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About product and suppliers:
        Alibaba.com offers 9,491 5s standard products. About 1% of these are steel pipes. 

A wide variety of 5s standard options are available to you, such as 10#, 20#, and api j55. You can also choose from structure pipe, oil pipe. As well as from api, astm, and din. And whether 5s standard is hot rolled, or cold drawn. 

There are 9,491 5s standard suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of 5s standard respectively. 

s standard products are most popular in North America, Domestic Market, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 2,317 with ISO9001, 844 with ISO/TS16949, and 696 with Other certification.