3. Drill Pipe and Associated Products
| Drill
Pipe CPTDC can provide the drill pipe manufactured in accordance with API Spec 5D, API Spec 7, and API RP 7G. The steel grades include E75, X95, G105 and S135. The chemical composition of the steel is properly designed and strictly controlled. CPTDC can also supply special drill pipes such as sour service drill pipe, low temperature drill pipe and high torque resistance drill pipe with double-shoulder tool joints (DSTJ).  • Application • Oil and gas well drilling • Other downhole operations • Product Type • API drill pipe • Sour service drill pipe • Low temperature drill pipe • API tool joints • Double-shoulder tool joints (DSTJ) • Premium thread tool joints • Other non API drill pipe and tool joints • Features • High precision in size and shape • Good low temperature toughness • Excellent comprehensive mechanical properties • High connection strength and sealability • Large inside diameter of tool joint • High torque resistance • High fatigue strength and long fatigue life • Specifications • API Spec 5D Specification for Drill Pipe • API Spec 7 Specification for Rotary Drill Stem Elements • API RP 7G Recommended Practice for Drill Stem Design and Operating Limits  • Process Flowchart of Hot Rolled Seamless Pipe and Drill Pipe  • Part of Production Line of Drill Pipe     • Main Technical Parameters of Drill Pipe
*The former thread type is preferential; **FH=full hole tool joint, IF=internal flush tool joint. Notes: 1 All of the sizes above as specified in API Spec 7; 2 Any kind of combination of drill pipe and tool joint of other models and sizes is available; 3 Any kind of combination of drill pipe and left hand connection is available; 4 We can provide E75 and X95 products in large batches only; 5 We can also provide sour service drill pipe and low temperature drill pipe; 6 We can provide high torque resistance drill pipe with double-shoulder tool joint (DSTJ) and other premium thread connections.   Internal Coating for Drill Pipe The production line of internal coating for drill pipe which is similar to that of line pipe and tubing has been improved based on the latest technologies. The internal coating for drill pipe has many good features including anticorrosion, flexibility, abrasion resistance, low flow resistance and son on, so that it can improve the flow efficiency of drilling fluid, prolong the life of drill pipe and reduce the cost of drilling. • Product Type • Multi-use internal coating • Heat resistant and flexible internal coating • High acid & alkali proof, abrasion resistance thick film internal coating • Features • High abrasion resistance and low friction factor • Good adhesion and flexility • High application temperature and pressure • High hardness and impact resistance • Good corrosion resistance • Production Capacity
Note: We can also supply the internal coating according to customers' requirements. Hardbanding for Drill Pipe Joint Hardbanding is used for the external surface of tool joint to improve the abrasion resistance of drill pipe and casing, reduce the friction between the tool joint and casing. Hardbanding can effectively protect the drill pipe and casing, prolong the life of drill pipe and casing and increase the security of drilling operation.  • Product Type • High antiwear type • Good friction-reduction type • Perfect combination type • Features • Good balance between antiwear and friction-reduction • The wear rate is less than 6% of that of bare tool joint, which can prolong 3 times of the tool joint service life • Good property of friction-reduction, which can reduce the casing wear to the least, and its wear to casing is less than 11% of that of bare tool joint • Reduce the torque of drilling string • Good weldablity with little splash and good rewelding preformance • Friendly to environment • Product Application • Drill pipe • Heavy weight drill pipe • Drill collar • Centralizer, absorber and other downhole tools  • Production Capacity
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Page 1 2 3 4 5 6 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||