... and table ware, art ware, standard part, fastener, fabricated mechanical part, bronze lock, rivet, steel pin and pin.2. Hot ... motorcycle fittings, such as crankshaft, connecting rod, piston pin, chain wheel, aluminum wheel, valve, rock arm shaft, semi drive shaft, small shaft ... and solid center bit. 2. Welding of various hardware mechanical gadget: Silver soldering and brazing of metals of the same ...