... tube, sealing of aluminum foil (tooth paste peel), motor rotor and sealing of tubular electric heating element.3. Smelting mainly aims ... pin, chain wheel, aluminum wheel, valve, rock arm shaft, semi drive shaft, small shaft and fork.3. Various electric tools, such as gear ... for various hardware metal parts and machined parts, such as shaft, gear (chain wheel), cam, chuck and clamp etc.6. Quench for ...