Q 355b steel plate
Q355b large diameter thick wall steel pipe is a kind of material. It used to be called seamless steel pipe. The carbon content of the steel is about 0.16%. Mn was extracted separately because of the high content of manganese in the five elements (C, Si, Mn, P, s).
Main characteristics of thick wall steel pipe: good comprehensive performance, low temperature performance, cold stamping performance, welding performance and machinability.