Home / Standards / GB/T 9444-2007 GB/T 9444-2007 Abolished Magnetic particle testing for steel castings 铸钢件磁粉检测 Standard Type GBT ICS 19.100;77.140.80;77.040.20 CCS J31 Status 废止 Issue Date 2007-08-23 Implementation 2008-01-01 Responsible Dept 国家标准委 Drafting Unit N/A