What is the common material of welded pipe?

Common materials of welded pipe are: Q235A, Q235C, Q235B, 16Mn, 20#, Q345, L245, L290, X42, X46, X60, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, etc

The billet used for welding steel pipe is steel plate or strip steel, which can be divided into furnace welded pipe, electric welding (resistance welding) pipe and automatic arc welding pipe because of its different welding process. Because of the different welding forms, it can be divided into straight seam welded pipe and spiral welded pipe. Because of the shape of its end is divided into circular welded pipe and special shape (square, flat, etc.) welded pipe.