Surface Reaming Shell
It is set with natural or synthetic diamond, and it is used to couple the drill bit with the core barrel, NO, HQ, PQ reaming shell.
Its main function is to ream the hole to the correct constant specific diameter which ensures adequate clearance for the core barrel and sufficient clearance for the new bit which replaces an old one. It also acts as a stabilizer for drill bit.
Application; Diamond drill bit drill soft to hard rock, widely used in the drilling or geological exploration water conservancy and power engineering hydrological exploration and building construction etc. They can as well be used in fitting-up house, and installing heating or gas pipe for drilling holes in reinforced concrete.
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