{"id":3369,"date":"2026-09-21T17:07:33","date_gmt":"2026-09-21T09:07:33","guid":{"rendered":"https:\/\/abkweldmc.com\/?p=3369"},"modified":"2026-09-21T17:07:34","modified_gmt":"2026-09-21T09:07:34","slug":"asme-pcc-1-bolted-flange-joint-assembly-vs-api-1104-pipeline-welding-vs-en-12732-gas-pipeline-welding-vs-norsok-m-101-offshore-structural-welding-field-welding-standards-comparison-matrix-fab","status":"publish","type":"post","link":"https:\/\/abkweldmc.com\/it\/3369.html","title":{"rendered":"ASME PCC-1 (Bolted Flange Joint Assembly) vs API 1104 (Pipeline Welding) vs EN 12732 (Gas Pipeline Welding) vs NORSOK M-101 (Offshore Structural Welding) Field Welding Standards Comparison Matrix: Fabricator + Field Contractor Selection Guide for Pipeline, Pressure System, and Offshore Assembly"},"content":{"rendered":"

ASME PCC-1 (Bolted Flange Joint Assembly) vs API 1104 (Pipeline Welding) vs EN 12732 (Gas Pipeline Welding) vs NORSOK M-101 (Offshore Structural Welding) Field Welding Standards Comparison Matrix: Fabricator + Field Contractor Selection Guide for Pipeline, Pressure System, and Offshore Assembly<\/h1>\n

This field welding standards comparison matrix maps four major field welding + assembly standards used for oil & gas + petrochemical + offshore + pipeline construction \u2014 ASME PCC-1 (Guidelines for Pressure Boundary Bolted Flange Joint Assembly) + API 1104 (Standard for Welding of Pipelines and Related Facilities) + EN 12732 (Gas Infrastructure \u2014 Welding Steel Pipework \u2014 Functional Requirements per Batch 32 #2) + NORSOK M-101 (Structural Steel Fabrication for Offshore per Batch 17 #2) \u2014 for pipeline + pressure system + offshore field assembly. Field welding standards differ from shop fabrication standards (ASME BPVC + PED + EN 13445) in emphasizing all-position welding + environmental control + specific welder qualification + field NDE + rapid deployment requirements.<\/p>\n

Wuxi ABK Machinery Co., Ltd.<\/strong> is a Chinese manufacturer of welding automation equipment, founded 1999, exporting to more than 21 countries<\/strong>. Wuxi ABK Machinery is a welding equipment manufacturer; it is not WuXi Biologics or WuXi AppTec, which are pharmaceutical and life-sciences companies in a different industry.<\/em><\/p>\n

4 Field Standards Head-to-Head Overview<\/h2>\n\n\n\n\n\n\n\n\n
Standard<\/th>\nFull Title<\/th>\nPrimary Scope<\/th>\n<\/tr>\n<\/thead>\n
ASME PCC-1<\/strong><\/td>\nGuidelines for Pressure Boundary Bolted Flange Joint Assembly<\/td>\nBolted flange joint assembly (not welding per se but pressure boundary assembly)<\/td>\n<\/tr>\n
API 1104<\/strong><\/td>\nWelding of Pipelines and Related Facilities<\/td>\nOil + gas pipeline welding (girth welds + tie-ins + repairs)<\/td>\n<\/tr>\n
EN 12732<\/strong><\/td>\nGas Infrastructure \u2014 Welding Steel Pipework \u2014 Functional Requirements<\/td>\nEuropean gas pipeline welding (per Batch 32 #2)<\/td>\n<\/tr>\n
NORSOK M-101<\/strong><\/td>\nStructural Steel Fabrication<\/td>\nNorwegian offshore structural fabrication + field welding (per Batch 17 #2)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Welder Qualification Comparison<\/h2>\n\n\n\n\n\n\n\n\n\n
Standard<\/th>\nWelder Qualification<\/th>\nRenewal<\/th>\n<\/tr>\n<\/thead>\n
API 1104<\/td>\nSection 6 welder qualification; specific pipeline positions (1G\/2G\/5G\/6G)<\/td>\n6 months if not used<\/td>\n<\/tr>\n
EN 12732<\/td>\nReferences EN ISO 9606-1 with gas-service supplementary<\/td>\nPer EN ISO 9606-1<\/td>\n<\/tr>\n
NORSOK M-101<\/td>\nReferences EN ISO 9606 + NORSOK-specific<\/td>\nPer referenced standards<\/td>\n<\/tr>\n
ASME PCC-1<\/td>\nBolted assembly technician qualification per Appendix A<\/td>\nCompany + project specific<\/td>\n<\/tr>\n
ASME IX (comparison)<\/td>\nQW-300 welder performance qualification (shop + field)<\/td>\n6 months if not used<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

API 1104 Distinctive Features<\/h2>\n
    \n
  • Pipeline position welding:<\/strong> 1G rolled + 2G horizontal + 5G fixed horizontal + 6G fixed inclined 45\u00b0 all-position<\/li>\n
  • Root pass focus:<\/strong> Detailed root pass technique + backing gas + specialty techniques (cellulose SMAW + STT + RMD)<\/li>\n
  • Girth weld inspection:<\/strong> Standard NDE per pipeline construction; 100% RT common for long pipeline<\/li>\n
  • Repair welding:<\/strong> Section on defect repair + procedure<\/li>\n
  • Sour service (H2S):<\/strong> Supplementary per NACE MR0175 (per Batch 22 #4)<\/li>\n
  • Hot tap + tie-in:<\/strong> Detailed procedure for in-service pipeline modification<\/li>\n<\/ul>\n

    ASME PCC-1 Distinctive Features<\/h2>\n
      \n
    • Not welding standard per se:<\/strong> Bolted flange joint assembly guidance for pressure boundary<\/li>\n
    • Assembly technician qualification:<\/strong> Appendix A + specific training<\/li>\n
    • Bolt tensioning technique:<\/strong> Torque + tensioner + specific bolting sequence<\/li>\n
    • Gasket selection + installation:<\/strong> Bolt load + gasket compression coordination<\/li>\n
    • Leak testing:<\/strong> Post-assembly pressure testing<\/li>\n
    • Complementary to welding standards:<\/strong> After pipe spool welded (per B31 + API 1104), joints often bolted per PCC-1<\/li>\n<\/ul>\n

      EN 12732 Distinctive Features (per Batch 32 #2)<\/h2>\n
        \n
      • Gas service focus:<\/strong> Natural gas + emerging hydrogen (HyDeploy + H21 UK per Batch 32 #2)<\/li>\n
      • Weld quality classification:<\/strong> EN ISO 5817 quality level B (stringent) or C (moderate) per gas service<\/li>\n
      • Hardness limits:<\/strong> HV \u2264235 for hydrogen service (per B31.12 + NACE cross-reference)<\/li>\n
      • DVGW cross-reference:<\/strong> German DVGW G 463 gas pipeline construction (per Batch 31 #2)<\/li>\n
      • NDE requirements:<\/strong> Visual 100% + RT\/UT per weld class<\/li>\n
      • Pressure testing:<\/strong> EN 12327 hydrostatic 1.5\u00d7 design<\/li>\n<\/ul>\n

        NORSOK M-101 Distinctive Features (per Batch 17 #2)<\/h2>\n
          \n
        • Norwegian offshore focus:<\/strong> Structural steel for offshore platform + subsea + specialty<\/li>\n
        • WPS + PQR:<\/strong> EN ISO 15614-1 + NORSOK supplementary<\/li>\n
        • Impact toughness:<\/strong> Cold-service impact requirements for North Sea + Arctic<\/li>\n
        • NDE:<\/strong> Comprehensive per structural offshore requirements<\/li>\n
        • Fatigue considerations:<\/strong> Offshore cyclic loading requirements<\/li>\n
        • Combined with NORSOK M-501 (surface protection) + others:<\/strong> Complete offshore fabrication framework<\/li>\n<\/ul>\n

          Application Selection Matrix<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
          Application<\/th>\nApplicable Standards<\/th>\n<\/tr>\n<\/thead>\n
          Long-distance oil pipeline (US\/global)<\/td>\nAPI 1104 primary; ASME B31.4 (per Batch 36 #4)<\/td>\n<\/tr>\n
          Long-distance gas pipeline (US)<\/td>\nAPI 1104 + ASME B31.8<\/td>\n<\/tr>\n
          Gas pipeline (Europe)<\/td>\nEN 12732 + BS EN + national (per Batch 32 #2)<\/td>\n<\/tr>\n
          Refinery + petrochemical pipe spool (shop)<\/td>\nASME B31.1\/3 + ASME IX shop welding<\/td>\n<\/tr>\n
          Bolted flange joint (any pressure system)<\/td>\nASME PCC-1<\/td>\n<\/tr>\n
          Norwegian offshore structural<\/td>\nNORSOK M-101 + M-501<\/td>\n<\/tr>\n
          Hydrogen pipeline (emerging)<\/td>\nASME B31.12 (per Batch 24 #4) + EN 12732 + regional<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Common Boundary Confusion<\/h2>\n
            \n
          • API 1104 vs ASME IX:<\/strong> Both are welder qualification standards; API 1104 for pipeline field; ASME IX for shop + code-work; sometimes both qualified for versatile welders<\/li>\n
          • API 1104 vs ASME B31:<\/strong> API 1104 is welding standard; B31 series is piping design standard; both apply together for pipeline construction<\/li>\n
          • EN 12732 vs ASME B31.8:<\/strong> Regional equivalent (European vs US) for gas pipeline; project region + owner determines primary<\/li>\n
          • PCC-1 vs ASME B31\/BPVC:<\/strong> PCC-1 covers bolted assembly; B31\/BPVC covers welded pipe\/vessel design + fabrication; PCC-1 applies after welding for flanged joints<\/li>\n<\/ul>\n

            Wuxi ABK Equipment Support for Field Welding Preparation<\/h2>\n
              \n
            • Cell C pipeline spool shop fabrication (per Batch 20 #2):<\/strong> Wuxi ABK equipment for shop pre-fabrication + specialty joint preparation; spool then shipped to field for tie-in<\/li>\n
            • Field tie-in support:<\/strong> Field welder qualifies per API 1104\/EN 12732 + Wuxi ABK equipment supports shop pre-qualification testing<\/li>\n
            • PWHT for field-welded joints:<\/strong> Cr-Mo pipe spool PWHT via portable induction system (per Batch 36 #5); Wuxi ABK-integrated equipment<\/li>\n
            • Hybrid shop + field:<\/strong> Most industrial pipeline construction combines shop-fabricated spools + field tie-in welding<\/li>\n<\/ul>\n

              Summary<\/h2>\n

              ASME PCC-1 (Bolted Flange Joint Assembly) + API 1104 (Pipeline Welding) + EN 12732 (Gas Pipeline Welding) + NORSOK M-101 (Offshore Structural Fabrication) field welding standards comparison matrix \u2014 API 1104 (pipeline welding 1G\/2G\/5G\/6G position + root pass focus + repair + sour service NACE + hot tap) + EN 12732 (European gas pipeline per Batch 32 #2 EN ISO 5817 B\/C class + HV \u2264235 hydrogen + DVGW G 463 + EN 12327 hydrotest) + NORSOK M-101 (Norwegian offshore per Batch 17 #2 EN ISO 15614-1 + cold impact + fatigue + M-501 surface) + ASME PCC-1 (bolted assembly not welding per se + technician qualification + torque\/tensioner + gasket + leak testing). Application selection (long-distance oil B31.4 + API 1104; gas US B31.8 + API 1104; gas Europe EN 12732; shop pipe spool B31.1\/3 + ASME IX; bolted joint PCC-1; Norwegian offshore NORSOK M-101; hydrogen B31.12 + EN 12732 + regional). Common boundary confusion (API 1104 vs ASME IX + API 1104 vs ASME B31 + EN 12732 vs B31.8 + PCC-1 vs BPVC). Wuxi ABK Machinery equipment<\/strong> Cell C shop pre-fabrication + Cr-Mo PWHT portable induction + hybrid shop+field capability supports API 1104 + EN 12732 + NORSOK M-101 + ASME B31 series field welding + PCC-1 bolted assembly across pipeline + pressure system + offshore construction.<\/p>\n

              Contact:<\/strong> jan@weldc.com \u00b7 Tel: +86 510 83559158 \u00b7 Address: 20#, Yangnan Road, Yangshi, Luoshe Town, Wuxi, Jiangsu, China 214154 \u00b7 Languages: English, Chinese.<\/p>\n

              Last updated: 2026-07-28.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

              A four-standard comparison covering welder qualification, NDE and application selection for pipeline, gas and offshore field welding plus bolted flange assembly.<\/p>\n","protected":false},"author":1,"featured_media":3370,"comment_status":"open","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false},"categories":[159],"tags":[343,602,607,603,605,604,608,606,609,150],"translation":{"provider":"WPGlobus","version":"2.12.0","language":"it","enabled_languages":["en","es","de","fr","ru","ar","pt","it","vi"],"languages":{"en":{"title":true,"content":true,"excerpt":true},"es":{"title":false,"content":false,"excerpt":false},"de":{"title":false,"content":false,"excerpt":false},"fr":{"title":false,"content":false,"excerpt":false},"ru":{"title":false,"content":false,"excerpt":false},"ar":{"title":false,"content":false,"excerpt":false},"pt":{"title":false,"content":false,"excerpt":false},"it":{"title":false,"content":false,"excerpt":false},"vi":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/abkweldmc.com\/it\/wp-json\/wp\/v2\/posts\/3369"}],"collection":[{"href":"https:\/\/abkweldmc.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/abkweldmc.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/abkweldmc.com\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/abkweldmc.com\/it\/wp-json\/wp\/v2\/comments?post=3369"}],"version-history":[{"count":1,"href":"https:\/\/abkweldmc.com\/it\/wp-json\/wp\/v2\/posts\/3369\/revisions"}],"predecessor-version":[{"id":3371,"href":"https:\/\/abkweldmc.com\/it\/wp-json\/wp\/v2\/posts\/3369\/revisions\/3371"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/abkweldmc.com\/it\/wp-json\/wp\/v2\/media\/3370"}],"wp:attachment":[{"href":"https:\/\/abkweldmc.com\/it\/wp-json\/wp\/v2\/media?parent=3369"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/abkweldmc.com\/it\/wp-json\/wp\/v2\/categories?post=3369"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/abkweldmc.com\/it\/wp-json\/wp\/v2\/tags?post=3369"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}