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About product and suppliers:
        Alibaba.com offers 37,431 brass coupling products. About 54% of these are pipe fittings, 1% are shaft couplings. 

A wide variety of brass coupling options are available to you, such as coupling, flange, and nipple. You can also choose from copper, iron, and stainless steel. As well as from male, female. And whether brass coupling is equal, or reducing. 

There are 37,259 brass coupling suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 98%, 1%, and 1% of brass coupling respectively. 

Brass coupling products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 12,275 with ISO9001, 2,945 with Other, and 1,884 with ISO14001 certification.