Steel I Beam Widely used for various architectural structure, bridges, vehicle, stents, and machinery, etc StandardAISI, ASTM, BS, DIN, GB, JIS, etcGradeA36 SS400 Q195 Q235 ... , H-Beam, C-Beam, Galvanized Steel Coil, Hot Rolled Steel Plate, Cold Rolled Steel Plate, Mild Steel Plate, Structure Steel, difference kind of pipes ...