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About product and suppliers:
        Alibaba.com offers 8,088 first quality standard products. About 3% of these are bathroom sinks, 1% are steel pipes, and 1% are windows. 

A wide variety of first quality standard options are available to you, such as api j55, 10#, and 20#. You can also choose from api, astm, and bs. As well as from ce, ce / eu, and iso. And whether first quality standard is hot rolled, erw, or cold drawn. 

There are 8,125 first quality standard suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Pakistan, and France, which supply 94%, 2%, 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 1,335 with ISO9001, 800 with Other, and 282 with ISO/TS16949 certification.
        
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