Overburden Drilling Equipment
                              Concentric Casing System with Blocks
                              Concentric Casing System consist of pilot bit and blocks. It is suitable...
                              Eccentric(ODEX) Casing System
                              Eccentric(ODEX) Casing System consist of Guide device, Pilot bit, Reamer...
                              Symmetric Casing System with Ring bits
                              Symmetric Casing System consist of pilot bit and ring bit. It is suitabl...
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