What is the general thickness of ductile iron manhole covers?

Ductile iron manhole covers are based on national standards, and the thickness of heavy-duty ductile iron manhole covers is about 13 mm in order to achieve the load capacity. The specifications and models of ductile iron manhole covers are super heavy according to the requirements of GJ/T121-2000. The thickness of manhole covers is not less than 70mm, the thickness of ordinary manhole covers is not less than 50mm, and the thickness of light manhole covers is not less than 20mm.

The load-bearing capacity of heavy-duty ductile iron manhole cover is 400KN under the condition of safety performance of 9, more than 40 tons, 400KN diameter 700 super heavy-duty ductile iron two-layer manhole cover rubber bearing net weight 112Kg, diameter 700 light ductile iron two-layer manhole cover rubber support Net weight 89Kg.

Manhole cover specifications and models are 500*500B125, 500*500B125, 600*600B125, C250700*700B125, 450*750B125, C250700*800B125.

Heavy duty ductile iron manhole cover main application: can be used in urban planning and construction of power supply, sewage pipeline inspection well, heating, natural gas inspection well, postal express, telecommunication network, communication optical cable tube well, power engineering pipeline well, road street lamp well, fire safety well , All kinds of rainwater wells, anti-corrosion and thermal insulation projects, open water ditch cover plates, and can be manufactured according to the unique needs of customers.