Active Member
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[China]
Address: Building 3, Rainbow road,No.188 ; Xishui;Hubei province
Contact name:Lucy
Hubei Superdrill Mechnical Equipment Co.,Ltd |
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RoBit-SOD-89-Symmetix Casing System by Top Hammer
Symmetric drilling systemSymmetix Casing System
Application Range1. Ring bit and casing shoe assembly is welded to casing prior to
drilling. Lock the assembly into pilot bit with hammer. The pilot
bit's upper shoulder engages the shoulder of the casing shoe.
3. On completion of drilling and casing, the drill string with
pilot bit is retrieved by a slight reverse rotation to unlock the
bayonet coupling. The ring bit stays in the hole, and can be
recovered only if the casing is retrieved.
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Drilling continues to the desired depth in the bedrock using a
conventional drilling.
