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About product and suppliers:
        Alibaba.com offers 252,601 black steel pipe products. About 36% of these are steel pipes, 1% are stainless steel pipes, and 1% are pipe fittings. 

A wide variety of black steel pipe options are available to you, such as 10#, q195, and q235. You can also choose from astm, api, and bs. As well as from erw, hot rolled, and saw. And whether black steel pipe is structure pipe, fluid pipe, or hydraulic pipe. 

There are 252,431 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 Southeast Asia, Mid East, and North America. 

You can ensure product safety by selecting from certified suppliers, including 71,914 with ISO9001, 27,947 with Other, and 10,887 with ISO14001 certification.