RHS 1.Grade:A53 Q235 Q345 16Mn ST37 20# 45#, etc 2.Sized:10*5-90*60mm 3. ... , ASTM, BS, DIN, GB, JIS, etcGradeQ235, Q345, 20#, 45#, 16Mn, ST37, ST44,ST52, A53, A106, etcLong Side10-90mmShort Side5-60mm Wall Thickness0 ... Plate, Cold Rolled Steel Plate, Mild Steel Plate, Structure Steel, difference kind of pipes, Galvanized Steel Pipe, Seamless Steel Pipe, Square ...