Home / Standards / GB/T 40416-2021 GB/T 40416-2021 Active Technical requirements of gravel aggregate production complete equipment 砂石骨料生产成套装备技术要求 Standard Type GBT ICS 91.110 CCS Q 92 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国建筑材料联合会 Drafting Unit N/A