... Iron B) Grey Iron 1) Product information: Manhole covers are manufactured for road construction, natural gas, water supply and drainage, telecommunications. Manhole covers and ... , 35 3) Designs A) EN124 A15, B125, C250, D400, E600 and F900 B) BS497 Grade A, Grade B, Grade C. C ... ) Packing Steel or wood pallet, or as per customers' requirements. cast iron grating