Q345B Q355B Welded Carbon Steel Pipe

Q345B welded steel pipe is a kind of steel material. It is carbon alloy steel (c<0.2%) with good comprehensive properties, good low temperature performance, good cold stamping performance, good welding performance and machinability. Widely used in bridges, vehicles, ships, buildings, pressure vessels, etc. Q represents the yield of this material, and the following 345 refers to the yield value of this material, which is around 345MPa. And as the thickness of the material increases, its yield value decreases.

Q355B welded carbon steel pipe refers to welded steel pipe made of Q355B grade high-strength low-alloy structural steel. It has high strength, good toughness, cold formability and weldability, making it widely used in various engineering structures and mechanical components. The minimum yield strength of Q355B straight seam steel pipe reaches 355 MPa, which has a higher load-bearing capacity than ordinary carbon steel. Q355B ERW steel pipes have a lower carbon equivalent and are less likely to crack during welding.

 ERW round pipe

1. SGS and ISO9001 certified.
2.Extra long time industry experience
3.Management system - in-house software
4.Finished goods inventory-over 450 tonnes.
5.Raw material inventory-over 700 tonnes.
6.Cargo Transportation- Over 60 countries worldwide.

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