... , jet-grouting hole, large dia.pile with drilling BG-60 casing extractor is a special purpose equipment used for extracting the ... drilling smaller hole etc., and drilling with case. Technical Specifications Casing dia. (mm) 42~108~200 Max. pull force(kN)600Cylinder ... )280/(250)Total weight (Kg)600/(570) Drilling rig BG60 casing extractor