1.Structural I Section on Sale 2.100*68*4.5*7.6-630*180*17*22 3.SS400, A36, ST37, ST52, Q235B 1. Structural I Section on Sale 2.100*68*4.5*7.6-630*180*17*223.SS400, A36, ST37, ST52, Q235B4. We can supply different size I beam in different material under JIS, GB and EN standard.5. Chinese Standard SizeEN Standard SizeDemension Tolerance BV Certificate Products