The sewage ductile iron manhole cover is a widely used manhole cover,mainly used for covering urban sewage pipelines,rainwater pipelines,communication pipelines,and other wellhead covers.Its characteristics include good load-bearing capacity,strong corrosion resistance,long service life,and high anti-theft performance,making it an indispensable and important part of urban infrastructure construction.The main material for sewage ductile iron manhole covers is ductile iron,which is a high-strength,wear-resistant,and corrosion-resistant casting material.Its strength and toughness are higher than ordinary cast iron,and its corrosion resistance is also better.In addition,ductile iron also has good self-lubrication and self compensation properties,which can self repair small damages caused during use,thereby extending its service life.The design of sewage ductile iron manhole covers also places great emphasis on load-bearing capacity and anti-theft performance.

　　Sewage ductile iron manhole cover

　　1、The function of sewage manhole cover

　　Sewage manhole covers refer to metal or plastic products used to cover sewage pipelines or ditches,which have important functions such as bearing traffic loads,protecting sewage equipment,and maintaining road safety.

　　2、Specification and model of sewage well cover

　　1.Sponge city sewage well cover:The specifications and models are 800*800mm,900*900mm,1000*1000mm,etc.,suitable for urban squares,roads,residential areas,and other places.The manhole cover is made of special materials and has the characteristics of anti-skid,waterproof,soundproof,thermal insulation,and anti-corrosion.

　　2.High strength cast iron manhole covers:with specifications and models of 500*500mm,600*600mm,700*700mm,etc.,suitable for commercial centers,schools,hospitals,and other places.The manhole cover is made of high-strength cast iron,with strong load-bearing capacity,wear resistance,corrosion resistance,and good sealing performance.

　　3.Double sealed manhole cover:The specifications and models are 600*600mm,800*800mm,1000*1000mm,etc.,suitable for sidewalks,parks,and other places.The manhole cover adopts a dual sealing structure design,which has the characteristics of anti slip,waterproof,anti odor,and anti bubble.

　　4.Plastic manhole cover:The specifications and models are 300*300mm,400*400mm,500*500mm,etc.,suitable for residential areas,industrial parks,and other places.The manhole cover is made of high-strength plastic,with light weight,good insulation performance,and long service life.

　　Sewage ductile iron manhole cover

　　3、Introduction to categories of sewage manhole covers

　　1.Cast iron manhole cover

　　Cast iron manhole covers are a common type of manhole cover in the market.Its material is mainly made of iron,which has the advantages of being sturdy,durable,pressure resistant,corrosion-resistant,able to withstand large loads,and has good anti slip performance.It is suitable for urban roads,squares,and other areas with a large number of motor vehicles.However,the disadvantage of cast iron manhole covers is that they are heavy and difficult to install and transport.

　　2.Composite material manhole cover

　　Composite material sewage manhole covers are mainly made of materials such as resin and fiberglass,which have the advantages of light weight,non theft,anti-corrosion,non insulation,and environmental protection.Therefore,this type of manhole cover is suitable for areas with high pedestrian traffic,such as sidewalks,parks,residential areas,schools,and other places.

　　3.Reinforced concrete manhole cover

　　Reinforced concrete manhole cover is a type of manhole cover made on the basis of reinforced concrete with additional steel bars.Its characteristics are pressure resistance,wear resistance,and beautiful appearance.In addition,reinforced concrete sewage