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About product and suppliers:
        Alibaba.com offers 219,071 black steel pipe products. About 36% of these are steel pipes, 1% are plastic tubes, and 1% are stainless steel pipes. 

A wide variety of black steel pipe options are available to you, such as 10#, 20#, and 16mn. You can also choose from api, astm, and bs. As well as from ce, ul, and bsi. And whether black steel pipe is structure pipe, fluid pipe, or gas pipe. 

There are 218,882 black steel pipe suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Singapore, and Taiwan, which supply 98%, 1%, and 1% of black steel pipe respectively. 

Black steel pipe products are most popular in South America, Southeast Asia, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 97,433 with ISO9001, 29,799 with Other, and 11,289 with ISO14001 certification.
        
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