What's the features of Q345 seamless steel pipe?

For Q345E seamless steel pipe, Q indicates the maturity of the material, and the latter 345 indicates the yield value of the material (345).Besides, as the thickness of the material increases, the surrender value decreases.

Classification of Q345 seamless steel pipe

There are steel grades Q345A, Q345B, Q345C, Q345D, Q345E under Q345 seamless steel pipe. This is a difference in grade, which explains the different temperature and impact of the impact.

The grade of Q345A does not affect; the grade of Q345B is the influence of 20 degrees at room temperature; the grade of Q345C is the influence of 0 degrees; the grade of Q345D is the influence of -20 degrees; The impact value also varies depending on the impact temperature. In the plate is low alloy. This material is common in low alloy materials. The past of the steel pipe without the gap of Q345 is called: the steel pipe without the 16Mn connection. Q345 seamless steel pipe has an external execution specification of GB709 and an internal execution specification of GB / T1591-94.

Q345 seamless pipe belongs to low alloy series ---- low alloy high strength structural steel (GB/T1591-2008). Q345A, B, C, D, E are the representative grades of this type of steel. Among them, A and B grade steel is usually called 16Mn. This material is the most common. Q represents the yield of this material. The yield value of this material is around 345. (Similar to the naming method of Q235), and its yield value will decrease as the thickness of the material increases.

Q345 steel is compared with carbon structural steel. It has the advantages of high strength, good comprehensive performance, long service life, wide application range, and relatively economical. The steel is rolled into plates, profiles, seamless steel pipes, etc., and is widely used in bridges, ships, boilers, vehicles and important building structures.