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I would like to ask about the meaning of the abbreviations for pipe materials

2016-03-11View Original

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I am looking at a pipeline flow diagram of a foreign company. The meaning of the material abbreviations above is unclear. So I’m coming here to ask the experts for advice. In CA-25-D16PS-GC11.001, I guess PS is an abbreviation for plain steel. The material of ES in NI-40-D16ES-GC11.001, JS in CW-500-D16JS-GD11.001, and FS in GN-50-D16FS-GD11.010 is unknown. Additionally, the oxygen pipeline is denoted in a format similar to OX-50-S25XS-GD11.114. What does S25XS in it mean? Does anyone knowledgeable know about this?
Reply #22016-03-11
Go to the first page of the project schematic diagram, the P&ID Legend.
Reply #32016-03-12
It seems quite complex; one can only rely on the instructions

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