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Up Topic American Welding Society Services / Certifications / QW-409.4 ASME IX
- - By iwe Date 09-21-2005 05:08
In ASME IX for these variable(QW-409.4) there is Nonessential and Sup. Essential at the same time,so when shall we consider it Nonessential and when Sup.essential?
Parent - By jon20013 (*****) Date 09-21-2005 08:21
Non-Essential whenever notch toughness requirements are NOT imposed by construction code.

Supplimental Essential when notch toughness IS imposed by construction code.
Up Topic American Welding Society Services / Certifications / QW-409.4 ASME IX

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