GALVANIZED STEEL GRATING 1. bearing bar : 35x5mm,30x5mm,25x5mm. 2. cross bar : 6mm, 8mm. 3.Plain,Serrated,I-shape Series 1 (pitch 30mm) steel grating is ... throughout the whole industry, The center distance of this series steel grating is 30mm, Which comply with U.S. standards,It ... and drains cover, stair step and so on. Tooth steel grating can be used for wet, greasy areas, especially for offshore ...