UOE Pipe

UOE is a method used for production of longitudinally welded large diameter pipes.

UOE (Uing and Oing forming) Pipes

Longitudinal edges of steel plates are first beveled using carbide milling equipment. Beveled plates are then formed into a U shape using a U-press and subsequently into an O shape using an O-press.

UOE pipe Manufacturing Process

The UOE mill features the most advanced technology and process, achieves high production efficiency, stable product quality and is equipped with complete inspection equipments.

UOE mill adopts U & O forming, the formed pipes are welded inside through five internal welding stations with three wires, and welded outside through four external welding stations with three wires.

Specifications

UOE pipes size range:

  • Outside Diameter： Φ508mm- 1118mm (20"- 44")
  • Wall Thickness： 6.0mm-30.0mm（1/4"-1"）
  • Length： 9m-12.3m (30'- 40')

Quality Standards： API、DNV、ISO、DEP、EN、ASTM、DIN、BS、GB、CSA

O.D. W.T. Length(m)
Min.Yield Strength(Mpa)
In. Mm 245(B) 290(X42) 360(X52) 415(X60) 450(X65) 485(X70) 555(X80) 625(X90)
20 508 6.0-26.0 6.0-25.0 6.0-23.0 6.0-21.0 6.0-20.0 6.0-19.0 6.0-17.0 6.0-15.0 9.0-12.3
22 559 6.0-26.0 6.0-25.0 6.0-23.0 6.0-21.0 6.0-20.0 6.0-19.0 6.0-17.0 6.0-15.0 9.0-12.3
24 610 6.0-27.0 6.0-26.0 6.0-24.0 6.0-22.0 6.0-20.0 6.0-19.0 6.0-17.0 6.0-15.0 9.0-12.3
26 660 6.0-27.0 6.0-26.0 6.0-24.0 6.0-22.0 6.0-20.0 6.0-19.0 6.0-17.0 6.0-15.0 9.0-12.3
28 711 6.0-28.0 6.0-27.0 6.0-25.0 6.0-23.0 6.0-21.5 6.0-20.0 6.0-18.0 6.0-16.0 9.0-12.3
30 762 7.0-28.0 7.0-27.0 7.0-25.0 7.0-23.0 7.0-21.5 7.0-20.0 7.0-18.0 7.0-16.0 9.0-12.3
32 813 7.0-29.0 7.0-27.0 7.0-25.0 7.0-23.0 7.0-21.5 7.0-20.0 7.0-18.0 7.0-16.0 9.0-12.3
34 864 7.0-29.0 7.0-28.0 7.0-26.0 7.0-24.0 7.0-22.0 7.0-21.0 7.0-19.0 7.0-17.0 9.0-12.3
36 914 7.0-30.0 7.0-28.0 7.0-26.0 7.0-24.0 7.0-22.0 7.0-21.0 7.0-19.0 7.0-17.0 9.0-12.3
38 965 8.0-30.0 8.0-28.0 8.0-26.0 8.0-24.0 8.0-22.0 8.0-21.0 8.0-19.0 8.0-17.0 9.0-12.3
40 1016 8.0-30.0 8.0-29.0 8.0-27.0 8.0-25.0 8.0-23.0 8.0-22.0 8.0-20.0 8.0-18.0 9.0-12.3
42 1067 9.0-30.0 9.0-29.0 9.0-27.0 9.0-25.0 9.0-23.0 9.0-22.0 9.0-20.0 9.0-18.0 9.0-12.3
44 1118 9.0-30.0 9.0-29.0 9.0-27.0 9.0-25.0 9.0-23.0 9.0-22.0 9.0-20.0 9.0-18.0 9.0-12.3

Grades： API 5L A-X90,GB/T9711 L190-L625

In accordance with different requirements of the customers, the welded pipe can be expanded either by mechanical or hydrostatic expander to improve dimensional accuracy, and eliminate residual stress.

Weled steel pipe specification, Standard and identification

Welded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.