I need help determining what type of pipe to use for transporting hydrogen
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Our company plans to build a pipeline for transporting natural gas and hydrogen. Since we have no prior experience in this area and could find little useful information on Baidu, we are seeking advice from everyone. What types of materials are generally used for pipelines designed to transport hydrogen? Additionally, what materials are available for pipelines used to transport natural gas mixed with hydrogen (HCNG)? Thank you.
Two types: one is to only supply hydrogen gas； Another option is a mixture of natural gas and hydrogen.
Based on the actual delivery pressure, temperature, and medium, check the pipeline grade; that way, the material will be determined
If the pressure and temperature are not high, carbon steel will suffice; for example, 20# steel as specified in GB/T8163 will work
First time encountering this; no effective answers seen. Please reply below
The answer on floor 5 makes sense: since the temperature is not high, 20# steel is sufficient. Hydrogen is a gaseous medium, and it can cause problems such as hydrogen embrittlement and hydrogen corrosion under the influence of temperature and pressure; in high-temperature environments, chromium-molybdenum steel should be used.
20# steel is generally sufficient; here we use PN50, 20#GB 9948
Steel for petroleum cracking oil GB9948