... . Standard: EN124 Diameter: 300-1800mmMaterials: Various Grade Cast iron and Grey Cast Iron: - Grey Cast Iron Types: GG15 ,GG20, GG23, GG25 ,GG30 - Ductile ... defects 2) Designs .a) EN124 A15, B125, C250, D400, E600 and F900 b) A60005 for casting design c) Major standards designs ... Any inquiry, pls don't hesitate to contact us! Ductile Iron Manhole Cover, Professional Manufacturer, Reasonable Price