19.05mm 15.88mm 高耐摩耗性PDCカッターダイヤモンドコンパクト（水井戸・石油掘削用）

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 ...