Round Ductile Iron Manhole Cover

1. Product: ductile iron manhole cover, surface is smooth and free from sand holes, blow holes, distortion or any other defects 2.Production standard: EN124 from A15 to F900 , ISO9001:20083. Material: Ductile Iron GGG500 / Grey Iron GG20 3.Type: Square, Round and Triangle4. Process: Green sand with hand molding.5 Coating: .Black Bitumen or according to customer’s request6 we can produce according to customer’s drawings.7. Packaging: wooden pallets with steel stripThe ductile iron manhole are manufactured for municipal or drainage system and industrial facilities of valve well. Our products have been exported to many countries and received favorable comments from our customers.