1. Product details:
1).Standard: API 5CT & ISO9001:2000 
2).Specification:4 1/2"-13 3/8" 
3).WT:5.21mm-13.06mm

2. Abstract:
Petroleum Casing and Oil Pipe is a premium form of corrosion protection for some of the most severe chemical and abrasive environments. Natural and butyl rubber linings withstand a variety of high-concentration acids and are the optimum choice for high heat and abrasive environments. Additionally, the elasticity of a rubber lining easily accommodates thermal expansion and contraction as well as vibration.

3. Features:
1) The chemical properties are stable, and the characteristics of high heat-resistance and anticorrosion are also excellent;
2) The impact resistance is strong due to the outer protective layer of steel;
3) Pipes is connected with flange, and easy to installation

4. Application:
Protecting oil/gas tube, and guarantee oil/gas well's nominal operation.