... : Copper Alloy. 2, weight:100g 3.earth rod clamp die casting,grounding rod copper clamp, copper saddle clamp1, Material: Copper Alloy ... .2, weight:100g3.earth rod clamp1) 15years' production experience ... green sand molding, and the resin sand molding. Various high quality castings are made of gray iron, ductile iron, ...