B16.5, Section VIII, and dual cert. SS
B16.5, Section VIII, and dual cert. SS
(OP)
Consider a flange, SA-182 F304 150# class, having a rating at 1000°F of 20PSI. Now what arrives at your shop is certified as SA-182 F304/304L.
If my dual grade philosophy is to consistently use the stress values for the straight grade material when considering pipe and plate, am I justified in using the RATING for the SA-182 F304 flange material in keeping with this philosophy?
If my dual grade philosophy is to consistently use the stress values for the straight grade material when considering pipe and plate, am I justified in using the RATING for the SA-182 F304 flange material in keeping with this philosophy?
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Fitter, happier, more productive





RE: B16.5, Section VIII, and dual cert. SS
RE: B16.5, Section VIII, and dual cert. SS
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Fitter, happier, more productive
RE: B16.5, Section VIII, and dual cert. SS
Regards,
Mike
RE: B16.5, Section VIII, and dual cert. SS
Dual certified is just that. Its your choice which material certification you wish to consider - but for Code purposes you have to choose one and stick with it. For example, you can't list a flange on Code paperwork as dual certified and use a "straight" grade rating for pressure and "L" grade for welding procedure.
See also II-D Appendix 7.
jt