... medium ring cylinder,longitudinal seam welding HB welding positionermain purpose:HB series of all-position welding positioner is a kind of equipment ... in flux or not), metal arc welding (CO2/MAG/MIG welding), plasma welding, submerged arc welding machine power source to compose an automatic ... design, such as the level of turret, L-type variable-bit machines, double column heavy-duty positioner ect..