1. Name: FRP/GRP Manhole Cover 2, Spec: D400 DIA700 3, Material: FPR/GRP 4, Class: A15,B125, C250, D400 5, Standard: EN124 ... Name: FRP/GRP Manhole CoverSpec: All kind of specs.Material: FRP/GRPClass: From ... CONTACT US!WWW.TSINTER.CNTSINTER.EN.ALIBABA.COM ROUND FRP/GRP MANHOLE COVER