Flange rating for 316/316L dual certification

[gr2vessels]

I was unable to find this topic clarified in previous posts. Which table should we use for a dual certified 316/316L flange? Table 2-2.2 or Table 2-2.3 of ASME B16.5?

 

[XL83NL]

Table 2-2.2 may be used, provided the flange is dual stamped ASTM A 182. Refer to e.g. II-D, app. 7.

 

[gr2vessels]

Thanks XL85NL, I was hoping for a solid ammunition against a recalcitrant Client who simply asked 'Convince me' which table to use. I'll have to beat him up, no other way.
Cheers,
gr2vessels

 

[XL83NL]

We've had these discussions in the past. It seems now most people are aware of the fact of dual-certification and how to get around it.
If you really need to convince him, tell him '316' is in the designation '316/316L'. He cant ignore that.
Otherwise, draw a picture of the chemical range of elements in 316 and 316L, show the overlap, and explain why you can benefit from the 'stronger 316', and chemically more attractive L-grade 316L.

 

[gr2vessels]

Thanks again, It's actually the Client who needs convertion. He's willing, but plays the timid virgin...
Cheers,
gr2vessels