Zhangjiagang Shagang Jinzhou Steel Pipe Co., Ltd now has a production line with JCOE process to produce big diameter straight seam double-sided submerged arc welding pipe, which has annual output capacity of 200,000 tons. JCOE welding steel pipe production line has adopted the process of asymptotic bending forming, so that the stress can be evenly distributed and pipe shape can be kept well; The adopted pre-welding process combines with finished-welding process can guarantee a stable welding process with high welded seam quality; The straight welded seam can be easily implemented for nondestructive testing during the production process; After the treatment of expanding the steel pipe diameter by overall machinery, its internal stress is small with even distribution. This kind of pipe can effectively prevent stress from corrosion cracking with high dimensional accuracy so that it is easy to carry out the spot welding construction; Due to their various pipe product specifications as well as the fast and simple conversion specification, they can produce small diameter, large wall thickness of steel pipe, and also produce large diameter, large wall thickness of steel pipe, so as to achieve any diameter size for pipe products within the production range.
1. Product Specification
Pipe diameter: φ406mm～φ1626mm(16"～64")
Pipe length: 3.0m～12.3m(10'～40')
Pipe wall thickness: 6.4mm～54.0mm(1/4"～2⅛")
2. Product Scope
(1)Pipeline pipe
Material: API 5L(A,B,X42-X80)
Diameter: 406mm-1626mm(16"～64")
Wall thickness: 6.4mm-54mm(1/4"～2⅛") Standard: API 5L, GB/T 9711, ISO3183, etc.
Application: Pipeline for petroleum and natural gas transmission on land and sea floor.
(2)Structural pipe and low pressure fluid delivery pipeline
Material: GradeA-E, Q215-345, etc.
Diameter: 406mm-1626mm(16"～64")
Wall thickness: 6.4mm-54mm(1/4"～2⅛")
Standard: GB/T 3091, etc.
Application: Low pressure pipeline for fluid transmission, and various weighted and stressed structural parts, etc.
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