... that will greatly IntroductionHLH type submerged arc welding machine applicable to Box-shaped column production line, landfill ... base, can replace the cantilever cubmerged arc welding machine, can choose a unipolar or multipolar welding, the ... ”T” type steel to design the replaceable welding gun parts and adopts the welding type of ship to ... section size(mm); Thickness:16-80 Gantry auto-welding machine