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About product and suppliers:
        Alibaba.com offers 225 drainage pit covers products. About 71% of these are metal building materials, 5% are other roadway products. 

A wide variety of drainage pit covers options are available to you, such as free samples, paid samples. 

There are 224 drainage pit covers suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of drainage pit covers respectively. 

Drainage pit covers products are most popular in Domestic Market, Southeast Asia, and Oceania. 

You can ensure product safety by selecting from certified suppliers, including 173 with ISO9001, 91 with Other, and 29 with ISO14001 certification.