Home / Standards / GB/T 17879-2023 GB/T 17879-2023 Active Gear—Surface temper etch inspection after grinding, chemical method 齿轮 磨削后表面回火的化学浸蚀检验 Standard Type GBT ICS 21.200 CCS J17 Status 现行 Issue Date 2023-08-06 Implementation 2023-08-06 Responsible Dept 国家标准委 Drafting Unit N/A