Problems with atmospheric pressure vessels.
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It is a rectangular pressure tank with a length of over 5000, a height of over 3000, and a width of over 3000. Both the bottom plate and the side walls require joint assembly; it is supported by angle steel on the outside, and there are tie rods on the cover plate. Are all these joints classified as Class A welds? How is the manufacturing process for this device developed? Sometimes even the simple things are beyond one’s capability; before, it was all about containers and heat exchangers.
In accordance with Chapter 8 of NB/T47003.1 \"Welded Steel Pressure Vessels at Atmospheric Pressure\" – Rectangular Vessels
Welds in atmospheric pressure vessels are not classified as Type A or Type B
For atmospheric pressure square water tanks, just provide a design drawing with the weld lines indicated; there is no need to include a manufacturing process. If the company requires it, then provide only the assembly sequence
There are no strict requirements either; I’m curious to know how other companies handle it.
If there are samples, you can refer to them
Atmospheric pressure vessels are not classified into ABCDE categories based on welds; 10% radiographic or ultrasonic non-destructive testing is required for butt weld joints.