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