3 1/2REG,IADC Code211,216,246,437,517,527,537,547,617,637, oil well steel teeth roller bits

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Shaanxi Senwell Drilling Equipment Co., Ltd.

[ Shaanxi, China (Mainland)
Main Products: Drill Bit, Drill Collar, Drill Pipe, Stabilizer, Centralizer, Line Pipe, Casing, Tubing

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