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GB/T 226-2015 Test Method for Macrostructure and Defect of Steel by Etching Standard Information Standard Number: GB/T 226-2015 Replaces: GB/T 226-1991 Release Date: September 11, 2015 Implementation Date: June 1, 2016 Proposed by: China Iron and Steel Association Managed by: National Steel Standardization Technical Committee (SAC/TC 183) Scope This standard specifies three test methods for […]