The best way to weld steel pipe

Welding seamless steel pipe first clean up the welding of oil, paint, water, rust, etc., and then according to the wall thick groove, thick to open some large, thin to open a small (angle grinder), and then is the goods Of the gap, usually the electrode or wire diameter of 1 - 1.5 times, if you do not care to open a large groove can be appropriate to stay smaller. Point welding at least three points, generally four points better work.
When welding seamless steel pipe should be half of the welding, the starting point is better than the bottom of a centimeter or so, so from the opposite good joints. If the steel pipe wall thickness, it should be layered, at least two layers, the first layer of the whole circle welding can be welded second layer.

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