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About product and suppliers:
        Alibaba.com offers 1,069 steel tube internal thread products. About 24% of these are steel pipes, 10% are stainless steel pipes. 

A wide variety of steel tube internal thread options are available to you, such as astm, aisi, and jis. You can also choose from a53(a,b), 20#, and 10#. As well as from iso, bv, and ce. And whether steel tube internal thread is erw, seamless, or efw. 

There are 1,074 steel tube internal thread suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 99%, 1%, and 1% of steel tube internal thread respectively. 

Steel tube internal thread products are most popular in South America, Eastern Europe, and North America. 

You can ensure product safety by selecting from certified suppliers, including 735 with ISO9001, 106 with Other, and 16 with ISO14001 certification.
        
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