Home / Standards / GB/T 3142-2019 GB/T 3142-2019 Active Standard test method for determination of load-carrying capacity of lubricants—Four-ball method 润滑剂承载能力的测定 四球法 Standard Type GBT ICS 75.100 CCS E34 Status 现行 Issue Date 2019-03-25 Implementation 2019-10-01 Responsible Dept 国家标准委 Drafting Unit N/A