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ERW/LSAW/SSAW


ERW

High Frequency Longitudinal Seam Welded Steel Pipe is also called ERW steel pipes, is the abbreviation of Electric Resistance Welded steel pipes. It is pipe produced by heating the steel plate edges to melt by high frequency electric current and form a seam under pressure of rolls without filler metal..


SSAW

  


LSAW

UOE SAWL PIPES
UOE SAWL PIPES


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

Prodution Line


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.

Specifications


Outside Diameter: Φ508mm- 1118mm (20"- 44")

Wall Thickness: 6.0-25.4mm(1/4"-1")
Quality Standards: API、DNV、ISO、DEP、EN、ASTM、DIN、BS、JIS、GB、CSA
Length: 9-12.3m (30'- 40')
Grades: API 5L A-X90,GB/T9711 L190-L625


JCOE SAWL PIPES(PRESS BENDING)

Prodution Line


This is large diameter longitudinal submerged arc welded (SAWL) pipe production line in China. The mill adopts progressive bending process, featuring evenly distributed forming stress, high uniformity of dimension, infinite sizes variation&wide poduct range, and high flexibility, etc.

Specifications


Outside Diameter: Φ406mm- 1626mm (16" - 64" )

Wall Thickness: 6.0- 75mm (1/4" - 3" )
Quality Standards: API、DNV、ISO、DEP、EN、ASTM、DIN、BS、JIS、GB、CSA
Length: 3-12.5m ( 10'- 41' )
Grades: API 5L A-X100, GB/T9711 L190-L690

JCOE SAWL PIPES(ROLL BENDING)
Production Line


This is the first large diameter longitudinal submerged arc welded (SAWL) pipe production line in China. The mill adopts continuous axis contorting J-C-O forming process with characteristics of high forming accuracy and efficiency as well as balanced distribution of forming stress. The mill has the advantages of wide specifications and can produce pipes in any size within its production range.

Specifications


Outside Diameter:Φ406mm- 1829mm (16" - 72" )

Wall Thickness:6.0-30mm(1/4" -11/6")
Quality Standards:API、DNV、ISO、DEP、EN、ASTM、DIN、BS、JIS、GB、CSA
Length:3-12.2m ( 10'- 40' )
Grades:API 5L A-X80, GB/T9711 L190-L555