Home / Standards / GB/T 24524-2021 GB/T 24524-2021 Active Metallic materials—Sheet and strip—Hole expanding test 金属材料 薄板和薄带 扩孔试验方法 Standard Type GBT ICS 77.040.10 CCS H23 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A