焊缝采用多种焊接方法或者对焊接方法有特殊要求时标注,一般不标注。
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对一般焊缝,只标注基本符号,不标注坡口尺寸,坡口尺寸由工艺决定;对有强度、气密性等要求的焊缝或受结构限定的特殊坡口,应标注坡口尺寸,必要时用图示法绘制坡口结构图。
A. 对
B. 错
对接焊缝有效厚度S由工艺保证,焊后无法测量,一般不标注。
A. 对
B. 错
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