Regarding the materials for compressed natural gas pipelines
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Compressed natural gas has a pressure of 25 MPa; in some cases, the design pressure is set at 32 MPa. With such high pressures, what material should be used for the pipelines?
Let tI represent the pressure, which is equal to T or higher than 4 MPa for the natural gas pipelines F. These pipelines shall comply with the current standards such as \"Stainless Steel Welded Pipes for Fluid Transport\" CB/T 14976, as well as the relevant regulations for \"Seamless Pipes for High-Pressure Boilers\" HS31U.
It seems that temperature has a significant impact on the choice of material; compressed natural gas is certainly not very hot, so better low-carbon steel would work fine
It has no direct relation to pressure; just choose a higher level
The conditions mentioned by the poster can be met by choosing a high-pressure boiler or carbon steel pipes for cracking