Home / Standards / GB/T 45983.1-2025 GB/T 45983.1-2025 Active Rare earths thermo-chemical treatment—Part 1: Carburizing and carbonitriding 稀土化学热处理 第1部分:渗碳及碳氮共渗 Standard Type GBT ICS 25.200 CCS J36 Status 现行 Issue Date 2025-08-01 Implementation 2026-02-01 Responsible Dept 国家标准委 Drafting Unit N/A