Size: (1.8mm-140mm)*(100mm-2500mm) Standard: GB1499-2008, Grade: Q195, Q215, Q235, Q345, SPHC, SS4001, ASTMA36, S275JR,ect Application: Cold forming steel, structural steel, corrosion car steel structure, welding cylinders and pressure vessel steel, pipeline steel, etc. Material: Q195 is similiar to GrB, GrC, SPHC, SPHD Q215B is similiar to GrC, Gr58, SPHC, SPHD Q235B is similiar to GrD, Gr65 ...