Home / Standards / GB/T 26638-2011 GB/T 26638-2011 Active Classification of complexity and equivalent coefficient of open die forgings on hydraulic press 液压机上钢质自由锻件 复杂程度分类及折合系数 Standard Type GBT ICS 77.140.85 CCS J32 Status 现行 Issue Date 2011-06-16 Implementation 2012-03-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委