1. Heavy load machine welded 2. ISO9001:2008 3. 30/100 mesh size 4. 1X5.85m Galvanized floor steel grating,flooring grating,trench grating,stair treadSpecificationsAdvantages of steel grid plank: light weight, strong intensity, big load capacity, transmission and aeration, anti-skidSteel product standard: China YB/700-881) Bearing bar pitches may be 12.5, 15 to 30, 40, 60, 80 and 90mm; of which ...