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Brief introduction of t51 top hammer drill bits: 1. application: this t51 top hammer drill bits for mining are widely used in metallurgy mine, geological exploration, water conservancy construction, electricity, traffic, tunnel, quarry, national defence stone project etc. 2. material: drill bits are made by high quality alloy steel bar and ...

Dec 13, 2018 · american/usa made drill bits list, 9 manufacturers & brands: american made drill bits, irwin tools, knkut, melin tool co., montana brand tools, norseman drill and tool, triumph twist drill, vix-bit, w.l. fuller inc., full details along with direct links to the makers & retailers.

Drill collar, drill pipe, kelly manufacturer / supplier in china, offering mini multi-function snow blower grass cutter, api gas drilling friction welding drill pipe drill tool 4 1/2" g105 or s135, api water well drilling friction welding drill tool 4 1/2" g105 or s135 and so on.

Wholesale drill bits wholesale drill bits come in two styles: surface treated bits provide high resistance to abrasion and help to reduce the tendency of soft materials to load on the drill. bright finish bits …

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