High strength bolts, nuts, hot forging, gear, sprocket, crankshaft, spline shaft and other parts of the heat treatment; Valve welding, hot rolling straight shank twist drill, mining drill, pick, machine tools and other artifacts welding.Larger size of standard parts, fasteners, automotive, motorcycle parts, tools, gear, large parts of the heat pipe through molding; All kinds of hardware tools, machine guideway and other large parts quenching; Welding of large metal parts.