Product Description We can produce all types of drilling rods such as HDD drilling rods, oil drilling rods, geological drilling rods, anchoring drilling rods and other special drilling rods, and trenchless special drilling tools such as pilot guide bits, swivels, ream bits, reducer unions,pneumatic pipe-rammer Technical parameter OD of Machine(mm): 260/190 Length of Machine(mm): 1390 Weight(kg): 320 Air Consumption(M3/Min): 3~8 Pressure of Air(MPa): 0.4~0.7 Diameter of Pipe laying(mm): 273\325\426