Selection of welding sequence
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This post was last edited by jacques0920 on 2015-9-9 16:38: “For double-sided welding (large pipes), the weld seams on the inner wall that are in contact with corrosive substances should be welded last. ” I have a few questions: 1. How is double-sided welding achieved in pipes? 2. How is it possible to weld the final bead on the inner wall? 3. How many weld layers are generally allowed for large pipes? I’ve never seen welded pipes; please give me some advice.
Double-sided welding (large pipes): The weld bead on the inner wall that is in contact with corrosive media should be welded last. Where was this sentence taken from? 1. How can double-sided welding be achieved in pipes? Double-sided welding, as the name implies, involves welding from two sides; in the case of pipes, this means both the inside and outside of the pipe. The pipe must be large enough, or have enough sections – this sufficiency is necessary to allow welders or equipment to enter. 2. How is it possible to weld the final bead on the inner wall? Weld the outside first, then the inside. 3. How many weld layers are generally allowed for large pipes? The layers of the weld are determined based on the welding process (welding method, diameter of welding materials, etc.), weld thickness, and other factors. You’re asking in the wrong direction. It has nothing to do with whether it’s a large tube or a small tube.