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About product and suppliers:
        Alibaba.com offers 3,324 drill pipe coupling products. About 23% of these are mining machinery parts, 17% are pipe fittings, and 1% are shaft couplings. 

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

There are 3,329 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, Africa, and South America. 

You can ensure product safety by selecting from certified suppliers, including 1,829 with ISO9001, 536 with Other, and 116 with ISO14001 certification.
        
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