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About product and suppliers:
        Alibaba.com offers 545 octg coupling products. About 78% of these are pipe fittings, 2% are shaft couplings. 

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

There are 543 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 Mid East, South America, and Africa. 

You can ensure product safety by selecting from certified suppliers, including 545 with ISO9001, 68 with Other, and 42 with ISO14001 certification.