Home / Standards / GB/T 38440-2019 GB/T 38440-2019 Active Test method for penetration strength of cast iron 铸铁楔压强度试验方法 Standard Type GBT ICS 77.040.10 CCS J31 Status 现行 Issue Date 2019-12-31 Implementation 2020-07-01 Responsible Dept 国家标准委 Drafting Unit N/A