{"id":3189,"date":"2026-03-27T15:03:06","date_gmt":"2026-03-27T14:03:06","guid":{"rendered":"https:\/\/www.nickelcasting.com\/?page_id=3189"},"modified":"2026-03-27T15:07:41","modified_gmt":"2026-03-27T14:07:41","slug":"seamless","status":"publish","type":"page","link":"https:\/\/www.nickelcasting.com\/ja\/product-forms\/pipe-and-tube\/seamless\/","title":{"rendered":"Seamless Pipe\/Tube"},"content":{"rendered":"
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\n\n
\n\n
\n \u30db\u30fc\u30e0<\/a> \n \/<\/span> \n \u88fd\u54c1\u30d5\u30a9\u30fc\u30e0<\/a>\n \/<\/span> \n \u30d1\u30a4\u30d7\uff06\u30c1\u30e5\u30fc\u30d6<\/a>\n \/<\/span> \n \u30b7\u30fc\u30e0\u30ec\u30b9\n <\/div>\n\n
\n

Seamless Nickel Alloy Pipe & Tube<\/h1>\n \n

\n When absolute structural integrity and maximum pressure containment are non-negotiable, seamless tubulars are the only choice. Extruded and pierced from solid nickel alloy billets, 28Nickel's seamless pipes and tubes eliminate the vulnerabilities associated with weld seams. They are engineered to deliver unmatched reliability in severe chemical reactors, deep-water oil & gas extraction, and critical aerospace hydraulic systems.\n <\/p>\n <\/div>\n\n

Available Alloy Grades for Seamless Pipe & Tube<\/h2>\n

\n The aggressive nature of high-temperature corrosive fluids demands a homogenous material structure. We supply seamless tubular products in the world's highest-performing superalloys, ensuring uniform corrosion resistance across the entire length of the pipe.\n <\/p>\n \n

\n

\u30b0\u30ec\u30fc\u30c9\u3092\u9078\u629e\u3059\u308b\u3068\u3001\u6750\u6599\u4ed5\u69d8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\uff1a<\/h3>\n
\n \u30a4\u30f3\u30b3\u30cd\u30eb\u00ae 625 (\u512a\u308c\u305f\u8010\u5b54\u98df\u6027)<\/a>\n Inconel\u00ae 718 (High Strength Downhole\/OCTG)<\/a>\n \n Monel\u00ae 400 (HF Acid & Marine Piping)<\/a>\n Monel\u00ae K-500 (High Strength Pump Tubing)<\/a>\n \n Hastelloy\u00ae C-276 (Severe Chemical Transport)<\/a>\n MP35N\u00ae (Medical & Aerospace Tubing)<\/a>\n <\/div>\n <\/div>\n\n

Engineering Advantages of Seamless Construction<\/h2>\n

\n Unlike welded alternatives, seamless pipes and tubes possess a continuous, uniform grain structure, offering distinct advantages in critical applications.\n <\/p>\n \n

\n \n
\n
\n
\ud83d\udee1\ufe0f<\/div>\n

Maximum Pressure Ratings<\/h3>\n <\/div>\n

Without a longitudinal weld seam (which is traditionally the weakest point under hoop stress), seamless pipes can withstand working pressures typically 20% higher than welded pipes of the same dimensions and alloy.<\/p>\n <\/div>\n\n

\n
\n
\ud83d\udd2c<\/div>\n

Homogeneous Corrosion Resistance<\/h3>\n <\/div>\n

The absence of a weld Heat-Affected Zone (HAZ) means there are no localized metallurgical changes. This provides absolute uniformity in resisting localized pitting and intergranular corrosion.<\/p>\n <\/div>\n\n

\n
\n
\ud83c\udfaf<\/div>\n

Precision Dimensional Tolerances<\/h3>\n <\/div>\n

Cold-drawn seamless tubes offer incredibly tight tolerances on the Outside Diameter (OD) and Wall Thickness (WT), making them essential for proper insertion and expansion into heat exchanger tube sheets.<\/p>\n <\/div>\n\n <\/div>\n\n

Primary Seamless Tubular Products<\/h2>\n \n
\n\n
\n
\n
\u2668\ufe0f<\/div>\n

Heat Exchanger & Condenser Tubes<\/h3>\n <\/div>\n

Manufactured to strict OD and WT specifications (e.g., ASTM B163). Engineered for efficient thermal transfer while surviving aggressive cooling media like seawater or sulfuric acid.<\/p>\n <\/div>\n\n

\n
\n
\ud83c\udf9b\ufe0f<\/div>\n

Instrumentation Tubing<\/h3>\n <\/div>\n

Small-diameter, high-precision tubing (available in straight lengths or coils). Utilized for hydraulic control lines, pressure gauges, and chemical injection umbilicals in offshore platforms.<\/p>\n <\/div>\n\n

\n
\n
\ud83d\udee2\ufe0f<\/div>\n

Heavy-Wall Process Piping<\/h3>\n <\/div>\n

Large Nominal Pipe Size (NPS) seamless pipes in heavy schedules (Sch 80, Sch 160, XXH). Designed for the main arteries of chemical plants handling high-temperature, high-pressure corrosive fluids.<\/p>\n <\/div>\n\n

\n
\n
\ud83d\udd73\ufe0f<\/div>\n

OCTG \/ Downhole Tubulars<\/h3>\n <\/div>\n

Oil Country Tubular Goods (OCTG) utilized deep underground. Formed from high-strength superalloys (like \u30a4\u30f3\u30b3\u30cd\u30eb718<\/a>) to resist sour gas (H2S), extreme bottom-hole pressure, and chloride stress cracking.<\/p>\n <\/div>\n\n <\/div>\n\n

\u6a19\u6e96\u4ed5\u69d8\u3068\u5bf8\u6cd5<\/div>\n
\n \n \n \n \n \n \n \n \n \n
\u4ed5\u69d8\u30ab\u30c6\u30b4\u30ea\u30fc<\/th>\n \u8a73\u7d30\u3068\u898f\u683c<\/th>\n <\/tr>\n <\/thead>\n
\u6a19\u6e96\u4ed5\u69d8<\/strong><\/td>\n ASTM B163 (Condenser\/Heat Exchanger Tube), ASTM B165 (Monel Seamless), ASTM B167 \/ B444 (Inconel Seamless), ASTM B622 (Hastelloy Seamless)<\/td>\n <\/tr>\n
Pipe Size Range (NPS)<\/strong><\/td>\n 1\/8\" NB to 24\" NB (Schedules: 10S, 40S, 80S, 160, XXH)<\/td>\n <\/tr>\n
Tube Size Range (OD)<\/strong><\/td>\n 1\/16\" OD to 8\" OD (Wall Thickness: 0.010\" to 0.500\"+)<\/td>\n <\/tr>\n
Delivery Conditions<\/strong><\/td>\n Annealed & Pickled, Bright Annealed, Cold Drawn, Extruded<\/td>\n <\/tr>\n
\u975e\u7834\u58ca\u691c\u67fb (NDT)<\/strong><\/td>\n 100% Hydrostatic Testing, Eddy Current Testing (ECT), Ultrasonic Testing (UT)<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n <\/div>\n\n
\n

Need Seamless Reliability?<\/h3>\n

Specify whether you need Pipe (NPS & Schedule) or Tube (OD & Wall Thickness), along with your required alloy grade (e.g., seamless Hastelloy C276 tube). We provide full material traceability and \u30ab\u30b9\u30bf\u30e0<\/a> cut-to-length services.<\/p>\n Get a Seamless Pipe\/Tube Quote<\/a>\n <\/div>\n\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Home \/ Product Forms \/ Pipe & Tube \/ Seamless Seamless Nickel Alloy Pipe & Tube When absolute structural integrity and maximum pressure containment are non-negotiable, seamless tubulars are the only choice. Extruded and pierced from solid nickel alloy billets, 28Nickel’s seamless pipes and tubes eliminate the vulnerabilities associated with weld seams. They are engineered to deliver unmatched reliability in severe chemical reactors, deep-water oil & gas extraction, and critical aerospace hydraulic systems. Available Alloy Grades for Seamless Pipe & Tube The aggressive nature of high-temperature corrosive fluids demands a homogenous material structure. We supply seamless tubular products in the world’s highest-performing superalloys, ensuring uniform corrosion resistance across the entire […]<\/p>","protected":false},"author":1,"featured_media":0,"parent":3181,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-3189","page","type-page","status-publish","hentry"],"spectra_custom_meta":{"_edit_lock":["1774620520:1"],"_edit_last":["1"],"_elementor_edit_mode":["builder"],"_astra_content_layout_flag":["disabled"],"ast-title-bar-display":["disabled"],"ast-featured-img":["disabled"],"site-content-layout":["page-builder"],"ast-site-content-layout":["full-width-container"],"site-sidebar-layout":["no-sidebar"],"_elementor_template_type":["wp-page"],"_elementor_version":["3.33.2"],"_elementor_pro_version":["3.32.3"],"rank_math_seo_score":["56"],"rank_math_internal_links_processed":["1"],"_wp_page_template":["default"],"_elementor_data":["[{\"id\":\"5867cec\",\"elType\":\"container\",\"settings\":{\"display_condition_list\":[{\"display_condition_login_status\":\"subscriber\",\"_id\":\"11439dc\"}]},\"elements\":[{\"id\":\"52a4c03\",\"elType\":\"widget\",\"settings\":{\"html\":\"\\n\\n

\\n\\n
\\n Home<\\\/a> \\n \\\/<\\\/span> \\n Product Forms<\\\/a>\\n \\\/<\\\/span> \\n Pipe & Tube<\\\/a>\\n \\\/<\\\/span> \\n Seamless\\n <\\\/div>\\n\\n
\\n

Seamless Nickel Alloy Pipe & Tube<\\\/h1>\\n \\n

\\n When absolute structural integrity and maximum pressure containment are non-negotiable, seamless tubulars are the only choice. Extruded and pierced from solid nickel alloy billets, 28Nickel's seamless pipes and tubes eliminate the vulnerabilities associated with weld seams. They are engineered to deliver unmatched reliability in severe chemical reactors, deep-water oil & gas extraction, and critical aerospace hydraulic systems.\\n <\\\/p>\\n <\\\/div>\\n\\n

Available Alloy Grades for Seamless Pipe & Tube<\\\/h2>\\n

\\n The aggressive nature of high-temperature corrosive fluids demands a homogenous material structure. We supply seamless tubular products in the world's highest-performing superalloys, ensuring uniform corrosion resistance across the entire length of the pipe.\\n <\\\/p>\\n \\n

\\n

Select a Grade to View Material Specs:<\\\/h3>\\n
\\n Inconel\\u00ae 625 (Excellent Pitting Resistance)<\\\/a>\\n Inconel\\u00ae 718 (High Strength Downhole\\\/OCTG)<\\\/a>\\n \\n Monel\\u00ae 400 (HF Acid & Marine Piping)<\\\/a>\\n Monel\\u00ae K-500 (High Strength Pump Tubing)<\\\/a>\\n \\n Hastelloy\\u00ae C-276 (Severe Chemical Transport)<\\\/a>\\n MP35N\\u00ae (Medical & Aerospace Tubing)<\\\/a>\\n <\\\/div>\\n <\\\/div>\\n\\n

Engineering Advantages of Seamless Construction<\\\/h2>\\n

\\n Unlike welded alternatives, seamless pipes and tubes possess a continuous, uniform grain structure, offering distinct advantages in critical applications.\\n <\\\/p>\\n \\n

\\n \\n
\\n
\\n
\\ud83d\\udee1\\ufe0f<\\\/div>\\n

Maximum Pressure Ratings<\\\/h3>\\n <\\\/div>\\n

Without a longitudinal weld seam (which is traditionally the weakest point under hoop stress), seamless pipes can withstand working pressures typically 20% higher than welded pipes of the same dimensions and alloy.<\\\/p>\\n <\\\/div>\\n\\n

\\n
\\n
\\ud83d\\udd2c<\\\/div>\\n

Homogeneous Corrosion Resistance<\\\/h3>\\n <\\\/div>\\n

The absence of a weld Heat-Affected Zone (HAZ) means there are no localized metallurgical changes. This provides absolute uniformity in resisting localized pitting and intergranular corrosion.<\\\/p>\\n <\\\/div>\\n\\n

\\n
\\n
\\ud83c\\udfaf<\\\/div>\\n

Precision Dimensional Tolerances<\\\/h3>\\n <\\\/div>\\n

Cold-drawn seamless tubes offer incredibly tight tolerances on the Outside Diameter (OD) and Wall Thickness (WT), making them essential for proper insertion and expansion into heat exchanger tube sheets.<\\\/p>\\n <\\\/div>\\n\\n <\\\/div>\\n\\n

Primary Seamless Tubular Products<\\\/h2>\\n \\n
\\n\\n
\\n
\\n
\\u2668\\ufe0f<\\\/div>\\n

Heat Exchanger & Condenser Tubes<\\\/h3>\\n <\\\/div>\\n

Manufactured to strict OD and WT specifications (e.g., ASTM B163). Engineered for efficient thermal transfer while surviving aggressive cooling media like seawater or sulfuric acid.<\\\/p>\\n <\\\/div>\\n\\n

\\n
\\n
\\ud83c\\udf9b\\ufe0f<\\\/div>\\n

Instrumentation Tubing<\\\/h3>\\n <\\\/div>\\n

Small-diameter, high-precision tubing (available in straight lengths or coils). Utilized for hydraulic control lines, pressure gauges, and chemical injection umbilicals in offshore platforms.<\\\/p>\\n <\\\/div>\\n\\n

\\n
\\n
\\ud83d\\udee2\\ufe0f<\\\/div>\\n

Heavy-Wall Process Piping<\\\/h3>\\n <\\\/div>\\n

Large Nominal Pipe Size (NPS) seamless pipes in heavy schedules (Sch 80, Sch 160, XXH). Designed for the main arteries of chemical plants handling high-temperature, high-pressure corrosive fluids.<\\\/p>\\n <\\\/div>\\n\\n

\\n
\\n
\\ud83d\\udd73\\ufe0f<\\\/div>\\n

OCTG \\\/ Downhole Tubulars<\\\/h3>\\n <\\\/div>\\n

Oil Country Tubular Goods (OCTG) utilized deep underground. Formed from high-strength superalloys (like Inconel 718) to resist sour gas (H2S), extreme bottom-hole pressure, and chloride stress cracking.<\\\/p>\\n <\\\/div>\\n\\n <\\\/div>\\n\\n

Standard Specifications & Dimensions<\\\/div>\\n
\\n \\n \\n \\n \\n \\n \\n \\n \\n \\n
Specification Category<\\\/th>\\n Details & Standards<\\\/th>\\n <\\\/tr>\\n <\\\/thead>\\n
Standard Specifications<\\\/strong><\\\/td>\\n ASTM B163 (Condenser\\\/Heat Exchanger Tube), ASTM B165 (Monel Seamless), ASTM B167 \\\/ B444 (Inconel Seamless), ASTM B622 (Hastelloy Seamless)<\\\/td>\\n <\\\/tr>\\n
Pipe Size Range (NPS)<\\\/strong><\\\/td>\\n 1\\\/8\\\" NB to 24\\\" NB (Schedules: 10S, 40S, 80S, 160, XXH)<\\\/td>\\n <\\\/tr>\\n
Tube Size Range (OD)<\\\/strong><\\\/td>\\n 1\\\/16\\\" OD to 8\\\" OD (Wall Thickness: 0.010\\\" to 0.500\\\"+)<\\\/td>\\n <\\\/tr>\\n
Delivery Conditions<\\\/strong><\\\/td>\\n Annealed & Pickled, Bright Annealed, Cold Drawn, Extruded<\\\/td>\\n <\\\/tr>\\n
Non-Destructive Testing (NDT)<\\\/strong><\\\/td>\\n 100% Hydrostatic Testing, Eddy Current Testing (ECT), Ultrasonic Testing (UT)<\\\/td>\\n <\\\/tr>\\n <\\\/tbody>\\n <\\\/table>\\n <\\\/div>\\n\\n
\\n

Need Seamless Reliability?<\\\/h3>\\n

Specify whether you need Pipe (NPS & Schedule) or Tube (OD & Wall Thickness), along with your required alloy grade (e.g., seamless Hastelloy C276 tube). We provide full material traceability and custom cut-to-length services.<\\\/p>\\n Get a Seamless Pipe\\\/Tube Quote<\\\/a>\\n <\\\/div>\\n\\n<\\\/div>\",\"display_condition_list\":[{\"display_condition_login_status\":\"subscriber\",\"_id\":\"2260e2c\"}]},\"elements\":[],\"widgetType\":\"html\"}],\"isInner\":false}]"],"_elementor_page_settings":["a:0:{}"],"_elementor_controls_usage":["a:2:{s:4:\"html\";a:3:{s:5:\"count\";i:1;s:15:\"control_percent\";i:0;s:8:\"controls\";a:2:{s:7:\"content\";a:1:{s:13:\"section_title\";a:1:{s:4:\"html\";i:1;}}s:8:\"advanced\";a:1:{s:26:\"display_conditions_section\";a:1:{s:22:\"display_condition_list\";i:1;}}}}s:9:\"container\";a:3:{s:5:\"count\";i:1;s:15:\"control_percent\";i:0;s:8:\"controls\";a:1:{s:8:\"advanced\";a:1:{s:26:\"display_conditions_section\";a:1:{s:22:\"display_condition_list\";i:1;}}}}}"],"rank_math_focus_keyword":["seamless pipe\/tube"],"rank_math_description":["Seamless nickel alloy pipe and tube in Inconel, Monel, Hastelloy and MP35N for high-pressure, corrosion-resistant chemical, offshore and aerospace use."],"ilj_blacklistdefinition":["a:0:{}"],"ilj_linkdefinition":["a:1:{i:0;s:19:\"seamless pipe|\/tube\";}"],"site-content-style":["unboxed"],"site-sidebar-style":["unboxed"],"astra-migrate-meta-layouts":["set"],"theme-transparent-header-meta":["default"],"_uag_page_assets":["a:9:{s:3:\"css\";s:263:\".uag-blocks-common-selector{z-index:var(--z-index-desktop) !important}@media (max-width: 976px){.uag-blocks-common-selector{z-index:var(--z-index-tablet) !important}}@media (max-width: 767px){.uag-blocks-common-selector{z-index:var(--z-index-mobile) !important}}\n\";s:2:\"js\";s:0:\"\";s:18:\"current_block_list\";a:8:{i:0;s:11:\"core\/search\";i:1;s:10:\"core\/group\";i:2;s:12:\"core\/heading\";i:3;s:17:\"core\/latest-posts\";i:4;s:20:\"core\/latest-comments\";i:5;s:13:\"core\/archives\";i:6;s:15:\"core\/categories\";i:7;s:10:\"core\/image\";}s:8:\"uag_flag\";b:0;s:11:\"uag_version\";s:10:\"1775384825\";s:6:\"gfonts\";a:0:{}s:10:\"gfonts_url\";s:0:\"\";s:12:\"gfonts_files\";a:0:{}s:14:\"uag_faq_layout\";b:0;}"],"_uag_css_file_name":["uag-css-3189.css"],"_elementor_page_assets":["a:1:{s:7:\"scripts\";a:1:{i:0;s:18:\"elementor-frontend\";}}"],"_elementor_css":["a:6:{s:4:\"time\";i:1775390100;s:5:\"fonts\";a:0:{}s:5:\"icons\";a:0:{}s:20:\"dynamic_elements_ids\";a:0:{}s:6:\"status\";s:4:\"file\";i:0;s:0:\"\";}"],"_elementor_element_cache":["{\"timeout\":1775480100,\"value\":{\"content\":\"

\\n\\t\\t\\t\\t\\t
\\n\\t\\t\\t\\t
\\n\\t\\t\\t\\t
\\n\\t\\t\\t\\t\\t\\n\\n
\\n\\n
\\n Home<\\\/a> \\n \\\/<\\\/span> \\n Product Forms<\\\/a>\\n \\\/<\\\/span> \\n Pipe & Tube<\\\/a>\\n \\\/<\\\/span> \\n Seamless\\n <\\\/div>\\n\\n
\\n

Seamless Nickel Alloy Pipe & Tube<\\\/h1>\\n \\n

\\n When absolute structural integrity and maximum pressure containment are non-negotiable, seamless tubulars are the only choice. Extruded and pierced from solid nickel alloy billets, 28Nickel's seamless pipes and tubes eliminate the vulnerabilities associated with weld seams. They are engineered to deliver unmatched reliability in severe chemical reactors, deep-water oil & gas extraction, and critical aerospace hydraulic systems.\\n <\\\/p>\\n <\\\/div>\\n\\n

Available Alloy Grades for Seamless Pipe & Tube<\\\/h2>\\n

\\n The aggressive nature of high-temperature corrosive fluids demands a homogenous material structure. We supply seamless tubular products in the world's highest-performing superalloys, ensuring uniform corrosion resistance across the entire length of the pipe.\\n <\\\/p>\\n \\n

\\n

Select a Grade to View Material Specs:<\\\/h3>\\n
\\n Inconel\\u00ae 625 (Excellent Pitting Resistance)<\\\/a>\\n Inconel\\u00ae 718 (High Strength Downhole\\\/OCTG)<\\\/a>\\n \\n Monel\\u00ae 400 (HF Acid & Marine Piping)<\\\/a>\\n Monel\\u00ae K-500 (High Strength Pump Tubing)<\\\/a>\\n \\n Hastelloy\\u00ae C-276 (Severe Chemical Transport)<\\\/a>\\n MP35N\\u00ae (Medical & Aerospace Tubing)<\\\/a>\\n <\\\/div>\\n <\\\/div>\\n\\n

Engineering Advantages of Seamless Construction<\\\/h2>\\n

\\n Unlike welded alternatives, seamless pipes and tubes possess a continuous, uniform grain structure, offering distinct advantages in critical applications.\\n <\\\/p>\\n \\n

\\n \\n
\\n
\\n
\\ud83d\\udee1\\ufe0f<\\\/div>\\n

Maximum Pressure Ratings<\\\/h3>\\n <\\\/div>\\n

Without a longitudinal weld seam (which is traditionally the weakest point under hoop stress), seamless pipes can withstand working pressures typically 20% higher than welded pipes of the same dimensions and alloy.<\\\/p>\\n <\\\/div>\\n\\n

\\n
\\n
\\ud83d\\udd2c<\\\/div>\\n

Homogeneous Corrosion Resistance<\\\/h3>\\n <\\\/div>\\n

The absence of a weld Heat-Affected Zone (HAZ) means there are no localized metallurgical changes. This provides absolute uniformity in resisting localized pitting and intergranular corrosion.<\\\/p>\\n <\\\/div>\\n\\n

\\n
\\n
\\ud83c\\udfaf<\\\/div>\\n

Precision Dimensional Tolerances<\\\/h3>\\n <\\\/div>\\n

Cold-drawn seamless tubes offer incredibly tight tolerances on the Outside Diameter (OD) and Wall Thickness (WT), making them essential for proper insertion and expansion into heat exchanger tube sheets.<\\\/p>\\n <\\\/div>\\n\\n <\\\/div>\\n\\n

Primary Seamless Tubular Products<\\\/h2>\\n \\n
\\n\\n
\\n
\\n
\\u2668\\ufe0f<\\\/div>\\n

Heat Exchanger & Condenser Tubes<\\\/h3>\\n <\\\/div>\\n

Manufactured to strict OD and WT specifications (e.g., ASTM B163). Engineered for efficient thermal transfer while surviving aggressive cooling media like seawater or sulfuric acid.<\\\/p>\\n <\\\/div>\\n\\n

\\n
\\n
\\ud83c\\udf9b\\ufe0f<\\\/div>\\n

Instrumentation Tubing<\\\/h3>\\n <\\\/div>\\n

Small-diameter, high-precision tubing (available in straight lengths or coils). Utilized for hydraulic control lines, pressure gauges, and chemical injection umbilicals in offshore platforms.<\\\/p>\\n <\\\/div>\\n\\n

\\n
\\n
\\ud83d\\udee2\\ufe0f<\\\/div>\\n

Heavy-Wall Process Piping<\\\/h3>\\n <\\\/div>\\n

Large Nominal Pipe Size (NPS) seamless pipes in heavy schedules (Sch 80, Sch 160, XXH). Designed for the main arteries of chemical plants handling high-temperature, high-pressure corrosive fluids.<\\\/p>\\n <\\\/div>\\n\\n

\\n
\\n
\\ud83d\\udd73\\ufe0f<\\\/div>\\n

OCTG \\\/ Downhole Tubulars<\\\/h3>\\n <\\\/div>\\n

Oil Country Tubular Goods (OCTG) utilized deep underground. Formed from high-strength superalloys (like Inconel 718) to resist sour gas (H2S), extreme bottom-hole pressure, and chloride stress cracking.<\\\/p>\\n <\\\/div>\\n\\n <\\\/div>\\n\\n

Standard Specifications & Dimensions<\\\/div>\\n
\\n \\n \\n \\n \\n \\n \\n \\n \\n \\n
Specification Category<\\\/th>\\n Details & Standards<\\\/th>\\n <\\\/tr>\\n <\\\/thead>\\n
Standard Specifications<\\\/strong><\\\/td>\\n ASTM B163 (Condenser\\\/Heat Exchanger Tube), ASTM B165 (Monel Seamless), ASTM B167 \\\/ B444 (Inconel Seamless), ASTM B622 (Hastelloy Seamless)<\\\/td>\\n <\\\/tr>\\n
Pipe Size Range (NPS)<\\\/strong><\\\/td>\\n 1\\\/8\\\" NB to 24\\\" NB (Schedules: 10S, 40S, 80S, 160, XXH)<\\\/td>\\n <\\\/tr>\\n
Tube Size Range (OD)<\\\/strong><\\\/td>\\n 1\\\/16\\\" OD to 8\\\" OD (Wall Thickness: 0.010\\\" to 0.500\\\"+)<\\\/td>\\n <\\\/tr>\\n
Delivery Conditions<\\\/strong><\\\/td>\\n Annealed & Pickled, Bright Annealed, Cold Drawn, Extruded<\\\/td>\\n <\\\/tr>\\n
Non-Destructive Testing (NDT)<\\\/strong><\\\/td>\\n 100% Hydrostatic Testing, Eddy Current Testing (ECT), Ultrasonic Testing (UT)<\\\/td>\\n <\\\/tr>\\n <\\\/tbody>\\n <\\\/table>\\n <\\\/div>\\n\\n
\\n

Need Seamless Reliability?<\\\/h3>\\n

Specify whether you need Pipe (NPS & Schedule) or Tube (OD & Wall Thickness), along with your required alloy grade (e.g., seamless Hastelloy C276 tube). We provide full material traceability and custom cut-to-length services.<\\\/p>\\n Get a Seamless Pipe\\\/Tube Quote<\\\/a>\\n <\\\/div>\\n\\n<\\\/div>\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t\\t<\\\/div>\\n\\t\\t\\t\\t<\\\/div>\\n\\t\\t\",\"scripts\":[],\"styles\":[]}}"]},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"nickel","author_link":"https:\/\/www.nickelcasting.com\/ja\/author\/nickel\/"},"uagb_comment_info":0,"uagb_excerpt":"Home \/ Product Forms \/ Pipe & Tube \/ Seamless Seamless Nickel Alloy Pipe & Tube When absolute structural integrity and maximum pressure containment are non-negotiable, seamless tubulars are the only choice. Extruded and pierced from solid nickel alloy billets, 28Nickel’s seamless pipes and tubes eliminate the vulnerabilities associated with weld seams. They are engineered…","_links":{"self":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/pages\/3189","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/types\/page"}],"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=3189"}],"version-history":[{"count":5,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/pages\/3189\/revisions"}],"predecessor-version":[{"id":3197,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/pages\/3189\/revisions\/3197"}],"up":[{"embeddable":true,"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/pages\/3181"}],"wp:attachment":[{"href":"https:\/\/www.nickelcasting.com\/ja\/wp-json\/wp\/v2\/media?parent=3189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}