First, the use of steel grating trench cover made ditch (well) cover, with a variety of models to choose from to suit different requirements of a load and span, trench cover for use in the sidewalk, driveway, patio or building ground material, as ditch, pipeline trenches, underground tunnels, air shaft, light wells, wells inspection cover. 2, trench cover usually consists of a fixed frame and activities steel grating cover. Customers may also be on-site production framework, manufacturers provide cover. 3, covers use in roads, parks and other municipal facilities, water wells, in wells, water wells and other wells or drainage holes, manholes to. Second, the trench cover features: trench cover appearance: simple lines, silver exterior, modern ideas. Best drainage: leakage area of ??83.3%, more than double cast iron. Hot-dip galvanizing: rust-proof and strong trench cover, 30-year free maintenance and replacement. Anti cover design: trench cover cover and frame hinge connection, security, safety, easy to open. Saving investment: large span, heavy load, low prices than cast iron; and save iron Gein stolen or crushed and replacement costs. High strength: strength and toughness is much higher than cast iron, can be used for docks, airports and other large span and heavy load conditions. Variety: To meet the different environment, load, span and shape required, trench cover can be customized to provide the size and shape of manufacture.