galvanized steel grating Bearing pitch:30mm crossing pitch:100mm bar thickness:3mm Factory price galvanized steel grating 1)Bearing bar pitches maybe 1.5 to 15,20,30,40,60,80,90mm of which 20,30mm are recommended.2)Cross bar pitch may be 24-200mm, of which 30,38,50,76mm and 100mm are recommended.3)Type:Plain , serrated, "i", press-locked4)Material specification: ASTMA36,BS4360,JISG3101&SS4005) ...