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Changsha Chaojingang machinery manufacturing CO., Ltd

City:changsha

Province/State:hunan

Country/Region:china

Contact Person:MsXie

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5 1/8 Inch 130mm DHD340 drill Bits with Guage 816mm Center 814mm for hard rock

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5 1/8 Inch 130mm DHD340 drill Bits with Guage 8*16mm Center 8*14mm for hard rock DTH bits face desigh and selection: Description 1. Rapid drilling ...

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drill bit size 7 8 drill bit 28mm drill bit

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