UOE mill adopts Uing and Oing forming
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Welded steel pipe & tube

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.

UOE pipes manufacturing process

UOE(Uing and Oing forming) is a method used for production of longitudinally welded large diameter pipes.
UOE Pipe Manufacturing Process Demo

The UOE mill is the best suitable process to meet customers' requirements by virture of the characteristic of high production efficiency, stable product quality and various accessories for manufacturing and inspection.

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

UOE pipe Manufacturing Process

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.

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.

UOE pipes
UOE equipment

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.

UOE pipes
UOE pipes size range:

Specifications
Outside Diameter: Φ508mm- 1118mm (20"- 44")
Wall Thickness: 6.0mm-30.0mm(1/4"-1")
Quality Standards: API、DNV、ISO、DEP、EN、ASTM、DIN、BS、GB、CSA
Length: 9m-12.3m (30'- 40')
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.

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

Weled steel pipe specification, Standard and identification

Electrical resistance welding
Figure1

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.

Galvanized pipe process characteristics

What is Galvanized Steel Pipe? Galvanized steel can be made into a strong plumbing or tubing material -- one that resists corrosion from exposure to water or the elements. It has been used used for water-supply pipes or as a strong tubing for outdoor applications.

Hot dip galvanizing


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