This standard specifies the detailed classification of Group G (guide rail) products in Class L (lubricants and related products), which is a part of GB7631. This standard should be understood in conjunction with GB7631.1.
GB/T 7631.11-1994 history
2014GB/T 7631.11-2014 Lubricants,industrial oils and related products (class L).Classification.Part 11:Family G(Slideways)
1994GB/T 7631.11-1994 Lubricants and related products (class L)--Part 11: Family G (slideways)