Home / Standards / GB/T 20250-2006 GB/T 20250-2006 Active Aluminum and aluminum alloys continue extruded tubes 铝及铝合金连续挤压管 Standard Type GBT ICS 77.150.10 CCS H61 Status 现行 Issue Date 2006-05-08 Implementation 2006-10-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A