2017SH/T 0189-2017 Four-ball method for determination of anti-wear properties of lubricating oils
1992SH/T 0189-1992 Determination of anti-wear performance of lubricating oil (four-ball machine method)
SH/T 0189-1992 Determination of anti-wear performance of lubricating oil (four-ball machine method) was changed to NB/SH/T 0189-2017 Determination of anti-wear performance of lubricating oil by four-ball method.