I have a brazed aluminium plate-fin heat exchanger for air drying. The internal volume is approx. 65 l. The heat exchanger is assembled by several parallel sections. The diameters of those sections are 400 mm x 10 mm x 950 mm.
After passing these sections the air is collected in a round profile with a diameter of 230 mm and then it goes back into the heat exchanger. The profiles are connected to the heat exchanger by welding.
The working pressure of the heat exchanger is 16 bar.
Do I need an ASME stamp for this component? The manufacturer is not able to produce the component according to ASME code. Are there any other options?

Thanks in advance for your reply

The manufacturer is not able if it doesn't have the certificate of authorization. Or if the material is not allowed by the Code, in which case it is not manufacturer's limit but engineering problem. Otherwise ASME does not prohibit any design which cannot be produced following the formulae given. Read the FOREWORD

This Code contains mandatory requirements, specific
prohibitions, and nonmandatory guidance for construction
activities. The Code does not address all aspects of these
activities and those aspects which are not specifically
addressed should not be considered prohibited. The Code
is not a handbook and cannot replace education, experience,
and the use of engineering judgment. The phrase
engineering judgment refers to technical judgments made
by knowledgeable designers experienced in the application
of the Code. Engineering judgments must be consistent
with Code philosophy and such judgments must never
be used to overrule mandatory requirements or specific
prohibitions of the Code.

Mauro

Have you checked to see if your design limitations for ASME can be solved by utilizing Code Cases 2247, 2350 and 2538?

In the event there is an urgent need for alternative rules concerning materials or construction not covered by existing Boiler and Pressure Vessel Code rules, or for early implementation of an approved Code revision, ASME may issue a Code Case.

http://www.asme.org/Codes/Publications/BPVC/Code_Cases_Boiler_Pressure.cfm
http://www.asme.org/Codes/DevelopmentCommittees/Interacting_Codes_Standards.cfm

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A question properly stated is a question half solved.