Using hand-controlled boxes,nose control box(welding control box)consititute nearly charged with remote control. 1.The device is the first choice for steel submerged arc welding equipment.2.The unique cross-section beams and columns desined to track 45 steel and welding to stress after treatment.3.By sharpening,grind type.light weight,high strength,good stability.4.Using a constant speed beams ...