... (1-20KHz) Main features 1.Adopt IGBT technology, with all-round protective function over voltage protect, lack of water protect, over ... tools, such as diamond tool, abrasive tool, drilling tool, alloy saw blade, hard alloy cutter, milling cutter, reamer, planning tool and ... pot bottom welding is mainly applicable to the braze welding circular, square as well as other irregular plain pot bottom. ...