... .ore mining,many types 3.good price and high quality 4. ISO9001 5. Export to many countries We ... Integral Drill Rods)Shank H22x108mm, H19x108mm, standard hex, Bit diameters include 20-42mm.2. Tapered drilling tools ... and Conical.(Threaded R32, T38, T45,T51, bit diameter: 45mm-127mm);Couplings sleeves-manufactured with a ... : 19.4mm, 25mm,30mm,33mm,38mm,etc.8. Blast furnace tap hole drill tools.(Rod, Cross ...