GB/T 1800.1 Geometrical product specifications (GPS)—ISO code system for tolerances on linear sizes—Part 1: Basis of tolerances, deviations and fits*, 2020-04-28 Update
GB/T 2828.1 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)*, 2013-02-15 Update
GB/T 3274 Hot-rolled plates、sheets and strips of carbon structural steels and high strength low alloy structural steels*, 2017-02-28 Update
GB/T 6974.2 Cranes—Vacabulary—Part 2: Mobile cranes*, 2017-10-14 Update