Origin	China
Model Number	DB-1
Brand Name	Dongbao
Certificate	ISO9001 and API
End finish	NUE,EUE

Oil tubing with API 5CT& 5B
 1) OD: 2-3/8~4-1/2
 2) Grade: J55,K55, N80, L80, P110
 3)Thread type: NUE,EUE
 4)High quality

Tubing Standard API Spec 5CT
OD		Wall Thickness		Mass		ID	Ends	Grade
inch	mm	inch	mm	kg/m	lb/ft	mm		J55, K55,   N80,   L80, P110,
2-3/8	60.3	0.190	4.83	6.61	4.44	50.66	NU, EU
2-7/8	73.0	0.217	5.51	9.18	6.17	62.00	NU, EU
3-1/2	88.9	0.254	5.54	13.11	8.81	76.10	NU, EU
4	101.6	0.262	6.65	15.57	10.47	88.30	NU, EU
4-1/2	114.3	0.271	6.88	18.23	12.25	100.50	NU, EU

 The Nanoscale-Titanlum-containing Compound Coated Tubing(NTCCT) from our company are characterized with wear proof,excellent performance of anti-corrrosive,great tensile strength, and shock resistant.This technique has been patent protected.In the downhole condition, the running life of  NTCCT is 3-5 times of the uncoated tubing, and more than 5 times on the surface condition.