... ring cylinder,longitudinal seam welding HB welding positionermain purpose:HB series of all-position welding positioner is a kind ... equipped with welding machine (fill in flux or not), metal arc welding (CO2/MAG/MIG welding), plasma welding, submerged arc welding machine power ... change workpieces position easily. It mainly used for welding parts conducting, surfacing and cutting. It cancompletes large ...