Home / Standards / GB/T 226-2015 GB/T 226-2015 Active Test method for macrostructure and defect of steel by etching 钢的低倍组织及缺陷酸蚀检验法 Standard Type GBT ICS 77.040.99 CCS H24 Status 现行 Issue Date 2015-09-11 Implementation 2016-06-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A