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About product and suppliers:
        Alibaba.com offers 28,921 50mm steel tube products. About 35% of these are steel pipes, 9% are stainless steel pipes, and 1% are refrigerator parts. 

A wide variety of 50mm steel tube options are available to you, such as 16mn, 10#, and 20#. You can also choose from astm, jis, and din. As well as from structure pipe, oil pipe, and fluid pipe. And whether 50mm steel tube is bsi, api, or ce. 

There are 28,844 50mm steel tube suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Taiwan, which supply 99%, 1%, and 1% of 50mm steel tube respectively. 

0mm steel tube products are most popular in North America, Domestic Market, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 11,245 with ISO9001, 4,582 with Other, and 1,523 with ISO14001 certification.