Active Member
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Address: No.12 Yangfang Village, Yangfang Town, Changping District, Beijing
Phone: 86-10-13911162325
Contact name:Mr. Richard
Beijing Guangying Construction Machinery Co.,Ltd |
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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 formations with high compressive strength, such as sandstone, limestone, dolomite, hard gypsum, marbel, etc.
5. competitive price
