... kinds of manhole covers with high quality Class B125, C250, D400, E600, F900 Meeting EN124,BVQI and Australian standarad. Round manhole CoverFeatures:1 ... We also produce drain cover using steel, stainless steel by electric welding and punching.5) Product series include Class B125, C250, D400 ... 69700X700 75600X600 70800X800 80700X700 95900X900 90800X800 1131000X1000 100900X900 154 Round manhole Cover