... project,chemical factory and so on. Steel grating is made by welding with flat steel and bars with certain distances.it goes ... serrated type bearing bar is 20 x 3 to 100 x 10;the specification of I-section type is ... ,40,41.25,45,50,60,60.32,80,100 mm etc,also be according to client's requirement and ... recommendedCross Bar Pitch (center to center):38,50,76,100, 101.6mm etc,also be according to client's ...