Asme b16.5

Can anybody tell me that does ASME B16.5 recognises metric bolts for flanges ??
I designed pressure vessel as per ASME section VIII div. 1. Nozzle flanges are according to B16.5. I used metric nut-bolts. While design review, SGS given remark that you can't use metric bolts because B16.5 recognises UNC bolts. But I have doubt about this.
Can anybody tell with prof ?

Thanks & Regards,
Amit
+91 9820487456

Estimado amigo, es cierto, ASME B16.5 no reconoce las unidades métricas para lo que usted menciona. En el "scope" de código en 1.1 está la respuesta que busca.
Saludos
fluence377

Fluence, thanks for the reply. Can you please reply in english. Actually I don't understand your reply.
Please.

Dear friend, ok, I try it in english, ASME B16.5 says in "scope", point 1.1 :
(1) flanges with rating class designations 150, 300,400, 600, 900, and 1500 in sizes NPS 1⁄through NPS 24 and flanges with rating class designation 2500 in sizes NPS 1⁄2 through NPS 12, with requirements given in both metric and U.S. Customary units with [U]diameter of bolts and flange bolt holes expressed in inch units[/U]
(2) flanged fittings with rating class designation 150 and 300 in sizes NPS 1⁄2 through NPS 24, with requirements given in both metric and U.S. Customary units [U]with diameter of bolts and flange bolt holes expressed in inch units[/U]
(3) flanged fittings with rating class designation 400, 600, 900, and 1500 in sizes NPS 1⁄2 through NPS 24 and flanged fittings with rating class designation 2500 in sizes 1⁄2 through NPS 12 that are acknowledged in Nonmandatory Appendix E in [[U]U]which only U.S. Customary[/U] units are provided[/U]

amitss_sam,

SGS's remark that "you can't use metric bolts because B16.5 recognises UNC bolts" is correct. So you must use UNC Bolts.

Thanks.