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About product and suppliers:
        Alibaba.com offers 289 concentric reducing socket products. About 88% of these are pipe fittings. 

A wide variety of concentric reducing socket options are available to you, such as pp-r, stainless steel, and carbon steel. You can also choose from coupling, nipple, and elbow. As well as from female, male, and welding. And whether concentric reducing socket is casting, or forged. 

There are 290 concentric reducing socket suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Greece, which supply 96%, 1%, and 1% of concentric reducing socket respectively. 

Concentric reducing socket products are most popular in Mid East, Southeast Asia, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 148 with ISO9001, 102 with Other, and 36 with ISO14001 certification.