Origin	China
Model Number	86-15263613951
Brand Name	DONGBAO
size	2 3/8''~4 1/2''

Advantages:
1 high quality
2 high technology
3 long operation time

Bringing into sophsticated patent technology,Shandong Dongbao Group CO.,Ltd produces anti-corrosion tubing which is in the leading position in the industry. The products mainly include Titanium-containing Compound Inner Coat Tubing, Carbon-Zirconiium Compound Resin Inner Coat Anti-Corrosion and Wear Resistance Tubing and Ni-P Composite Plating Tubing.

Meanwhile, the company is also able to handle anti-corrosion disposal for recovered tubing.

Tubing with anti-corrosion coat  can dramatically improve anti-corrosion performance, intensity and service life in different oil well conditions; especially, the service time of the Titnium-containing Compound  Inner Coat tubing and Carbon-zirconium Compound Resin Inner Coat Anti-Corrosion and Wear Resistance Tubing is three to five times longer than uncoated ones.

Our company provides the following tubings with API standard.   

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	6.84	4.6	50.70	NU,EU
2-7/8	73.0	0.217	5.51	9.53	6.40	62.00	NU, EU
3-1/2	88.9	0.254	6.45	13.7	9.2	76.00	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