... Weight range from 0.5 to 8000kg Process sand casting,investment casting,machining Sand casting1.Material: gray iron, ductile iron, ... sand casting,investment casting,machining4.Valve parts and components: valve body, disc, safety valve spring follower, gear housing, manual housing, worm gear ... collet, retainer bearing, bearing cap, head hub, gear box, couplingOur advantages: 1. 8000 tons of machined ...