Home / Standards / GB/T 7631.4-1989 GB/T 7631.4-1989 Active Lubricants and related products (class L)--Classification--Part 4:Family F (Spindlebearings,bearings and associated clutches) 润滑剂和有关产品(L类)的分类 第4 部分:F组 (主轴、轴承和有关离合器) Standard Type GBT ICS 75.100 CCS E30 Status 现行 Issue Date 1989-03-31 Implementation 1990-04-01 Responsible Dept 国家标准委 Drafting Unit N/A