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About product and suppliers:
        Alibaba.com offers 9,106 first quality standard products. About 1% of these are steel pipes, 1% are scaffoldings. 

A wide variety of first quality standard options are available to you, such as 10#, 16mn, and 20#. You can also choose from api, astm, and din. As well as from erw, hot rolled, and cold drawn. And whether first quality standard is round, square, or oval. 

There are 9,132 first quality standard suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Pakistan, and France, which supply 94%, 3%, and 1% of first quality standard respectively. 

First quality standard products are most popular in Mid East, Africa, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 1,303 with ISO9001, 753 with Other, and 283 with ISO/TS16949 certification.
        
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