... GB DIN Material:A53(A,B), A106(A,B,C), A210-C OD:48-2438mm Thickness:2-25mm Submerged Arc Welded Steel ... PipesStandard: ASTM GB DINMaterial: A53(A,B), A106(B,C),GB 10# 20# Q235, Q345 St37 St37-2 etc.Outer ... : SSAW LSAW HSAWASTM A53 Chemical and Mechanical Analysis GradeC ≤M ≤P ≤S ≤Cu ≥Ni ≤Cr ≤Mo ≤V ≤A0.25 0.950 ...