DTH drill pipes play an important role in DTH drilling – regardless of application, rock type, hole depth or drill rig. The key features of a high quality drill pipes are durability,high hardness,stability,accuracy.

High quality pipe
Hardness and wear resistance combined alloy stell,supplied by national top level specialsteel manufacturer.(pipe thickness and material can be user’s choise).

No weak links
Traditionally, the threads and the joint between the tube and the end-pieces are vulnerable. To combat the problem, we’ve friction-welded the joints for maximum strength and heat-treated the end-pieces for optimum durability.

Stability and durability thread
Premium alloy steel made joints,strictly controlled heat treatment process and standard API thread processing technology;we pay high attention to all these ignored details to ensures a long service life,stability and thread durability.

Technical Data :
Diameter: 76mm, 89mm, 102mm, 114mm, 127mm, 140mm,
Length: 1000mm, 1500mm, 2000mm, 3000mm, 5000mm, 6000mm;
Thread: 2 3/8″ API REG, 2 7/8″ API REG, 3 1/2″ API REG, 4 1/2″ API REG, 2 3/8 API IF, 3 1/2 API IF