undefined undefined undefined undefined trench cover model and material; trench cover selection to suit different requirements of load and span a flat material: Material for Q235A or stainless steel, a common plane type, tooth type and section I slip type 2. Common specifications are 20 * 525 * 5100 * 1065 * 5 and so on rails: Stainless steel round bar \ twisted square steel \ square or hexagonal steel twisted steel plate by drawing die by the side garden and twisted twisted together, their common specifications 5 * 5 6 * 6 8 * 8mm trench cover features such as: appearance: simple lines, 2. Best drainage: leakage area of ??83.3%, more than double cast iron. 3. Hot-dip galvanizing: rust-proof, strong, maintenance and replacement of 4 anti-theft design: with a hinged lid and box connection, security, safety, easy to open 5. saving investment: When large span, heavy, than cast iron low price and save the cost of replacing the stolen or crushed 6. High strength: strength and toughness is much higher than cast iron, can be used for large span and heavy load environment docks, airports and other 7 specifications: meet different environment \ load \ span \ required .. trench cover uses the size and shape; the design and manufacture of steel lattice panels, widely used in urban roads, squares, gardens, docks, airports, parking lots, roads, railways, industrial processes, such as various types of industrial buildings. This product is made of high quality galvanized steel refining. Light weight, large capacity, secure non-slip, easy installation and removal, durable, air and light, appearance and other characteristics. Widely used in electric power, petroleum, chemical, metallurgy, machinery, shipbuilding, ports, marine engineering, construction, transportation, municipal parking lots. Used to making platform, floor, bridge, fence, trench cover, covers panels, ceiling panels, ventilation facilities, etc. The company specializes in the production of steel grating, grating, steel grating, trench cover, treads, steel Grating standard, steel grid, dense steel grating, serrated steel grating, galvanized steel grating, heavy duty steel grating, steel grating fence, pressure welding steel grating, steel grating platform, special steel grating , plug steel grating, composite steel grating, steel grating ceiling, stainless steel grating, galvanized steel grating, hexagonal mesh, twist steel, tree pool cover, filters and other products.