... 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, connection rod, pinton pin, chain wheel, aluminum wheel, valve, rock arm shaft, small shaft and fork. Various ... tool and solid center bit.2.Welding of various hardware mechanical gadgets, silver soldering and brazing of metals of the ...