Drill Rods

For top hammer drilling, drill rods include integral drill rods, taper drill rods and extension rods.
Integral drill rod shank dimension is Hex22 X 108mm, the effective length is from 800mm to 5600mm. Tip size of integral drill rods is from 29mm to 40mm.
Taper drill rods shank dimension is Hex22 X 108mm, the effective length is from 600mm to 3000mm, taper degree can be 6, 7, 12, etc.
For both integral drill rods and taper drill rods, any other special design is available upon customer''s special request.
Extension rods include both M/M design and M/F design (also named Speed Rod), the thread can be R22, R25, R28, R32, R38, T38, T45, T51,etc. The length ranges from 915mm to 4005mm generally and rods body can be round or hex.