... 2.Orbit tube automatic weld machine 3.20 year experience 4.PLC control,easy operate 5.Price advantage KHGK Orbit pipe to pipe ... tube diameter from16mm-300mm, tube-pipe,tube-elbow,the tube - flanges, tube-valves, carbon steel, alloy steel ,stainless steel filling wire or not filling ... welding standard, each group of welding scope can divide 1~2 section, input is simple, and not need professional basis ...