Classification method of Q345B seamless steel tube
Q345B is a material for steel pipes . Q represents the yield of this material, and the back 345 refers to the yield value of this material. The Q345B steel pipe is a 16Mn steel pipe, which is one of the seamless steel pipe products. 16Mn is a material in steel. A name for steel in the past. Now called the law: Q345B. 16Mn is a low-alloy steel series. In this series, it is the most common material, or the grade of steel plate. The Q345B steel tube represents the carbon content of this steel in the range of about 0.16%. Mn alone was proposed because the five elements (carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S) have high manganese content and are proposed separately. About 1.20-1.60%. Special treatment heat treatment: controlled rolling, normalizing, etc.Z-direction performance: Z15, Z25, Z35. Main features: good overall performance, good low temperature performance, cold stamping performance, good welding performance and machinability. Q345B steel pipe weight f...