... chain wheel, aluminum wheel, valve, rock arm shaft, semi drive shaft, small shaft and fork.3. Various electric tools, ... such as diamond tool, abrasive tool, drilling tool, alloy saw blade, hard alloy cutter, milling cutter, reamer, planning tool and solid center ... fitting, hardware handle, eggbeater, alloy steel and steel, steel and copper as well as copper and copper.3. Compound pot bottom welding is ...