I would like to ask if the quality certificates of steel plates, steel pipes, and pipe fittings used in pressure-bearing special equipment must have T...
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I would like to ask if the quality certificates of steel plates, steel pipes, and pipe fittings used in pressure-bearing special equipment must have the TS mark, and which standard does it come from?
TSG 21-2016
I can't find any clause. What about the previous one?
There is no manufacturing license for steel plates. . . Steel pipes and steel pipe fittings are also included in the licensing requirements. .
Steel plate production units should no longer have licensing requirements. Pipes, forgings and pipe fittings in the manufacturing of pressure piping components require licensing requirements (pipes and forging flanges used on pressure vessels have no licensing requirements for production units)
It's not from a standard, it's a technical specification, it's mandatory, and it also needs to be stamped on the nameplate.