Products Description
Our Advantages
1. Hydrogen Embrittlement Resistance
- Our pipes are made of austenitic stainless steel materials such as 316L and 304L, ensuring high toughness and ductility even in high-pressure hydrogen environments, reducing the risk of pipe cracking.
- The pipes undergo rigorous chemical composition testing to ensure that the material meets ASTM A312 standard specifications, and the Hydrogen Stainless Steel Pipeline is manufactured using a hot extrusion followed by a cold rolling process, resulting in hydrogen-induced cracking resistance that is approximately 30% higher than that of purely cold-rolled pipes.
2. Surface Treatment
- Our pipes offer two surface treatment options for the inner wall: electropolishing (EP) and mechanical polishing (BA). For high-purity hydrogen/electronic industry pipes, Ra≤0.2μm; for conventional hydrogen pipes, Ra≤0.4μm.
- The pipes undergo Ra surface roughness testing, visual inspection, microscopic inspection, and cleanliness testing to ensure that the pipes are suitable for hydrogen or semiconductor applications.
3. Customized Services
- TORICH provides customized size services, supporting imperial SCH series (SCH20/SCH40/SCH80/SCH160) and metric PN series (PN16/PN40/PN100), meeting the needs of hydrogen refueling stations, hydrogen production plants, liquid hydrogen storage and transportation, and other scenarios.
- Customizable options include inner wall EP/BA polishing, pipe body anti-corrosion coating, and beveling at both ends; suitable materials are provided according to the customer's actual application, including austenitic, ferritic, duplex stainless steel, and nickel alloys.
4. Excellent Weldability
- Hydrogen pipelines often require complex layouts or on-site installation. Our Hydrogen Stainless Steel Pipeline has reliable welding performance and is compatible with various welding processes such as TIG (GTAW), MIG (GMAW), and laser welding, facilitating on-site installation.
- Low-carbon materials such as 304L/316L prevent intergranular corrosion during welding, and the pipes undergo bright annealing treatment to reduce welding deformation and residual stress, lowering the risk of hydrogen embrittlement.
5. Quality Control
- From raw materials to finished products, our pipes undergo a series of rigorous tests, including dimensional inspection, eddy current testing, intergranular corrosion testing, and tensile testing, to ensure that the materials meet ASME B31.12 and ASTM A312 standard specifications. The piping materials undergo specialized testing for hydrogen applications to ensure they maintain mechanical integrity in low-temperature, high-pressure hydrogen environments, thereby guaranteeing the safe operation of hydrogen production, storage, and distribution systems.
application areas
1. Hydrogen Production Equipment
Used for transporting hydrogen from production facilities such as steam methane reformers (SMRs), electrolysis units, or biomass gasification systems.
2. Hydrogen Transmission and Distribution
Pipelines used to connect production sites, storage facilities, and end users.
3. Hydrogen Refueling Stations
Hydrogen refueling infrastructure for hydrogen-powered vehicles, including pipelines connecting storage tanks and refueling stations.
4. Chemical and Petrochemical Industries
Hydrogen supply lines used for hydrogenation, hydrocracking, and other chemical processes.
5. High-Purity Hydrogen Delivery Systems
Pipelines used to deliver ultra-pure hydrogen to industries such as semiconductors, pharmaceuticals, and electronics.
6. Hydrogen Storage Systems
Pipelines used to connect storage tanks, pressure vessels, and distribution systems.
Chemical Composition
| Element | C (%) | Mn (%) | Si (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|---|
| 304 | ≤0.08 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.030 | 18.0–20.0 | 8.0–10.5 | - |
| 304L | ≤0.03 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.030 | 18.0–20.0 | 8.0–12.0 | - |
| 316 | ≤0.08 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.030 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 |
| 316L | ≤0.03 | ≤2.00 | ≤1.00 | ≤0.045 | ≤0.030 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength 0.2% (MPa) | Elongation (%) | Hardness (HB Max) |
| 304 | ≥515 | ≥205 | ≥40 | ≤201 |
| 304L | ≥485 | ≥170 | ≥40 | ≤201 |
| 316 | ≥515 | ≥205 | ≥40 | ≤217 |
| 316L | ≥485 | ≥170 | ≥40 | ≤217 |
Possible Alternative Grades
| Alternative Grades | Reasons |
| Duplex Stainless Steel | It has higher strength than austenitic stainless steel and is used in high-pressure hydrogen pipelines, offshore hydrogen distribution and storage, etc. |
| Nickel-Based Alloys | It possesses excellent resistance to hydrogen embrittlement and high-temperature hydrogen environments, making it suitable for hydrogen pipelines in high-temperature hydrogen production processes. |
|
904L |
It exhibits excellent resistance to hydrogen embrittlement in high-pressure hydrogen environments, making it suitable for high-purity, high-pressure hydrogen transportation systems. |
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: What are the advantages of seamless pipes compared to welded pipes for hydrogen transportation?
A: Seamless pipes have uniform wall thickness and high mechanical strength, which reduces the risk of leakage compared to welded pipes, making them ideal for transporting high-pressure hydrogen.
Q: Do these pipes comply with international hydrogen standards?
A: Yes. Our pipes are manufactured to comply with the following standards: ASME B31.12, ISO 15649, and ASTM A312, making them suitable for global hydrogen energy applications, including refineries, chemical plants, and hydrogen refueling stations.
Q: What quality control measures are implemented?
A: Our hydrogen pipes undergo rigorous quality control, including: dimensional inspection of outer diameter, wall thickness, and straightness; non-destructive testing; hydrostatic pressure testing; and surface roughness and cleanliness inspection.
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