... , they are Plain Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating.We can design and manufacture ... Bar(Load Bar ) Specifications(mm):The specification of plain type and serrated type bearing bar is 20x3 to 100x10 , the specification of ... I –section type is 25x5x3, 32x5x3,38x5x3,40x5x3,50x5x3,50x7x4,55x7x4, ...