Outside Diameter: 2-3/8" -- 4-1/2"
Wall Thickness: 4.24mm--6.88mm
Steel grade: J55 / K55 / N80-1/N80-Q
Standards: API 5CT
Applications: For oil field industries
Outer packing: Bundles
Product origin: China
Grade and Size (mm)
Grade J55/K55/N80 Size: 60.3*4.24/4.83
Grade J55/K55/N80 Size: 73.02*5.51

Zhangjiakou High-Tech Steel Pipe Co., Ltd. is a corporation who specializes in manufacturing high strength ERW steel tubes for automobile, drilling and liquid service, as well as oil casing tubes for petroleum and natural gas

The advantages of buying our products:
1, With the most profitable price
2, With the most superium quality
3, With the most considerate after service
4, With the largest discount

Grade J55/K55/N80 Size: 88.9*5.49/6.45
Grade J55/K55/N80 Size: 101.6*5.74
Grade J55/K55/N80 Size: 114.3*6.88

Casing:
Outside Diameter: 4-1/2"-- 5-1/2"
Wall Thickness: 5.21mm--7.72mm
Steel grade: J55 / K55 / N80-1/N80-Q
Standards: API 5CT

Applications: For oil field industries
Outer packing: Bundles
Product origin: China
Grade and Size (mm)
Grade J55/K55/N80 Size: 114.3*5.21/5.69/6.35/7.37
Grade J55/K55/N80 Size: 127.0*5.59/6.43/7.52
Grade J55/K55/N80/Size: 139.7*6.20/6.98/7.72