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직천공 비트 시스템

Top Hammer System

Order Numer Casing OD(mm) Ring Bit ID(mm) Ring Bit OD(mm) Pilot Bit OD(mm) Thread
60.5mm 60.5mm 47mm 70mm 50mm R25
76.3mm 76.3mm 60mm 88mm 65mm R32
89.1mm 89.1mm 68mm 98mm 78mm R32
144.3mm 114.3mm 94mm 125mm 100mm T38

DTH Hammer System

Order Numer Casing OD(mm) Ring Bit ID(mm) Ring Bit OD(mm) Pilot Bit OD(mm) Thread
89.1mm 89mm 56mm 98mm 77mm 2"
144.3mm 114.3mm 94mm 125mm 100mm 3" ~ 3 2/1"
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