扩孔钻和锥管丝锥复合刀具
combined taper pipe tap and core drill
硬质合金焊接式锥柄扩孔钻
carbide welded taper shank core drill
直锥柄扩孔钻
straight taper shank core drill
锥柄扩孔钻
taper shank core drill
Core drills with Morse taper shanks
锥柄三刃扩孔钻
taper shank three-edge hole-dilating drill
钻孔扩孔
bore hole drilling and enlarging
250B轴承环扩孔机
250B bearing ring rolling machine
冲孔与扩孔
punching and hole-expanding
大直径挖孔扩底灌注桩
large-diameter cast-in-situ piles with enlarged ba
带扩孔端的抗拔桩
uplift pile with hole expansion end
定向钻扩孔
reaming operation in directional drilling
多节扩孔桩
multi-under-reamed bored piles