... , standard part, fastener, fabricated mechanical part, bronze lock, rivet, steel pin and pin.2. Hot fitting refers to the connection ... Quench for machine tools, such as lathe deck and guide rail.5. Quench for various hardware metal parts and machined parts ... fitting, precision mold fitting, hardware handle, eggbeater, alloy steel and steel, steel and copper as well as copper and copper.3. Compound ...