... of automobile parts,motorcycle parts,hardware tools,gears,chaim wheels,and other machine attachments quenching for parts or whole body. ... part or whole though heating,twist drills heating upsetting and forging.Braze weldingMany lathe tool,drill bit,knives,saw ... pipe,copper pipesbraze welding.MeltingGold,silver,copper,steel,aluminous and other metals vacuum smelting,foudry,or evaporating plating.Other ...