DYWI Drill Hollow Bar System - DYWIDAG Systems
2019-4-30 · button bit, complete with side scallops for increased drilling efficiency 30° forward flush Uses: dense gravels, fractured ground, schists, rubble, broken rock UCS 80 MN/mm² Thread: R51, T76 Øs 115 mm, 130 mm Drop center Tungsten Carbide blade drill bit with hardened buttons in the center 30° forward flush and side flush
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