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About product and suppliers:
        Alibaba.com offers 1,194 locking manhole covers products. About 65% of these are cast & forged, 16% are other roadway products. 

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

There are 1,187 locking manhole covers suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Turkey, which supply 98%, 1%, and 1% of locking manhole covers respectively. 

Locking manhole covers products are most popular in Africa, Eastern Europe, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 473 with ISO9001, 259 with Other, and 107 with OHSAS18001 certification.