Home / Standards / GB/T 20568-2022 GB/T 20568-2022 Active Metallic materials—Tube ring hydraulic pressure test 金属材料 管环液压试验方法 Standard Type GBT ICS 77.040.10 CCS H23 Status 现行 Issue Date 2022-10-12 Implementation 2022-10-12 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A