What type of material should be used for pipes in low-temperature media?
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What type of pipeline should be used for transporting cryogenic media such as liquid nitrogen?
By the way, the design pressure for the pipeline is 0.9 MPa. I hope those with more experience can offer some advice – are there any relevant specifications or standards? Thank you 1# weilinrui
It depends on the temperature; for the propylene pipelines in my facility, 0Cr18Ni9 is chosen. If the temperature is not low, 16Mn or 3.5Ni can be used
Reference can be made to Mr. Yang Qingchao’s article \"Selection and Characteristics of Low-Temperature Materials in Ethylene Plants\"
For the situation you mentioned, pipes made of stainless steel or aluminum alloy can be used; they can withstand low temperatures of up to -200 degrees Celsius.
316L stainless steel can withstand low temperatures of -200 degrees.
Thank you to all the experts for their guidance! Liquid nitrogen is at around -160 degrees. Considering cost and safety, could you recommend some types of tubes? The pipe diameter is initially set at 6 inches. I majored in electrical engineering and know nothing about piping; I would appreciate it if some experts could give me some guidance. Thank you!
Common materials: 5052, 5083, 304; those with higher costs are: 304L, 316L
Stainless steel or aluminum can meet the requirements
There seem to be specific standards for steels used at low temperatures