750\u6599\u306e\u9078\u5b9a\u306f\u3001\u30d7\u30ed\u30bb\u30b9\u30c7\u30fc\u30bf\u3001\u8a2d\u5099\u30ec\u30a4\u30a2\u30a6\u30c8\u3001\u88fd\u9020\u5de5\u7a0b\u304c\u5341\u5206\u306b\u6210\u719f\u3057\u3001\u6709\u610f\u7fa9\u306a\u6bd4\u8f03\u304c\u53ef\u80fd\u3068\u306a\u3063\u305f\u6642\u70b9\u3067\u78ba\u5b9a\u3059\u3079\u304d\u3067\u3059\u3002\u30b5\u30fc\u30d3\u30b9\u5185\u5bb9\u306e\u8aac\u660e\u304c\u672a\u5b8c\u6210\u306e\u72b6\u614b\u3067\u4f9d\u983c\u3092\u51fa\u3059\u3068\u3001\u4e00\u898b\u4f3c\u3066\u3044\u308b\u3082\u306e\u306e\u3001\u5b9f\u969b\u306b\u306f\u7570\u306a\u308b\u524d\u63d0\u306b\u57fa\u3065\u3044\u305f\u8907\u6570\u306e\u898b\u7a4d\u3082\u308a\u304c\u63d0\u51fa\u3055\u308c\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002 \u901a\u5e38\u72b6\u614b\u3001\u8a2d\u8a08\u6761\u4ef6\u3001\u7570\u5e38\u72b6\u614b\u3001\u304a\u3088\u3073\u4e88\u60f3\u3055\u308c\u308b\u4fdd\u5b88\u9593\u9694\u3092\u4e00\u7b87\u6240\u306b\u8a18\u9332\u3057\u3001\u3059\u3079\u3066\u306e\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306b\u5bfe\u3057\u3066\u305d\u306e\u540c\u3058\u57fa\u6e96\u3092\u9069\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n

    \u6750\u6599\u306e\u9078\u5b9a\u6bb5\u968e\u304b\u3089\u3001\u305d\u306e\u5f8c\u306e\u52a0\u5de5\u5de5\u7a0b\u306e\u6d41\u308c\u3092\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u677f\u6750\u306f\u5727\u5ef6\u3084\u6210\u5f62\u304c\u884c\u308f\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u3001\u68d2\u6750\u306f\u56de\u8ee2\u90e8\u54c1\u3084\u306d\u3058\u5207\u308a\u90e8\u54c1\u306b\u6a5f\u68b0\u52a0\u5de5\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u3001\u30b3\u30a4\u30eb\u306f\u9023\u7d9a\u4f9b\u7d66\u3055\u308c\u3001\u7ba1\u6750\u306f\u62e1\u7ba1\u3001\u66f2\u3052\u52a0\u5de5\u3001\u3042\u308b\u3044\u306f\u30c1\u30e5\u30fc\u30d6\u30b7\u30fc\u30c8\u3078\u306e\u63a5\u5408\u304c\u884c\u308f\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u5404\u5de5\u7a0b\u306b\u3088\u3063\u3066\u3001\u8981\u6c42\u3055\u308c\u308b\u72b6\u614b\u3001\u5bf8\u6cd5\u516c\u5dee\u3001\u8868\u9762\u4fdd\u8b77\u3001\u304a\u3088\u3073\u8a31\u5bb9\u3055\u308c\u308b\u53d6\u308a\u6271\u3044\u65b9\u6cd5\u304c\u5909\u5316\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u65e9\u3044\u6bb5\u968e\u304b\u3089\u8abf\u6574\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u6280\u8853\u7684\u306b\u306f\u9069\u3057\u305f\u88fd\u54c1\u3067\u3042\u3063\u3066\u3082\u3001\u52a0\u5de5\u696d\u8005\u5074\u3067\u4f7f\u7528\u4e0d\u80fd\u306b\u306a\u308b\u30ea\u30b9\u30af\u3092\u4f4e\u6e1b\u3067\u304d\u307e\u3059\u3002.<\/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

    \u6700\u5f8c\u306b\u3001\u660e\u78ba\u306a\u6c7a\u5b9a\u8a18\u9332\u3092\u6b8b\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u9078\u5b9a\u3057\u305f\u5408\u91d1\u3001\u5374\u4e0b\u3055\u308c\u305f\u4ee3\u66ff\u6848\u3001\u9069\u7528\u3055\u308c\u308b\u4f7f\u7528\u9650\u754c\u3001\u5bf8\u6cd5\u3001\u898f\u683c\u3001\u6570\u91cf\u3001\u7d0d\u5165\u6761\u4ef6\u3001\u304a\u3088\u3073\u6280\u8853\u7684\u9038\u8131\u3092\u627f\u8a8d\u3057\u305f\u62c5\u5f53\u8005\u3092\u8a18\u9332\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u306e\u8a18\u9332\u304c\u3042\u308c\u3070\u3001\u4fdd\u5b88\u30c1\u30fc\u30e0\u306f\u4e00\u8cab\u3057\u3066\u6750\u6599\u3092\u4ea4\u63db\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u307e\u305f\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u6563\u5728\u3059\u308b\u30e1\u30fc\u30eb\u304b\u3089\u5f53\u521d\u306e\u6c7a\u5b9a\u5185\u5bb9\u3092\u518d\u69cb\u7bc9\u3059\u308b\u3053\u3068\u3092\u5f37\u3044\u3089\u308c\u308b\u3053\u3068\u306a\u304f\u3001\u6b21\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u4fe1\u983c\u3067\u304d\u308b\u51fa\u767a\u70b9\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n

    \u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n

    Is nickel alloy plate always required for sulfuric acid tanks?<\/h3>\n

    No. Some services can use carbon steel, stainless steel, lined steel or another alloy. Nickel alloy plate becomes attractive when temperature, concentration, impurities, dilution, life target or maintenance risk makes those alternatives unsuitable.<\/p>\n

    Which nickel alloy is best for sulfuric acid?<\/h3>\n

    There is no universal answer. Alloy 20, Incoloy 825, Hastelloy grades, Alloy 59, Inconel 625 and commercially pure nickel may each fit different chemistry windows. The final selection needs the actual concentration, temperature and contaminants.<\/p>\n

    Can the same plate grade be used for the tank shell and roof?<\/h3>\n

    Sometimes, but the roof and vapor space can see acid mist and condensation that differ from the bulk liquid. Separate zone review is safer and may justify a different grade, coating or replaceable section.<\/p>\n

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

    State thickness, width, length, piece quantity, maximum piece weight, flatness, edge preference, standard, delivery condition and any project restrictions on plate size or joints.<\/p>\n

    How can buyers reduce total tank cost?<\/h3>\n

    Compare life-cycle cost, not only plate price. Reducing joints, improving layout, selecting the right corrosion allowance, confirming availability early and avoiding an unnecessary ultra-high alloy can all reduce installed cost.<\/p>\n

    Can 28Nickel quote a sulfuric acid tank plate package?<\/h3>\n

    Yes. Send the alloy or candidate grades, plate dimensions, quantity, acid composition, temperature, tank duty, standard, destination and delivery schedule so the material and commercial options can be compared.<\/p>\n

    \u6700\u7d42\u7684\u306a\u8abf\u9054\u65b9\u91dd<\/h2>\n

    For nickel alloy plate for sulfuric acid tanks, the correct material decision connects the alloy, product form, dimensions, service envelope, standards, quantity and delivery schedule.<\/p>\n

    \u6700\u3082\u6709\u7528\u306a\u898b\u7a4d\u4f9d\u983c\u66f8\u306b\u306f\u3001\u6750\u6599\u306e\u7a2e\u985e\u3001\u5408\u91d1\u3001\u5bf8\u6cd5\u3001\u4f7f\u7528\u6761\u4ef6\u3001\u898f\u683c\u3001\u6570\u91cf\u3001\u914d\u9001\u5148\u3001\u304a\u3088\u3073\u7d0d\u671f\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u60c5\u5831\u3092\u3082\u3068\u306b\u300128Nickel\u306f\u898b\u7a4d\u66f8\u3092\u4f5c\u6210\u3059\u308b\u524d\u306b\u3001\u5728\u5eab\u72b6\u6cc1\u3001\u751f\u7523\u30eb\u30fc\u30c8\u3001\u6280\u8853\u7684\u306a\u524d\u63d0\u6761\u4ef6\u3001\u304a\u3088\u3073\u5546\u696d\u7684\u306a\u9078\u629e\u80a2\u3092\u691c\u8a0e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n

    28Nickel\u306b\u898b\u7a4d\u3082\u308a\u3092\u4f9d\u983c\u3059\u308b<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"

    Engineering and purchasing guide to nickel alloy plate for sulfuric acid tanks, covering acid concentration, temperature, grade families, tank zones, standards, dimensions, cost drivers and RFQ details.<\/p>","protected":false},"author":1,"featured_media":4812,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[338,88,78,339],"class_list":["post-4811","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-industrial-materials","tag-nickel-alloy","tag-nickel-alloy-plate","tag-rfq-guide"],"_links":{"self":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts\/4811","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/comments?post=4811"}],"version-history":[{"count":1,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts\/4811\/revisions"}],"predecessor-version":[{"id":4813,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/posts\/4811\/revisions\/4813"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/media\/4812"}],"wp:attachment":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/media?parent=4811"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/categories?post=4811"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/tags?post=4811"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}