NQ drill rods(O.D.69.9mm, I.D.60.3mm) are made with quality geological steel material to push NQ core bits to core rock sample.

HQ drill rods(O.D.88.9mm, I.D.77.8mm) are made with quality alloy steel material and advanced thread heating treatment.

PQ drill rods(O.D.114.3mm, I.D.101.6mm) are equipped to PQ core bits and core barrels to drill hole with diameter 122.3mm.

SW casing rods(O.D.168.3mm, I.D. 152.4mm) are made with quality alloy steel and advanced welding technology.

NW casings rods with outer diameter 88.9mm and inner diameter 76.2mm, are produced with quality alloy steel material.

AW drill rods are generally connected with adapters, while we also produce drill rods directly connected without adapters.