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About product and suppliers:
        Alibaba.com offers 2,744 drill pipe coupling products. About 24% of these are mining machinery parts, 16% are pipe fittings, and 1% are shaft couplings. 

A wide variety of drill pipe coupling options are available to you, such as carbon steel, carbide, and stainless steel. You can also choose from api, aisi. As well as from drill pipe, drill bit, and drill sleeve. And whether drill pipe coupling is well drilling, coal mining, or ore mining. 

There are 2,743 drill pipe coupling suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Thailand, and Taiwan, which supply 99%, 1%, and 1% of drill pipe coupling respectively. 

Drill pipe coupling products are most popular in Mid East, North America, and Africa. 

You can ensure product safety by selecting from certified suppliers, including 1,262 with ISO9001, 379 with Other, and 113 with ISO14001 certification.