L7M bolting over 2.1/2" diameter
L7M bolting over 2.1/2" diameter
(OP)
Hi all,
I wonder if someone could share with me if had experience with L7M (grade M) bolting over 2.1/2" in size with ASME VIII Div.1 code and stamped heat exchangers
The ASME II Part. D limits the allowable stresses to 2.1/2" although the ASME II Part.A for the SA 320 L7M bolting (table 1 - Mechanical requirements) states that this limit shall not intended as absolute limits beyond which bolting material could not be certified to the specification.
So, it seems to me that there would be the possibility to use L7M bolts eben with diameter over 2.1/2" inch, so admitted by the code also for stamped heat ngers.
I would appreciate if you could support me on this field.
thanks a lot to everybody in advance
I wonder if someone could share with me if had experience with L7M (grade M) bolting over 2.1/2" in size with ASME VIII Div.1 code and stamped heat exchangers
The ASME II Part. D limits the allowable stresses to 2.1/2" although the ASME II Part.A for the SA 320 L7M bolting (table 1 - Mechanical requirements) states that this limit shall not intended as absolute limits beyond which bolting material could not be certified to the specification.
So, it seems to me that there would be the possibility to use L7M bolts eben with diameter over 2.1/2" inch, so admitted by the code also for stamped heat ngers.
I would appreciate if you could support me on this field.
thanks a lot to everybody in advance





RE: L7M bolting over 2.1/2" diameter
Which is why material testing specialists are in business. On the other hand, you could go to the maximum bolt diameter and put in more than required to hold you to the letter of the law under the code.
Either way, your choice.
Regards,
Cockroach