DH845A-A
孔径范围:φ90-140mm
钻杆规格:76*3000mm
冲击器规格:3"/3.5"/4"
DH612A-H
孔径范围:φ180-300mm
钻杆规格:89/102/114*3000mm
冲击器规格:6"/8"/10"/12"
DH947A-A
孔径范围:φ90-152mm
钻杆规格:76*4000mm
冲击器规格:3.5“ /4“ /5“
DH45A-H
孔径范围:φ90-125mm
钻杆规格:64/76*3000mm
冲击器规格:3“ / 4“
DH47A-H
孔径范围:φ90-185mm
钻杆规格:64/76/89*3000mm
冲击器规格:3“ /4“ /5“ /6“