Home / Standards / GB/T 14999.7-2010 GB/T 14999.7-2010 Active Test methods for grain sizes，primary dendrite spacing and microshrinkage of superalloy castings 高温合金铸件晶粒度、一次枝晶间距和显微疏松测定方法 Standard Type GBT ICS 77.140.99 CCS H57 Status 现行 Issue Date 2010-12-23 Implementation 2011-09-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A