... :6m-12m 3.standard:ss400,europen,A36,s235jr 75*40 steel channel Advantage: a.) It has thin wall, light weight, ... strength, and so on.b.) Compared with the traditional channel, c beam can save 30% of the same strength ... of materials. Applications:a.) Steel building purlin, wall beam;b.) Self-assembled into lightweight ... .46330B#300879.539.17332A#32088838.083 75*40 steel channel