GB/T1591 Q345A LSAW Pipe

Q345A welded pipe is a kind of steel with good strength but poor performance. It is low alloy steel and is widely used in bridges, vehicles, ships, buildings, pressure vessels, etc.
Compared with Q345B, C, D, and E steel, Q345A straight seam steel pipe has high low-temperature impact test temperature, poor performance, and contains higher amounts of harmful substances P and S than Q345B, C, D, and E.
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.
Q345A What are the mechanical properties of welded steel pipe?
Wall thickness mm ≤16, elongation δ5≥ (%) 21, yield strength δs (MPa≥) 345, test temperature ℃ not required, tensile strength σb (MPa≥) (470-630).

GB/T1591 Q345A LSAW pipe Chemical Composition and Mechanical Property

Straight seam resistance welded pipe

Additional Condition
UT(Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered),Z Direction Test(Z15,Z25,Z35), Charpy V-Notch Impact Test, The Third Party Test (such as SGS Test), Coated or Shot Blasting and Painting.

Why choose us

Founded in 2008, Gnee Company is a professional manufacturer and service provider of various special seamless steel pipes, specializing in the production of fluid pipes, boiler pipes, alloy structural pipes, automobile pipes, marine pipes, etc. We have advanced production equipment, sufficient inventory, and many partners.

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