17 1/2 Inch 444.5mm Milled Tooth Tricone Rock
17 1/2 inch 444.5mm Milled tooth tricone rock roller cone bit for well drilling Cutting Structure The wear-resistance of teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for steel tooth bit.The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.
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