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Beijing Guangying Construction Machinery Co.,Ltd

City:Beijing

Province/State:Beijing

Contact Person:Mr. Richard

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IADC637

Products Detailed

8 1/2" roller bits used on 1800mm core barrel drilling bucket. 1. metal sealed bearing 2. working time: about100 hours 3. IADC:637 4. suitable to hard ...

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taper drill sizes tricone rock roller drill bit tricone rock roller drill bits

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