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        Alibaba.com offers 137,673 q235 square tube products. About 95% of these are steel pipes, 1% are metal building materials. A wide variety of q235 square tube options are available to you, such as 10#, 16mn, and q195. You can also choose from api, astm, and gb. As well as from structure pipe, gas pipe, and oil pipe. And whether q235 square tube is erw, cold rolled, or cold drawn. There are 137,673 q235 square tube suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of q235 square tube respectively. Q235 square tube products are most popular in Southeast Asia, Mid East, and South America. You can ensure product safety by selecting from certified suppliers, including 65,338 with ISO9001, 46,438 with Other, and 5,758 with ISO14001 certification.
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