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About product and suppliers:
        Alibaba.com offers 10,824 cast iron manhole covers products. About 84% of these are cast & forged, 5% are other roadway products, and 2% are metal building materials. 

A wide variety of cast iron manhole covers options are available to you, such as iron, stainless steel, and aluminum. You can also choose from free samples, paid samples. 

There are 10,824 cast iron manhole covers suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of cast iron manhole covers respectively. 

Cast iron manhole covers products are most popular in Africa, South America, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 5,536 with ISO9001, 2,388 with Other, and 939 with OHSAS18001 certification.