Dao cắt PDC 19.05mm 15.88mm Kim cương cứng với khả năng chống mài mòn cao cho giếng nước và khoan dầu

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 ...