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          API steel pipe
          
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          Alloy steel pipe
          
- astm a 335 gr p22
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          One of the Top 500 enterprises in China foreign trade
QCCO was approved as a member of “China Association for Contracting Projects Abroad “and granted a membership certificate on Sep 28,2005; “Credibility Rating AAA certificate in Foreign Trade” was granted to QCCO by China Shippers’ Association

CHN Steel Pipe
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