Gray Iron Manhole Covers: Standard: EN124 Material: Ductile iron , Gray iron Loading Class: A15, B125, C250, D400 Grey iron Manhole Covers:Dimension Standard: EN124Material: Ductile iron, Gray ironLoading Class: A15, B125,C250, D400 / LD, MD, HDTypes: all sizes shown in our catalogueWe also can manufacture as per user's special requirements.