ISO9001 11 Inch Mill Tooth Tricone Bit With Tungsten Carbide Blade
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TCI Trident Drill/Roller Cone Rotary Tool Rock Drill Bit Tungsten Carbide Blade Introduction Hard faced bearing surface. The tapered bearing is embedded with antifriction alloy and then silver plated. Improved wear resistance and anti bite resistance of ......
Hejian Sanlong Petroleum Machinery Co., Ltd.
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