How should the flange cover that pairs with the pressure vessel flange NB/T47021-2012 be marked on the drawings?
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How are the flange covers for Type A flat welding flanges marked on the design drawings?
Flange covers that are to be used in conjunction with pressure vessel flanges according to NB/T47021-2012 should have information such as the standard, dimensions, grade, and material of the flange indicated on the design drawings; these details should be clearly marked and labeled on the drawings to facilitate production and assembly. The flange covers of Type A flat-weld flanges are typically specified in the design drawings with information such as the flange’s dimensions, thickness, material, model, and grade; these details are clearly marked and labeled on the drawings to facilitate production and assembly. At the same time, it is also necessary to indicate the requirements of relevant standards and specifications to ensure that the product complies with ** and industry standards. .
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It is necessary to provide a part drawing for the flange cover along with the corresponding technical requirements; the flange cover cannot be indicated directly in the detail column.