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About product and suppliers:
        Alibaba.com offers 244 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 carbon steel, stainless steel. You can also choose from welding, flange. As well as from equal, reducing. And whether concentric reducer size is forged, or casting. 

There are 244 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 94 with ISO9001, 51 with Other, and 18 with ISO14001 certification.