I BEAM 1.Inquiry responded within a day. 2.Offer the best at low price. 3.Pro team does Pro deed. 4.Focus on customer's need I BEAMSTANDARD AND SPEC:GB: Q195, Q235, Q345JIS: SS400ASTM: A36, A572 Gr50, A992 Gr50EN: S235JR, S235JO, S235J2, S275JR, S275JO, S275J2, S355JR, S355JO, S355J2SIZE RANGE:(Height) 100~360MM X (Width) 68~138MM X (Thickness of middle plate):4~13.5MM I BEAM