Heavy Weight Drill Pipe (HWDP) is an intermediate weight drill stem component which is used in conjunction with the drill pipes and drill collars. TIANHE HWDP is available in standard, spiral and nonmagnetic designs. In some applications, heavy-weight drill pipes also can be used instead of the drill collars.

TIANHE Non-magnetic drill collars are made from non-magneticsteel bars with low-strength by combining a proper chemical analysis and rotary hammer forging process with low magnetic permeability and excellent machinability. It will not interfere with the specialized directional equipment but rather will enhance the performance of the drilling operation.

Spiral Grooving In order to reduce differential pressure sticking, the surface of drill collars can be spiral-grooved.

Drill Collar is the basic component in the BHA which provides weight on the bit for drilling and keeps the drill string in tension.

TIANHE provides a complete line of drill string products, including a full range of friction welded drill pipes in nominal sizes from 2-3/8” to 6-5/8” and in a wide range of wall thicknesses. TIANHE drill pipe adopts a strict quality control regimen to ensure total quality control from initial material qualification, in-process inspection to final outgoing quality inspection. We ensure that each joint of drill pipe meets your needs for reliability, durability and performance.