MATTIAS REHNSTROMJIMMY CARLSSONJ Carlsson, G Stenberg, M. Rehnstrom , Atlas Copco Secoroc, Drill bit for a rock drilling tool with increased toughness and method for increasing the toughness of such drill bits, 2009, Patent US8720613 B2
Percussive drill bit for rock drilling and method for the manufacture of such a drill bit A drill bit for percussive rock drilling of the type that comprises a front head and a tubular skirt, which extends rearward from the head to a rear, ring-shaped end and includes an internal thread ...
Durable drill bits 46mm cross drill bits for rock drilling, You can get more details about Durable drill bits 46mm cross drill bits for rock drilling from mobile site on Alibaba.com
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