Best-Quality bauer kelly bar pins - Alibaba.com
Frictions Kelly bar Outer Diameter (mm) Elements Maximum drilling depth (m) Retracted length (m) 298 4 or 5 32.50 to 50 7.5 to 11.00 324 4 25.50 to 32.50 8.00 to 9.00 340 4 32 to 56 9.00 to 16.00 355 4 or 5 19 to 55 6.00 to 12.00 368 3 or 4 18 to 52 7.00 to 15.00 377 4 or 5 31 to 60 8.50 to 13.00 394 3 or 4 21 to 64 9.50 to 18.50 406 4 or 5 32 to 77 9.00 to 16.50 419 4 or 5 25.70 to 67.50 7.50 ...
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