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Hebei Yichuan Drilling Equipment Manufacturing Co., Ltd

Province/State:hebei

Country/Region:china

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190.5MM TCI Tricone Rotary Rock Bit 7 1/2 Inch Roller Cone Drill Bit

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190MM TCI Tricone Rotary Rock Bit , 7 1/2 Inch Troller Cone Drill Bit Basical Parameter Bit Size 7 1/2"(190.5MM) IADC Code 537 Connection 4 1/2"API ...

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28mm core drill bit tricone rock roller drill bit drill rod 41mm

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