Home / Standards / GB/T 25474-2010 GB/T 25474-2010 Active Values of nominal size for industrial process measurement and control instruments 工业自动化仪表公称通径值系列 Standard Type GBT ICS 25.040.40 CCS N10 Status 现行 Issue Date 2010-12-01 Implementation 2011-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A