Ductile iron manhole cover Product information: 1. Manhole covers are manufactured for construction and public use 2. Manhole covers shall be smooth and free from sand holes, blow holes, distortion or any other defects Materials: 1. Ductile iron GGG50 and GGG40 2. Grey iron GG20 Designs: 1. EN 124 A15, B125, C250, D400, E600 and F900 2. A60005 for casting design 3. Major standards designs available 4. As per customer's drawings or samples Process: 1. Molding boards 2. Green sand with hand molding Coating: 1. Cold applied black bitumen 2. Without coating 3. Coating as per customer's requirements 4. Different accessories are available