http://pastport.jp/user/manholecover123/timeline/composite%20standard%20manhole%20cover Specification of composite standard manhole cover sizes:Material: Sheet Moulding Compound ( SMC )Standard: EN 124Surface Treatment: Anti-Slip, anti-UVTechnique:Mould PressingLoading capability: A15+, B125, C250, D400, E600 SMC Manhole Cover in EN 124 wit ja-JP