Home / Standards / GB/T 31551-2015 GB/T 31551-2015 Active Sodium silicate-bonded sand reclamation equipment—Technical requirements 水玻璃砂再生成套设备 技术条件 Standard Type GBT ICS 25.120.30 CCS J61 Status 现行 Issue Date 2015-05-15 Implementation 2016-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A