Origin	China
Model Number	DONGBAO
Brand Name	DB
Grade	J55, K55, N80,L80, C90, P110
Length	R1 R2 R3
Outer Diameter	60.32-114.30mm
Specification	J55, K55, N80,L80, C90, P110
Technique	Seamless
Thickness	4.24-16.00mm
Usage	oil well and gas well

API Oil  Tubing

1. Size: 2-3/8 inch to 4-1/2 inch;

2. End Type: NU & EU;                                           

3. Steel Grade: J55, K55, N80, L80;                            

4. Specification: API Spec5CT;               

5. Feature: Nanoscale Titanlum-containing Compound Coated, high corrosion resistance and long running life. 

 

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