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How should flange manufacturers weld?

How should flange manufacturers weld?

Stainless steel flanges are widely used in oil, water and natural gas pipelines, which are mostly under certain pressure. This thin bellows is generally welded because it is too thin (about 0.2 mm) and difficult to weld. Welding methods include welding, brazing, and the like. one. Preparation before welding 1. Remove oil and other contaminants from the stainless steel corrugated flange. Assuming weld cracks and leaks, the original weld scars should be removed, the flanged straight pipe should be polished with metallic luster, the bellows straight pipe is too thin to be ground, ground and cleaned, and the bright light should be polished with a handcraft emery cloth. flange 2. Welding assembly: The equipment bay is 0, because the machining error is sometimes too large, and the welding is easy to burn through. The fusion treatment plan can be stacked on the surfacing layer of the flanged pipe straight pipe (generally 3~5Mm), and the processing is 0. ~0.05mm open space or hand ground. If the sleeve does not fit, rotate or straighten the OD of the small flanged pipe until the fit stops.

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