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Huashang Steel is a manufacturer and supplier of hydrogen service tubing, engineered for use across hydrogen production, storage, transportation, compression, liquefaction, and fueling systems. The tubing is designed for operation in high-pressure hydrogen environments, with compatibility for a range of hydrogen industry applications. This guide outlines product specifications, performance attributes, quality control processes, and use cases for commercial procurement teams and enterprise customers.
Hydrogen service tubing is high-purity stainless steel tubing built for hydrogen-related systems. It is designed to operate safely under high-pressure hydrogen environments, with resistance to hydrogen embrittlement, corrosion, fatigue, and pressure cycling.
Manufactured from 316L stainless steel, Inconel 625, Incoloy 825, and other hydrogen-compatible alloys, hydrogen service tubing is deployed in hydrogen refueling stations, electrolyzers, fuel cell systems, hydrogen liquefaction plants, hydrogen storage facilities, and green hydrogen projects worldwide.
Huashang Steel produces seamless and precision-drawn hydrogen tubing with BA (Bright Annealed) or EP (Electropolished) surfaces to support cleanliness, leak-tight performance, and long-term use in critical hydrogen applications.
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The tubing is available in multiple material grades to suit different operating conditions, each with corresponding UNS designations: 316L (S31603), 316L EP (S31603), Inconel 625 (N06625), Incoloy 825 (N08825), and Monel 400 (N04400).
Parameter | Range |
Material Grade | 316L, 316L EP, Inconel 625, Incoloy 825, Monel 400 |
UNS Number | S31603, N06625, N08825, N04400 |
Standard | ASTM A269, ASTM A213, ASTM A632, ASTM B444, ASTM B423 |
Manufacturing Process | Seamless / Cold Drawn/welded -cold Draw |
Outside Diameter | 1.0 mm – 60.3 mm |
Wall Thickness | 0.15 mm – 5.0 mm |
Length | Up to 12,000 mm |
Surface Finish | BA, EP, Pickled |
Pressure Rating | Up to 1,000 bar (depending on size/material) |
Temperature Range | -253°C to +600°C |
Certification | EN10204 3.1, PED 2014/68/EU, ISO 9001 |
Standard sizes are available in metric, instrumentation, and precision dimensions. Custom dimensions are available according to project drawings and hydrogen system requirements.
OD (mm) | WT (mm) |
3.0 | 0.5 |
4.0 | 0.5 |
6.0 | 1.0 |
8.0 | 1.0 |
10.0 | 1.0 |
12.0 | 1.2 |
14.0 | 1.5 |
16.0 | 1.5 |
20.0 | 2.0 |
25.0 | 2.0 |
Size |
1/8" |
1/4" |
3/8" |
1/2" |
5/8" |
3/4" |
1" |
OD (mm) | WT (mm) |
1.60 | 0.20 |
2.00 | 0.25 |
3.00 | 0.30 |
4.00 | 0.50 |
6.35 | 0.89 |
9.52 | 0.89 |
12.70 | 1.24 |
Optimized material chemistry and manufacturing processes minimize the risk of hydrogen-induced cracking and embrittlement.
Suitable for hydrogen systems operating from low pressure up to 1,000 bar and above, depending on material grade and wall thickness.
BA and EP finishes are available for high-purity hydrogen service requirements.
Precision manufacturing and smooth surface finishes support sealing performance in hydrogen applications.
The material provides resistance to moisture, condensate, and aggressive industrial environments.
Compatible with orbital welding and automated tube assembly systems.
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Processes include mill test certificate verification, heat number traceability, positive material identification (PMI), and chemical composition analysis.
Checks cover outside diameter measurement, wall thickness measurement, length inspection, straightness check, ovality measurement, and end preparation inspection.
Tests include tensile strength test, yield strength test, elongation test, flattening test, flaring test, reverse flattening test, and hardness test.
Testing includes 100% eddy current testing (ECT), ultrasonic testing (UT), liquid penetrant testing (PT), and visual surface inspection.
Surface inspection includes surface roughness measurement (Ra), internal cleanliness inspection, oil-free and grease-free verification, and end face burr inspection. Optional high-purity requirements include electropolished surface (EP) with Ra ≤ 0.50 μm, and Ra ≤ 0.25 μm upon request. Available documentation includes EN10204 3.1 material certificate, PMI report, mechanical test report, NDT report, pressure test report, and dimensional inspection report.
Used in water electrolysis systems, PEM electrolyzers, alkaline electrolyzers, and hydrogen purification systems.
Deployed in high-pressure hydrogen lines, hydrogen dispensers, hydrogen compressors, cascade storage systems, gaseous hydrogen storage, liquid hydrogen storage, tube trailer systems, and hydrogen cylinder filling systems.
Applied in cryogenic hydrogen transfer lines, liquid hydrogen piping, hydrogen cooling systems, fuel cell stacks, hydrogen supply manifolds, and fuel cell test platforms.
Suitable for green hydrogen facilities, wind-to-hydrogen projects, solar-to-hydrogen systems, liquid hydrogen rocket fuel systems, space propulsion systems, and cryogenic fuel transfer systems.
Available grades include 316L, 316L EP, Inconel 625, Incoloy 825, and Monel 400, each with corresponding UNS designations for full traceability.
Standard surface finishes include BA, EP, and pickled. Electropolished surfaces with Ra ≤ 0.50 μm are available, with Ra ≤ 0.25 μm available upon request for high-purity applications.
All orders include EN10204 3.1 material certification, with additional documentation such as PMI reports, mechanical test reports, and NDT reports available. The product complies with PED 2014/68/EU and ISO 9001 standards.
Yes, custom dimensions are available according to project drawings and specific hydrogen system requirements for industrial clients.
For industrial clients with specific project compliance needs, Huashang Steel provides full traceability for all hydrogen service tubing orders to support hydrogen infrastructure and energy project requirements.
