SN/T 2639-2010 "Kinematic viscosity conversion to Sabot general viscosity standard method" stipulates the standard method for converting kinematic viscosity to Sabot general viscosity. The standard specifies the scope of application, conversion principle, standardizes the data conversion process and calculation rules, covers the conversion factor at different temperatures and special situation processing, provides technical guidelines for accurately realizing the conversion between two Viscosity units and unifying the expression of viscosity data, which is convenient for the analysis and application of viscosity indicators in petroleum, chemical and other fields.