Qingdao Tianwei Casting (located in Qingdao,Shandong,China) is very specialized in investment casting,precision casting and sand casting to produce all types of engineering/metal parts. We can cast more than 100 kinds of alloys. As for investment casting,we have two production lines: silica-gel and water-glass so that we can meet different demand from different customers. Investment casting(lost-wax investment casting):stainless steel,carbon steel,alloy steel,duplex stainless steel,iron casting. ISO9001:2008 certificated. Sand casting: stainless steel 304,316;duplex stainless steel 17-4ph,630;heat-resisting steel,high alloy steel,duplex stainless steel,super alloy. Key words:automoible,motocycle/bicycle/truck/car part,excavator pump,water pump,oil pump,pump(housing)body,pump cover,valve(housing) body ,overflow valve,valve cover,air cylinder;vacuum pump,sewage pump case,axial flow pump; impeller(Primary,HP),draught fan case;tank cap,compressor case,double suction impeller,drive ring,engine component;pipe fitting,flange,bearing,gear,gearbox,bolt socket,bracket,tee coupling,fork,knuckle,fuel pipe,fuel filler,connection shaft,housing,mounting bracket,steel elbow,guide vane,golf putt head,union M/F,hexagon cap,hexagon plug,socket bended,coupling,hexagon nipple,square plug,reducing tee,hexagon bushing,cross pipe,reducing elbow,hose nipple;austenitic stainless steel,martensitic stainless steel. Machining: lathing/turning,milling,drilling,grinding,tapping threads,five-axis CNC machining;CMM inspection; spectrometer for checking chemical compositions; mechanical properties testing; pressure-testing under water;anti-rust oil;salt spray test.