We are building a M2 Cat.A weldment. TP278 18.104.22.168.2 permits Partial Penetration joints within the same design group to be interchanged without drawing changes provided weld efficiencies are not reduced. Is there any allowances for Full Penetration joints? Could I substitute a C2V6 for a C2V5 without a drawing change? Our Weld accessibility will be increased with a C2V6. The drawing requires Records IAW 4.1.3 even though it is a M2 and our customer is not entertaining drawing changes. Thanks for your help.
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