Home / Standards / GB/T 3821-2015 GB/T 3821-2015 Active Small and medium power internal combustion engines—Cleanliness limits and measurements 中小功率内燃机 清洁度限值和测定方法 Standard Type GBT ICS 27.020 CCS J91 Status 现行 Issue Date 2015-12-10 Implementation 2016-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A