... pressure vessel, ship, food machinery, atomic energy etcApplicable scopeApply to tube diameter from16-300mm, tube-pipe,tube-elbow, Tube - ... fillingFunction and characteristicsWelding head have five specifications, according to dimensional condition and product range can choose one or ... arc stability, Weld bead molding beautiful,Welding torch using forced water cooling, keep long-term work,Nose can ...