... largest production capability c.reliable manufacturer d.best price Steel grating Advantages of steel grid plank: light weight, strong intensity, big load ... and 100mm; of which 50 and 100mm arerecommended3) Advantages of steel grid planks: light weight, strong intensity, big load capacity, ... requested by customers, or depends on the wrappingmethods used before. steel grating for stair/Ditch cover etc