Home / Standards / GB/T 3310-2023 GB/T 3310-2023 Active Ultrasonic testing method of copper and copper alloy bars 铜及铜合金棒材超声检测方法 Standard Type GBT ICS 77.040.20 CCS H26 Status 现行 Issue Date 2023-11-27 Implementation 2024-06-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A