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About product and suppliers:
        Alibaba.com offers 12,650 coupling union connector products. About 80% of these are pipe fittings, 2% are connectors, and 1% are plastic tubes. 

A wide variety of coupling union connector options are available to you, such as stainless steel, iron, and copper. You can also choose from welding, flange. As well as from equal, reducing. And whether coupling union connector is forged, or casting. 

There are 12,670 coupling union connector suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Taiwan, which supply 99%, 1%, and 1% of coupling union connector respectively. 

Coupling union connector products are most popular in Southern Europe, Northern Europe, and South Asia. 

You can ensure product safety by selecting from certified suppliers, including 1,889 with ISO9001, 645 with Other, and 347 with ISO14001 certification.
        
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