When do the welding structure, which part of the first welding, which part of the post-welding, or which of the welding seam welding first, which welding after the welding, that is, the welding sequence of the various welds.
The so-called correct welding sequence is to make the weldment evenly distributed. Since the weldment is heated evenly, the cooling is even, which reduces the deformation and stress.
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