This standard specifies the detailed classification of lubricants in group P (air tools) and lubricants for machines powered by compressed air in category L (lubricants and related products). This standard covers only lubricants that come into contact with compressed air. Does not include lubricants used in air tools or other lubrication points in air machinery (example: internal bearings, gears, etc.). This standard should be understood in conjunction with GB/T 7631.1.
GB/T 7631.16-1999 history
1999GB/T 7631.16-1999 Lubricants and related products(class L) classification--Part: Family P (Pneumatic tools)