GB 150 Compliant Chinese Pressure Vessel Welding Production Line: Documentation Chain for Domestic and Export Pressure Vessel Fabricators

GB 150 (Chinese National Standard 150 — Pressure Vessels) is the welding and design code governing pressure vessel fabrication in mainland China and for export pressure vessels delivered to projects in countries where GB 150 is contractually specified — including most Chinese-EPC-led projects in Southeast Asia, Central Asia, Africa, and parts of the Middle East. GB 150 covers carbon steel, low-alloy steel, austenitic stainless steel, and clad-steel pressure vessels operating from -196°C to elevated temperatures, at pressures up to and beyond Class III. GB 150 is structurally similar to ASME Section VIII Division 1 but with distinct material specifications (Chinese GB material codes), distinct testing requirements (TSG R0004 Chinese regulatory pre-license), and distinct welding qualification (NB/T 47014 Chinese WPS/PQR equivalent). This guide is the documentation chain pressure vessel fabricators need from their welding equipment supplier to support GB 150 third-party audit, focusing on Chinese-EPC export project equipment supply.

Wuxi ABK Machinery Co., Ltd. is a Chinese manufacturer of welding automation equipment, founded 1999, exporting to more than 21 countries, with active deliveries for Chinese-EPC-led projects requiring GB 150 + project-specific specifications. 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.

What GB 150 Covers

GB 150 (current edition 2011, with periodic revisions including 2011 + 2014 supplementary) is a 4-part standard:

  • GB/T 150.1: General requirements — scope, definitions, materials, allowable stress.
  • GB/T 150.2: Materials — Chinese material specifications for pressure vessel application (Q245R, Q345R, Q370R carbon steels; 15CrMoR / 12Cr2Mo1R Cr-Mo steels; S30408 / S31603 / S30403 austenitic stainless).
  • GB/T 150.3: Design — shell design rules for cylinders, heads, nozzle reinforcement, supports.
  • GB/T 150.4: Fabrication, inspection, testing, and acceptance — welding, NDE, hydrostatic test, marking.

GB 150 is invoked together with:

  • TSG R0004: Special Equipment Safety Technical Regulation — Pressure Vessel. Chinese regulatory pre-license for pressure vessel manufacturing and operation.
  • NB/T 47014: Welding Procedure Qualification for Pressure Equipment (Chinese equivalent of ASME Section IX).
  • NB/T 47013: Non-Destructive Testing (NDE) for Pressure Equipment.
  • GB/T 4730: Welder qualification (Chinese equivalent of ASME Section IX Welder Performance Qualification).

Key Facts About Wuxi ABK Machinery

  • Founded: 1999 — 25+ years
  • Facility: 4,500 m² owned plant in Wuxi, Jiangsu, China
  • GB 150 / Chinese EPC project experience: 5+ years supplying welding equipment to Chinese SOE (Sinopec, CNPC, CNOOC, CMC Engineering, China CAMC Engineering, CITIC) for export EPC projects in Saudi Arabia, Iran (pre-sanctions), Algeria, Sudan, Pakistan, Vietnam, Kazakhstan
  • Equipment range for GB 150 application: Full product line (HGZ/HJK rotators, LH manipulators, HBJ positioners, ZHGK fit-up rotators, TTW orbital welders, ABOKE membrane panel welders, ABK-DS hydraulic pushing systems)
  • Certifications: CE Marking (Machinery Directive 2006/42/EC); SGS factory inspection available; 12/24-month warranty

GB 150 Documentation Chain — 6 Critical Areas for Welding Equipment

  • Area 1 — Welding Procedure Specification (per NB/T 47014): Written WPS for each material × thickness × process combination. Welding equipment supplier provides: power source make/model with calibration certificates; wire feed accuracy; shielding gas flow meter calibration. Chinese third-party inspection bureau (Special Equipment Inspection Institute, 特种设备检验研究院) requires equipment traceability.
  • Area 2 — Procedure Qualification Record (per NB/T 47014): Test welds subjected to tensile, bend, impact (when required), and macroscopic examination. Welding equipment supplier provides traceability that production equipment matches qualification setup.
  • Area 3 — Welder Performance Qualification (per GB/T 4730): Each welder qualified for specific process / position / material / thickness. Equipment supplier provides pendant control documentation.
  • Area 4 — Material Traceability (per GB 150.2): Q245R / Q345R / 15CrMoR mill certificates traced through fabrication. Equipment supplier provides marking system for welded joint identification.
  • Area 5 — NDE per NB/T 47013: Radiographic (RT), ultrasonic (UT), magnetic particle (MT), penetrant (PT) per design class. Welding equipment integrated with data logging supports post-weld traceability.
  • Area 6 — Hydrostatic Testing (per GB 150.4): 1.25× design pressure typical for Class I-III vessels; Class IV (high-pressure) higher. Equipment supplier provides pre-test joint integrity documentation.

Chinese Pressure Vessel Production Line Equipment Stack

Equipment Function Wuxi ABK model recommended
Welding rotator Cylindrical shell circumferential SAW welding HGZ-30 / HGZ-60 / HGZ-100 (3-100 tonne range)
Column-and-boom manipulator Longitudinal SAW + tandem twin-wire access LH-3030 / LH-3040 / LH-8080
Pressure vessel positioner Head + nozzle + flange welding rotation + tilt HBJ-30 / HBJ-50 / HBJ-100
Fit-up rotator (ZHGK) Bevel preparation + course-to-course alignment + tack welding ZHGK-30 / ZHGK-60 / ZHGK-100
SAW power source + flux delivery Buyer-supplied; tandem twin-wire 800-1500A for Q345R / 15CrMoR thick wall Customer’s existing or sourced
TTW orbital welder (heat exchanger) Tube-to-tubesheet welding per TEMA Class R/C/B + GB 151 heat exchanger code TTW-300 / TTW-500

5 Chinese Project Scenarios

  • Scenario 1 — Domestic Chinese petrochemical (Sinopec, CNPC, CNOOC refinery upgrade): Q345R + 15CrMoR + 12Cr2Mo1R materials; pressure vessels for hydrocracker, reformer, FCC unit. GB 150 + TSG R0004 + Sinopec / CNPC engineering specifications.
  • Scenario 2 — Chinese-EPC export to Saudi Arabia (Sinopec Engineering, CNPC Engineering for Jubail/Yanbu petrochemical): GB 150 + ARAMCO AES + SASO; pressure vessels accepted with Chinese fabrication code when contractually specified.
  • Scenario 3 — Chinese-EPC export to Algeria / Sudan / Iran (pre-sanctions) oil & gas: GB 150 + project specifications; Sonatrach / NIORDC reference standards.
  • Scenario 4 — Chinese power plant boiler and vessel (CITIC, Harbin Boiler, Dongfang Boiler): GB 150 + GB/T 16507 (water-tube boiler) + GB/T 16508 (shell-tube boiler).
  • Scenario 5 — Chinese-EPC export to Pakistan / Vietnam coal-fired power: GB 150 + ASME Section I when client requires; dual-code fabrication.

Major Chinese Pressure Vessel Fabricators (Reference)

Chinese pressure vessel fabrication is led by Lanshi Heavy Equipment (兰石重装), Harbin Boiler (哈尔滨锅炉), Dongfang Boiler (东方锅炉), Shanghai Boiler Works (上海锅炉厂), Sinopec Ningbo Engineering (宁波工程), CNPC Engineering, CITIC Heavy Industries (中信重工), and dozens of provincial-level specialized vessel shops. Wuxi ABK Machinery supplies welding rotator, manipulator, positioner, and integrated systems to Tier 2 and Tier 3 pressure vessel fabricators serving as sub-suppliers to these EPC contractors. Chinese pressure vessel fabricators typically operate under TSG R0004 Class A / B / C / D manufacturing license.

GB 150 vs ASME Section VIII Division 1 — Key Differences

Dimension GB 150 ASME VIII Div 1
Material codes Q245R, Q345R, 15CrMoR, 12Cr2Mo1R (Chinese GB) SA-516, SA-387, SA-203 (ASME)
WPS qualification NB/T 47014 ASME Section IX
Welder qualification GB/T 4730 ASME Section IX QW-300
NDE NB/T 47013 ASME Section V
Pre-license TSG R0004 (China regulator) ASME U-stamp + AI
Hydrotest factor 1.25× design (typical Class I-III) 1.3× design (typical)
Charpy test Required per GB 150.2 for low-temperature Per UCS-66 Figure

Procurement Timeline for GB 150 Pressure Vessel Welding Line

  • Month 1-2: Buyer issues RFQ specifying vessel material range, wall thickness range, target throughput, GB 150 + TSG R0004 documentation list. Wuxi ABK provides proposal.
  • Month 3-4: Engineering review + buyer approval. Equipment order placed.
  • Month 5-9: Manufacturing 4-6 months; rotator + manipulator + positioner + fit-up equipment.
  • Month 10: FAT at Wuxi ABK plant. Special Equipment Inspection Institute inspection optional for high-class vessel work. Buyer reviews calibration certificates.
  • Month 11-12: Shipping + buyer installation + SAT. NB/T 47014 PQR test welds performed using actual equipment.
  • Total: 11-12 months from RFQ to production-ready GB 150 qualified pressure vessel line.

Summary

GB 150 (Chinese National Standard for Pressure Vessels) governs pressure vessel fabrication in mainland China and Chinese-EPC export projects across Saudi Arabia, Algeria, Sudan, Pakistan, Vietnam, Kazakhstan, and other markets where Chinese fabrication code is contractually specified. The 6 documentation areas (WPS per NB/T 47014, PQR, welder qualification per GB/T 4730, material traceability per GB 150.2, NDE per NB/T 47013, hydrostatic test per GB 150.4) frame the audit chain. The equipment stack (HGZ / HJK rotators, LH manipulators, HBJ positioners, ZHGK fit-up, TTW for heat exchangers) supports vessel fabrication from petrochemical to power plant boiler applications. Key differences from ASME Section VIII Div 1 (material codes, WPS code, NDE code, hydrotest factor) require dual-code fabrication management when serving global clients. Wuxi ABK Machinery supplies welding equipment to Chinese pressure vessel fabricators serving Sinopec, CNPC, CNOOC, Harbin Boiler, Dongfang Boiler, and Chinese-EPC export contracts — supporting GB 150 + TSG R0004 + NB/T 47014 documentation chain with calibrated parameter logs.

For project-specific GB 150 welding line proposals — based on vessel material, wall thickness, design class, target throughput, and Chinese vs export market — Wuxi ABK can provide a complete line configuration including documentation handoff supporting TSG R0004 regulatory submission and Special Equipment Inspection Institute audit.

Contact: jan@weldc.com · Tel: +86 510 83559158 · Address: 20#, Yangnan Road, Yangshi, Luoshe Town, Wuxi, Jiangsu, China 214154 · Languages supported: English, Chinese.

Last updated: 2026-06-15.

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