China ST52 Alloy Seamless Steel Pipe Tube Manufacturers ...
item: ST52 Alloy Seamless Steel Pipe Tube: Standard: BS 1387, BS 6363, GB 5310-1995, GB 3087-1999, ASTM A106-2006, ASTM A53-2007, ASTM A213-2001, ASTM A312-2001, ASTM A789-2001, ANSI A312-2001, JIS G3463-2006, DIN EN 10217-1-2005, DIN 1629/3, API 5L
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