Home / Standards / GB/T 9443-2019 GB/T 9443-2019 Active Steel and iron castings—Liquid penetrant inspection 铸钢铸铁件 渗透检测 Standard Type GBT ICS 77.040.20 CCS J31 Status 现行 Issue Date 2019-08-30 Implementation 2020-03-01 Responsible Dept 国家标准委 Drafting Unit N/A