["GB/T 3379直缝和螺旋焊缝",,"GB/T 3371中的电熔焊管直缝和螺旋焊缝，我在做piping class的时候需要把直缝或者螺旋焊缝写出来吗？请高手指教，谢谢！",,"Welche Klassen zu noten Sie anzuzeigen?",,"Natürlich, beide Verarbeitungsweisen sind verschieden, und die Prüfungen unterscheiden sich ebenfalls."]

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