This standard specifies the production and inspection requirements for the following six levels of alloy steel forgings: Level A, Level B and Level C forgings, which are annealed, normalized, normalized and tempered; Level D, Level E and Level F forgings , for annealing, normalizing, normalizing and tempering and quenching and tempering. This standard applies to grade A~F alloy steel forgings for railway rolling stock and other railway equipment.
TB/T 3014-2001 history
2019TB/T 2944.2-2019 Forgings for rolling stock - Part 2: Alloy steels