This standard is a part of GB7631 and is applicable to formulating the general grouping system of lubricants and related products. The category name of this type of product is represented by the English letter "L".
GB/T 7631.1-1987 history
2008GB/T 7631.1-2008 Lubricants,industrial oils and related products(class L).Classification.Part 1:General
1987GB/T 7631.1-1987 Lubricants and related products (class L)--Classification--Part 1: General