Questions regarding the acceptance of end caps
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The head is purchased from an external supplier; according to the material specifications, the steel plates are supplied in the normalized state, and heat treatment in the form of annealing is applied after shaping. What should be filled in the head quality inspection records regarding the heat treatment state of the materials at the time of supply and the heat treatment state used during use?
Does this fall under pressure vessels? @*lihuagong
Sent to the wrong place; will correct it next time: lol