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GB/T 22087-2008 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 - 英文版 |
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GB/T 19418-2003 Arc-welded joints in steel--Guidance on quality levels for imperfections 钢的弧焊接头 缺陷质量分级指南 - 英文版 |
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