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Cheaper price,Carbon seamless steel pipe/tube
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ASTM A106 low carbon 20 inch seamless steel pipe
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1/2",3/4",1",1 1/4",1 1/2",2",2 1/2",3",3 1/2",4",4 1/2",5",6",8",10",12",14" GB 20#,45#,16Mn Seamless Steel Pipes and Tubes
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st 52.4 steel st 37 carbon seamless steel pipe/tube st37
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China Market Black Iron Hot Rolled Carbon Seamless Steel Pipes Technical Pipe
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