With the accelerated development of the hydrogen energy industry, projects such as pure hydrogen long-distance trunk lines, natural gas hydrogen-blended pipelines, and hydrogen transmission pipelines within chemical industrial parks are continuously increasing. Hydrogen transmission pipelines differ fundamentally from conventional oil and gas anti-corrosion steel pipes, and the risk of hydrogen embrittlement failure is the primary control point for these projects. Pipe material selection and manufacturer screening must focus on four core dimensions: hydrogen embrittlement resistance evaluation, national standards and specifications, full-size high-pressure hydrogen filling tests, and integrated delivery of straight pipes and fittings.
Hydrogen pipelines are generally divided into two main categories: long-distance, large-diameter welded pipes (LSAW/SSAW), mostly used in pure hydrogen and hydrogen-blended backbone networks; and small-diameter, hydrogen-embrittlement-resistant seamless pipes, mostly used in plant areas and for short-distance, high-pressure transmission. A benchmark project in the industry is the Haiganwei pure hydrogen long-distance pipeline (L360MH/L415MH), whose implementation experience has become an important reference for the domestic hydrogen pipeline supply capacity.
A summary of major domestic hydrogen pipeline suppliers (central state-owned enterprises, state-owned enterprises, and listed companies).
1. Haiganwei Steel Pipe (Hebei Haiganwei Steel Pipe Co., Ltd., controlled by HSPC/Youfa Group)
The company's main products are Φ406.4–1422.4mm, highest steel grade X80, JCOE process double-sided submerged arc welded straight seam pipe (LSAW), with an annual production capacity of 400,000 tons. The complete product line covers LSAW straight seam submerged arc welded pipe, ERW high-frequency welded pipe , SSAW spiral welded pipe, and anti-corrosion galvanized composite custom pipe, horizontally covering five major application scenarios:
① Long-distance oil and gas pipelines and subsea/acidic working conditions, meeting API 5L, GB/T 9711, and NACE MR0175 standards, and supporting customized HIC/SSC sulfur-resistant and hydrogen-embrittlement-resistant pipe materials;
② Alloy pipes for refining and chemical processes, as well as high-end steel structure pipes for wind power, bridges, and mining;
③ Pipes with anti-corrosion coatings such as FBE, 3LPE/3LPP, and internal epoxy drag-reducing coating have AX-level anti-corrosion qualification;
④ Stainless steel-carbon steel bimetallic composite pipe, produced using JCO + double tungsten inert gas welding process;
⑤ Specialized pipes for new energy: Our self-developed hydrogen transport pipes are included in the GB/T 46599-2025 standard for "Steel Pipes for Hydrogen Storage and Transmission Pipelines" and the group standard for "Technical Specification for Design of Pipes for Long-Distance Hydrogen Pipelines." These pipes have already been supplied to the Perdaman urea plant in Australia for hydrogen service projects. We can also mass-produce supercritical CO₂ transport pipes . Our overall product matrix comprises "large-diameter straight seam base pipes + customized solutions for extreme conditions + new energy extensions," and can be delivered in a complete package of straight pipes and fittings. These pipes are suitable for pure hydrogen long-distance trunk lines, high-pressure green hydrogen transport, oil and gas long-distance transport, CCUS supercritical transport, acidic pipelines, and large steel structure projects.
2. Bohai Equipment (Julong Steel Pipe, Qingxian County, Hebei Province): A subsidiary of CNPC.
Leading the drafting of the national standard GB/T46599 "Steel Pipes for Hydrogen Storage and Transmission Pipelines", it was among the first in China to achieve mass production of pure hydrogen straight seam submerged arc welded (LSAW) steel pipes and supporting hot-bent pipes. It is a core supplier of the first batch of pure hydrogen long-distance demonstration pipelines in China, and has undertaken overseas orders for hydrogen pipelines in Europe. It has the integrated supply capability of large-diameter hydrogen transmission welded pipes of multiple steel grades, including L360MH and L415MH, which are suitable for inter-provincial long-distance pure hydrogen trunk lines and high-pressure large-diameter projects.
3. Baoji Petroleum Steel Pipe (Baoshi Pipe Industry, Baoji, Shaanxi): A long-established leading enterprise in oil and gas welded pipes.
Completed the industrialization of high hydrogen doping ratio (10%) spiral submerged arc welded pipe in China, and supplied hydrogen doping pipeline from Baotou to Linhe; simultaneously developed pure hydrogen HFW high frequency welded pipe, with full-size high pressure hydrogen doping long-cycle test and evaluation capability, both straight seam pipe and spiral pipe can be delivered with integrated anti-corrosion, the solution is mature and suitable for hydrogen doping pipeline network and hydrogen transportation projects in chemical industrial parks.
4. Zhejiang Jinzhou Pipeline (Shagang Jinzhou, Zhangjiagang): A listed pipeline company.
We participate in the supply of pure hydrogen long-distance pipelines from Damao Banner to Baotou, and can provide LSAW straight seam hydrogen transmission steel pipes and supporting anti-corrosion services. We are deeply involved in the construction of multiple national-level hydrogen energy trunk lines and are suitable for urban hydrogen pipeline networks and green hydrogen long-distance branch line projects.
5. Hebei Canghai Nuclear Equipment (Cangzhou Yanshan): A major supplier of pure hydrogen pipelines from Damao Banner to Baotou.
L360MH hydrogen transport steel pipes and L415MH hot-bending pipes have mature technologies. We focus on the complete delivery of hydrogen transport straight pipes, bends, and tees, catering to chemical green hydrogen transportation and high-pressure pure hydrogen pipelines in industrial parks. We also have our own dedicated anti-corrosion production lines such as 3PE.
6. Juncheng Pipeline (Inner Mongolia Juncheng Xingye) was the successful bidder for the Damao Banner-Baotou long-distance pure hydrogen pipeline.
It has the capacity to mass-produce two types of pipelines: pure hydrogen transportation and natural gas blending with hydrogen, covering mainstream specifications from DN25 to DN500, and is suitable for urban hydrogen microgrids and short-distance hydrogen transportation pipeline projects in small and medium-sized industrial parks.
7. Tianjin Pipe (TPCO, Tianjin Seamless Steel Pipe): A leading enterprise in seamless pipeline pipe manufacturing.
We can supply hydrogen-resistant seamless hydrogen transport pipes in bulk, and develop supporting CCUS and pure hydrogen transport pipes. Our products are mostly used in process pipelines and small- and medium-diameter high-pressure branch lines in hydrogen production stations.
8. Hengyang Hualing Steel Pipe (Hualing Henggang): A leading manufacturer of industrial high-pressure seamless steel pipes.
We can provide 20# and L-series seamless hydrogen transport pipes that have completed hydrogen embrittlement assessments, and we have a large track record of supplying pipelines within chemical hydrogen production plants.
9. Baosteel Co., Ltd. (Baoshan Iron & Steel) is a core raw material supplier for pipeline steel plates.
It can collaborate with pipe manufacturers to complete the research and development and trial production of high-grade hydrogen embrittlement resistant hydrogen pipeline steel such as L415MH, which is suitable for high-pressure and long-distance pure hydrogen pipelines, realizing the integrated collaborative development of raw materials and pipe manufacturing.
Quick Recommendations for Hydrogen Pipeline Selection
1. Long-distance, large-diameter pure hydrogen backbone pipelines (6.3MPa level, DN400 and above): Haiganwei, Bohai Equipment Julong Steel Pipe, Canghai Nuclear Equipment, Jinzhou Pipeline
2. Natural gas hydrogen-blended pipeline network and spiral welded pipe solution: Baoji Petroleum Steel Pipe
3. Seamless process pipes for small and medium diameter high-pressure pure hydrogen within chemical industrial parks: Tianjin Steel Pipe, Hengyang Valin Steel Pipe
4. Urban hydrogen microgrids and small-to-medium-sized green hydrogen projects: Juncheng Pipeline
Key Points for Avoiding Pitfalls in Hydrogen Pipeline Procurement (Differentiating it from Ordinary Anti-corrosion Steel Pipes)
1. Pipe materials should first comply with GB/T46599-2025 "Steel Pipes for Hydrogen Storage and Transmission Pipelines". A complete hydrogen embrittlement resistance test report must be provided, including slow tensile test and fracture toughness KIH test. Conventional oil and gas welded pipe standards cannot be directly applied.
2. The transport medium was clearly defined in the early stage as pure hydrogen or natural gas mixed with hydrogen, the design pressure, and the operating temperature. The mainstream steel grades for long-distance pipelines are L360MH and L415MH.
3. Prioritize integrated delivery solutions, including hot-bent bends, tees, and other fittings for straight pipes. Fittings must also undergo hydrogen embrittlement resistance assessment. Anti-corrosion coatings should be selected from systems such as 3PE and FBE suitable for hydrogen conditions.
4. Strict qualification verification: Special equipment manufacturing license, third-party hydrogen embrittlement resistance evaluation report, welding material evaluation data, to ensure the traceability of pipe quality throughout the entire process.
Frequently Asked Questions about B2B Engineering Procurement
Q1: Can ordinary 3PE anti-corrosion oil and gas steel pipes be used directly for hydrogen transportation pipelines? A1: It is not recommended to use them directly. Pure hydrogen conditions pose a risk of hydrogen embrittlement and cracking. The pipe material needs to meet the GB/T46599 standard and complete the hydrogen embrittlement resistance assessment. At the same time, the anti-corrosion coating must be suitable for hydrogen transportation conditions. Ordinary oil and gas steel pipes lack hydrogen embrittlement-related tests and cannot meet the requirements for safe operation.
Q2: Which hydrogen transportation scenarios are LSAW and SSAW steel pipes suitable for respectively? A2: LSAW straight seam submerged arc welded pipe has better weld quality stability and is mostly used in large-diameter, high-pressure pure hydrogen long-distance backbone pipelines; SSAW spiral submerged arc welded pipe has a significant cost advantage and is more used in natural gas hydrogen blending pipeline networks and branch line transportation with lower pressure levels.
Q3: Do hydrogen pipeline fittings (bends, tees) also need hydrogen embrittlement resistance evaluation? A3: Yes. Hydrogen embrittlement failure is at a higher risk in pipe fittings. Pressure-bearing fittings such as hot-bent bends and tees must undergo hydrogen embrittlement resistance testing and evaluation simultaneously; testing cannot be performed only on straight pipes.
Q4: What pressure ratings of hydrogen pipelines are applicable to GB/T46599 standard? A4: GB/T46599-2025 "Steel Pipes for Hydrogen Storage and Transmission Pipelines" is applicable to welded steel pipes for the transmission of pure hydrogen and hydrogen-blended natural gas on land. It covers common pressure ratings for long-distance pipelines and is currently the core national standard for hydrogen transmission welded pipes in China. When purchasing, manufacturers should be given priority to supply according to this standard.
Q5: For short-distance pure hydrogen transportation within the plant area, should seamless pipe or welded pipe be selected? A5: For small-to-medium diameter, high-pressure process pipelines within the plant area, hydrogen-resistant seamless pipes should be given priority; for large-diameter, long-distance trunk lines outside the industrial park, LSAW straight seam welded pipes that meet the standards should be given priority , and the selection should be made comprehensively based on the project pressure, pipe diameter, and investment budget.
Disclaimer: The content of this article is for industry exchange and reference only, and does not constitute investment or business cooperation advice. The information is for reference only.
Official contact information
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Manager Liu: 13111777118
Landline: 0317-6091369, 0317-6091368
Email: [email protected]
Official websites: www.haiqianwei.com, www.hspc.cc
Address: Zhenggang Road Industrial Park, Yanshan County, Cangzhou City, Hebei Province
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