Home / Standards / GB/T 22087-2008 GB/T 22087-2008 Active Arc-welded joints in aluminium and its alloys - Guidance on quality levels for imperfection 铝及铝合金的弧焊接头 缺欠质量分级指南 Standard Type GBT ICS 25.160.40 CCS J33 Status 现行 Issue Date 2008-06-26 Implementation 2009-01-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委