triangle manhole cover

measurement
physical dimension: 700×700mm;750×750mm
the open measurement for the manhole cover: 600x600mm;605×605mm

product description
the special structure design for the product make it less weight, high strength, anti collapse, low noise high sealing. etc feature.

application
use non-toxic water-solubility black paint

install place
widely used in public places, such as roads, parks, squares, green spaces and so on.