... , kitchen and table ware, art ware, standard part, fastener, fabricated mechanical part, bronze lock, rivet, and steel pin.2. Hot fitting ... and guide rail.5. Quench for various hardware metal parts and machined parts, such as shaft, gear (chain wheel), cam, chuck and ... tool and solid center bit.2. Welding of various hardware mechanical parts: Silver soldering and brazing of metals of the same variety ...