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Cast iron manhole cover,national or EN12R standard. used on road covering or deep well in the home, preventing the people or objects from falling. they are Widely used in urban construction,
municipal, water supply and drainage, electricity, telecommunications, automotive, railway, airport and other fields.
Some products shown as below ：
规格mm/specification（mm）
材质/material
级别/grade
承重力/breaking load
#200,300,400,500,600,700,800,900,1000
球墨铸铁
ductile cast iron
B125
>125kn
#300,400,500,550,600,700,800,900,1000
C250
>250kn
#400,500,550,600,700,800,900,1000,1100
D400
>400kn
#550,650,950,1050,1150
E600
>600kn
#630,730,830,930
F900
>900kn
备注：#200为200*200的方形盖板，可根据客户要求进行定制，其余同
Note: #200 is 200*200 square cover, can be customized. Same as other specification.
