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Recent content by MAKMWKL

  1. MAKMWKL

    API 661 Airfin - PWHT needed for new header nozzle?

    Good morning I am working on a Revamp project in which we will be adding new nozzles to an existing airfin heat exchanger designed to API 661. API 661, para 9.2.1 states "All carbon steel..headers shall be subjected to post weld heat treatment". Tube-to-tubesheet joints are expanded with...
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