-Cut a Hole was 30 degrees angle MITRE grinding, grinding smooth, clean cut a hole in the side.Branch pipes are 30-45 degree angle taper grinding, cleaning the surface -Take the tube to branched tubes, the tube shut branches in the main tube 5-7 mm, proceed with calibration and South Korea attach at 3 points the way all around the tube.-Conduct welding work, the only welding process as described below.-Surface finishing, sanitary welds
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