... Steel bar grating can be used for: 1.Trench cover Application:city-road,plaza,landscape-gardening,dock,airport,parking-lot ... power plant,railway,highway,sewage disposal plant,waterworks,mine plant,iron-works,petrochemical plant,airport and dock. 7.Marine grill Item ... We are specialized inmetal trenches,steel trenches,grating canal,canal cover, steel grating has many advantage 2. Standard: it is ...