En10219 40 Inch Large Diameter Steel Tube S355J0H

En10219 Standard 40 Inch Diameter S355J0H LSAW Steel Pipe

According to different forming methods, it can be divided into:

UOE steel pipe: single sheet steel in the edge of pre-bending, after U forming, O forming, welding, welding, mechanical cold diameter expansion and other processes.JCOE steel pipe: according to the "J-C-O-E" pre-welding, forming, welding after cold diameter expansion and other processesHME steel pipe: it is formed according to "C-C-O" by mandle-rolling method, and then welded through cold diameter expansion and other processes.

LSAW steel pipe has a wide range of finished specifications, good toughness, plasticity, uniformity and compactness of weld, and has the advantages of large pipe diameter, thick pipe wall, high pressure resistance, low temperature resistance and strong corrosion resistance.In the construction of high strength and high quality long distance oil and gas pipelines, the required steel pipes are mostly large-diameter thick wall straight seam submerged arc welded pipes.According to API standards, in large oil and gas pipeline, when passing through Class 1 and Class 2 areas, such as alpine zone, seabed and urban densely populated area, SSAW pipe is the only designated suitable pipe type.

The main bearing parameters are 2ST/T, S is the yield strength, T is the wall thickness.Submerged arc welding has been developed into double - wire submerged arc welding, and multi - wire submerged arc welding, further improve the efficiency.Widely used in steel structure, pile driving, fluid conveying, long - distance pipeline and other places.