... ,etc. 2.Size: 10-63mm 3.Length:6-12mMild Steel I-beam 1.Grade:Q235B,Q345,SS400,A36,etc2.We ... bellows,Standard AISI,ASTM,GB,etcGrade201, 304, 316, 321, 316LDescriptionStianless steel I-beam, I-stee l ,H-steelSurfaceBright, polished ,peeled, ... cold drawn, hot rolledLength6 meter or as your requirementHight10-40mmWaist high10-63mmWidth12-200mmThickness4 ...