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STM DIN GB JIS ASTM A513-2007 DIN EN 10208-1-1998 MS rectangular pipe Feature: Standard: ASTM, DIN, GB, JIS, ASTM A513-2007, DIN EN 10208-1-1998, DIN EN 10216-1-2004, GB/T 3094-2000, JIS G3465-2006, ...