Cnc machining 1. Machining: 1) relevant machining methods: typical lathe/cnc/machining center 2) industry involved: locomotive 3) representative product: tube fittings/flange 4) manufacturer certification: iso9001 (2000) /ts16949 2. Welding: 1) welding process: spot(point)welding/carbon-dioxide(co2) arc welding/argon arc welding/hidden arc welding 2) material may involved: steel sheet/ seamless steel tube/ steel sheet with steel castings 3) industry involved: locomotiveíópower Transmission industryíómarine container transportationíóconstruction 4) representative product: semi-mounted container corner casting systemíóarcing ring