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marble mill tooth bit drilling

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Product Description: Milled Tooth Bit is a special type of drill bit designed for drilling medium hard formations with high compressive strength, such as abrasive shale, limestone, ...
Hebei, china
Verified
High Drillability Milled Tooth Drill Bit 6 3/4 Inch IADC 537 For Hard Gypsum / Marble Basical Parameter Bit Size 6 3/4"(171.4MM) IADC Code 537 Connection 3 1/2"API reg pin Nozzle ...
Hebei, china
Verified
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