Home / Standards / GB/T 25138-2024 GB/T 25138-2024 Active Standard silica sand for checking foundry binder 检定铸造粘结剂用标准硅砂 Standard Type GBT ICS 91.100.15 CCS J31 Status 现行 Issue Date 2024-03-15 Implementation 2024-10-01 Responsible Dept 国家标准委 Drafting Unit N/A