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About product and suppliers:
        Alibaba.com offers 449 octg coupling products. About 74% of these are pipe fittings, 2% are shaft couplings. 

A wide variety of octg coupling options are available to you, such as alloy, carbon steel, and iron. You can also choose from equal, reducing. As well as from coupling, cross. And whether octg coupling is female, or male. 

There are 448 octg coupling suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of octg coupling respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 449 with ISO9001, 60 with ISO14001, and 58 with Other certification.