18mm×17mm×5mm Tungsten Carbide Coal Mining Drill Bit with Hexagonal Connection for Strong Cutting Force Product Specifications Production Name 18mm......
PDC Two-Wing Bit with Diamond Composite Sheet for High Drilling Efficiency in Coal Mining The 30mm PDC two-wing anchor shank bit is a high-performance ...
Coal Mining Drill Bit Product Details Product Name: Coal Mining Drill Bit for High Performance Drilling Body Length: 87mm Steel Grade: 42CrMo Diameter...
Coal Mine 28 Inside Row Powder Bolt Bit No. 2 Bit A high-performance tool designed to elevate mining operations with superior drilling efficiency and ...