What is the minimum distance between the structural members on the equipment and the cylinder welds?
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For example, what is the minimum distance between internal and external structural components such as partition plates and lifting lugs, and the longitudinal seam of the equipment main body? Is there any evidence?
The minimum spacing is around 5 mm! It depends on the processing precision!
You can refer to this article on the requirements for weld spacing on containers: https://mp.wei*n.qq.com/s/HcBcPF5RuEprybwihRwKOA
If the weld is covered, standard requirements dictate that 100% RT inspection be carried out on the covered weld. However, customer requirements vary; efforts should be made to avoid covering the weld. If it is unavoidable, it is best to first consult with the customer and have written documentation to support this decision.