... is used in the pressure vessel, freezing equipment, construction of powerstation, metallurgical, engineering machinery, marine building, cladding ... -chemical industries.The welding center consists of the welding manipulator, auto-submerged arc weldingmachine (or CO2 shielded, TIG ... with the weldingtracking and monitoring system, arc oscillating unit, the control of arc length,the flux auto-feeding and ...