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About product and suppliers:
        Alibaba.com offers 237 concentric reducer size products. About 81% of these are pipe fittings. 

A wide variety of concentric reducer size options are available to you, such as iron, carbon steel, and plastic. You can also choose from welding, flange, and female. As well as from elbow, bushing, and coupling. And whether concentric reducer size is reducing, or equal. 

There are 237 concentric reducer size suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of concentric reducer size respectively. 

Concentric reducer size products are most popular in Domestic Market, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 91 with ISO9001, 52 with Other, and 19 with ISO14001 certification.