This document stipulates the evaluation index system, evaluation methods and grade identification for the quality classification and evaluation of spring steel hot-rolled and forged round steel products. This document is applicable to the quality classification and evaluation of spring steel hot-rolled and forged round steel (hereinafter referred to as spring steel)
T/SSEA 0348-2024 history
2024T/SSEA 0348-2024 Spring steel product quality classification and evaluation methods Part 1: Hot rolled and forged round steel