HomeAll ProductsSubstructure Manhole Raising CircleDuctile iron casting- manhole raising circle.It is used for raising manholes which remains under the level of road.Substructure Manhole Raising CircleMaterial (optional)SelectProduct Info Product weight is 24 kg. Manufactured in compliance with EN124 NotesWeight tolerance: plus or minus 2 kg (up to 24 kg)plus or minus 3 kg (24�125 kg)and plus or minus 4 kg (over 125 kg).