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        Alibaba.com offers 42,098 square steel piping products. About 45% of these are steel pipes, 1% are plastic tubes. A wide variety of square steel piping options are available to you, such as 10#, a53(a,b), and 16mn. You can also choose from astm, api, and bs. As well as from structure pipe, hydraulic pipe, and fluid pipe. And whether square steel piping is erw, cold drawn, or saw. There are 42,098 square steel piping suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of square steel piping respectively. Square steel piping products are most popular in Domestic Market, Southeast Asia, and Mid East. You can ensure product safety by selecting from certified suppliers, including 21,963 with ISO9001, 10,223 with Other, and 1,060 with ISO14001 certification.
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