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The size of the manhole cover needs to be 6cm=2.4in larger than the actual hole size; for example, the size of the wellhead is 420*420mm, then the size of the manhole cover can be selected as 500*500mm.
Sewer grating cover height is 8cm=3.1in manhole cover; this height can meet almost all the height required for bricklaying.
The manhole cover is made of thickened 3mm stainless steel, and the load-bearing steel bar is thickened and stable, which is more stable and durable. After the bricks are laid, it can meet the requirements of pedestrians and vehicles.
Stainless steel triangular piece opening design, easy to disassemble.
Gutter covers are available in a variety of sizes, suitable for residential areas, schools, courtyards, gardens, parking lots, highways, docks, urban sidewalks, etc.
Stainless Steel Trench Cover Suitable for commercial and home use, serving hotel projects, large supermarkets, factories, squares, parks, courtyards, gardens and other places. Product name: stainless steel invisible manhole cover Material: Stainless steel Functions: Drain Strainers, Invisible stainless steel Trench Drainage, Channel Drain Grate, Garage Sewer Grate Cover, Sewer Drain Cover, Drain Strainers, Outdoor Sewer Drainage Cover.