Home / Standards / GB/T 4156-2020 GB/T 4156-2020 Active Metallic materials—Sheet and strip—Erichsen cupping test 金属材料 薄板和薄带 埃里克森杯突试验 Standard Type GBT ICS 77.040.10 CCS H23 Status 现行 Issue Date 2020-03-31 Implementation 2020-10-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A