19.05mm 15.88mm PDC 컷어 다이아몬드 컴팩트 물 우물 및 석유 굴착을위한 높은 마모 저항

19.05mm 15.88mm Diamond PDC Cutter Bit Polycrystalline Diamond Compact For Water Wells Polycrystalline Diamond Compact for Oil Drilling and Water Wells Product Introduction Xing tong PDC used as drills is made of special high-quality diamond micro-powder developed by our company, produced by ...