... rod of hydraulic drilling jumboR25,R28,R32,R35,T38,thread,hexagonal drilling rod,circular rod 25 square, ... medium and deep hole mining underground R32, T38, T45, T51 thread, circular rod, diameter 32mm, 39mm, ... drill rod of hydraulic drill vehicleT38, T45, T51 thread, circular rod, diameter 39mm, 46mm, 52mm, ... pipe (pilot drilling pipe)R32, T38, T45, T51,ST58 thread, the diameter of drilling pipe 46mm ...