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About product and suppliers:
        Alibaba.com offers 2,355 single coupler products. About 7% of these are ladder & scaffolding parts, 2% are pipe fittings, and 2% are scaffoldings. 

A wide variety of single coupler options are available to you, such as coupling, union. You can also choose from plastic, carbon steel, and stainless steel. As well as from female, male. And whether single coupler is reducing, or equal. 

There are 2,359 single coupler suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and South Korea, which supply 97%, 1%, and 1% of single coupler respectively. 

Single coupler products are most popular in North America, Mid East, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 1,129 with ISO9001, 311 with Other, and 91 with ISO14001 certification.