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About product and suppliers:
        Alibaba.com offers 219,699 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#, 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 219,547 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, Mid East, and North America. 

You can ensure product safety by selecting from certified suppliers, including 69,975 with ISO9001, 27,176 with Other, and 10,524 with ISO14001 certification.