Teda Special Pipe Co Ltd provides a wide range of slick, spiral and non-magnetic drill collars. 3 1/8" to 14" OD.
Drill collars are designed to provide a guiding and stabilizing force in drilling activity, and keep the entire drill string on target. Teda Special Pipe Co Ltd offers finished drill collars under its own brand--TEDA, and its products are widely used by drilling contractors in the oil field industry. The useful life of TEDA drill collars can range from one to several wells, depending on the stress and wear placed upon them.
Processing Features
u Teda Special Pipe Co Ltd carries sizes ranging from 3 1/8" to 14" ODs
u Advanced heat treating process before boring assures the success of the most critical process in manufacturing drill collars.
u Precision borers provide extremely straight bores and a minimum step in the center;
u Machining of end connections is done on CNC machines with constant profile cutting tools;
u Threads are cold rolled to enhance the fatigue resistance of connections;
u Phosphate-coated threads to prevent galling;
For more information please visit www.chinateda.com
API Drill Collar
