H22 tapered drill rod for rock drilling 

Product Description of H22 tapered drill rod for rock drilling  Drill rod is also called drill pipe, it is made by high quality carbide and 55 SiMnMo steel. Tapered drill rods are used in granite and marble quarry, gold mine, railway, tunnel, etc. for drilling. Product name Taper drill rods H22 Material High quality carbide and 55SiMnMo steel Process Forging Usage Rock drilling, coal mining and geological drilling Taper degree 4, 7, 11, 12 degree Length 400-6000mm Weight 3.03kg/m Specification H22*108mm Suit for bit Taper button bits, taper cross bits, taper chisel bits…

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