Are there any situations where non-metallic pipes or steel-lined pipes need to be classified as pressure pipes?
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Are there any situations where non-metallic pipes or steel-lined pipes need to be classified as pressure pipes?
This post was last edited by henglinkou on 2020-6-12 at 10:35. Whether it is a pressure pipeline has nothing to do with the material of the pipe
This has its scope of application; it does not include non-metallic pipes
It has nothing to do with the material; it depends on pressure, temperature, and the medium. However, there are many small pipes in the lined pipeline.
This is the correct answer; pressure pipelines include non-metallic pipelines, as long as the conditions are met!
It has nothing to do with the material; as long as the pressure and temperature meet the requirements, it’s fine
Then why are those lined pipes classified as pressure pipes of a certain grade?
Does \"including its lining layer\" here refer to steel-lined pipes?
Category GB includes non-metallic pressure pipelines; there is currently no standard for category GC
It should be in accordance with the definition of pressure pipelines provided in the \"Catalogue of Special Equipment\" formulated under the \"Special Equipment Safety Law\"; this definition does not impose any restrictions on the material of the pipelines. The law ranks second only to the constitution; any other regulations that conflict with it are invalid, and it can be said that such pipelines are not subject to the regulation of those regulations.