我公司大量供应各种窨井盖，用于城市供排水、电缆沟观察井、电信维修井等工程。主要有镍复合井盖、树脂复合井盖、球墨铸铁井盖、灰铸铁井盖、水泥钢纤维复合井盖等。常用口径为：∮600、∮700、∮800，抗压重量从10T--100T之间。
我们提供的铸铁井盖分为球墨铸铁井盖和灰铸铁井盖，一般来说，同等重量的球墨铸铁井盖要比灰铁井盖抗压能力强。灰铁井盖采用的材料一般为HT200,球墨井盖采用材料一般为QT500-7。Our company supplies various kinds of CMC, used in urban water supply and drainage, in cable trench observation well, telecommunications maintenance, Wells and other projects. Mainly include nickel composite manhole cover, resin composite manhole covers, ductile cast iron manhole covers, grey cast iron manhole covers, cement steel fiber composite manhole cover, etc. Commonly used size for: 30, 30, 700, 30, 800, 600 between compressive weight from 10 t - 100 t.

We provide cast iron manhole covers are divided into nodular cast iron manhole covers and grey cast iron manhole covers, in general, the same weight of nodular cast iron manhole covers compressive ability strong than grey iron manhole covers. Materials used generally for HT200 gray iron manhole covers, ductile manhole covers the material is commonly QT500-7.