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About product and suppliers:
        Alibaba.com offers 127,749 steel coupling products. About 29% of these are pipe fittings, 6% are shaft couplings. 

A wide variety of steel coupling options are available to you, such as coupling, union. You can also choose from carbon steel, iron, and steel. As well as from female, welding, and male. And whether steel coupling is casting, or forged. 

There are 126,866 steel coupling suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Japan, which supply 98%, 1%, and 1% of steel coupling respectively. 

Steel coupling products are most popular in North America, Mid East, and South America. 

You can ensure product safety by selecting from certified suppliers, including 48,530 with ISO9001, 18,314 with Other, and 6,612 with ISO14001 certification.