ALPEMA® ~ standards

Published Standards

cover These Standards, which were produced by the ALPEMA Members, are the comprehensive and authoritative reference to all the main aspects of the specification, design, manufacture, purchase and use of brazed aluminium plate-fin heat exchangers (BAHXs). The Standards comprise the following chapters

  • General description and nomenclature
  • Tolerances
  • General design, fabrication and contractual information
  • Installation, operation and maintenance
  • Mechanical standards
  • Materials
  • Thermal and hydraulic design
  • Recommended good practice
  • Special applications and exchanger peripherals

The first edition of the Standards was published in 1994 and the 4th edition is now available through the Standards Store by Accuris.

ALPEMA Responses to Requirements in API 668

A number of Exceptions and Clarifications are provided here as ALPEMA Responses to Requirements in the 1st Edition of API 668 (November 2018). They were developed collectively by the ALPEMA members.

Addendum to the Standards

Any Clarifications to the 4th Edition, and agreed responses from the ALPEMA members to Frequently Asked Questions (FAQs) that are outside the scope of the Standards, are presented in the Addendum to the 4th Edition. This Addendum, which is reviewed and updated periodically, can be downloaded here.

Specification Sheet

A typical specification sheet is available here.


Please send any ideas, suggestions or improvements to John Thome


ALPEMA®, the Brazed Aluminium Plate-Fin Heat Exchanger Manufacturers' Association represents the world's five major manufacturers of brazed aluminium plate-fin heat exchangers (BAHXs). These are very compact exchangers built to a high specification for use in air separation plants and a wide range of other petrochemical and refrigeration applications. The Association has developed a set of standards for the manufacture, installation and safe operation of BAHXs.


For further information or to give your views, contact

John Thome
ALPEMA Chairman
Tel : +41 (0)21 693 59 81
Fax : +41 (0)21 693 59 60

Secretariat services to ALPEMA are provided by HTRI.

ALPEMA and the ALPEMA logo are registered trademarks of Aluminium Plate-Fin Heat Exchanger Manufacturers' Association in Europe and other countries.

©Aluminium Plate-Fin Heat Exchanger Manufacturers' Association. All rights reserved.