Manhole cover Manhole covers, gratings,gully tops and Tress grilles, and etc, Which are made from composite material like glass fiber,resin,quartz sand and so on. Our products are produced srictly according to EN124, we can offer A15,B125,C250 and D400 load ability standards. Compare with casting iron products, this kinds of products have the follow advantages 1 eautify the environment; perfect design and the color can be changed as per environment and customer's requirment 2 Specil relief sculpture on surface with good dicoractive effect. 3.High load ability ,strictly manufacture according to ISO9001:2000 EN124 4.Well sealled,no noise pollution or rebound 5.Lighter than cast iron manhole cover 6. Long use-age life (Not less than 30 years). 7.Anti-corrosion, the materials FRP/GRP ,SMC, DMC/BMC have high anti-corrosion.