Casing Ring Bits - Numa Hammers
Numa’s Casing Ring Bit System is the best method for simultaneous drilling and casing into bedrock. The system is capable of drilling 16″ to 48″ (406 – 1219 mm) diameter holes in both overburden and hard rock conditions using conventional or reverse circulation DTH hammers. Components include a pilot bit, casing shoe, and heavy-duty ring bit.
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