... , C250, D400, E600, F900 Meeting EN124,BVQI and Australian standarad. Round manhole CoverFeatures:1) More than ten years' experience on manufacturing ... and grates.3) Manufacture --- casting.4) We also produce drain cover using steel, stainless steel by electric welding and punching.5 ... 75500X700 69700X700 75600X600 70800X800 80700X700 95900X900 90800X800 1131000X1000 100900X900 154 Round Manhole Cover