[Mechanical Equipment Technology Edition] Daily Question 201709016: Refrigerator Maintenance

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This post was last edited by YORK Industrial Refrigeration on 2017-9-19 at 10:09. Starting from now, in order to enhance communication among users, a \"Question of the Day\" activity has been launched on the Mechanical Equipment Technology forum. We hope everyone will participate actively to progress and improve together! ! ! Rewards: 3 wealth for active participation, 10-15 wealth for accurate answers. This question is valid for two days; no scoring will be given after that. Question: Corrosion of heat exchangers is widespread. For testing the thickness of heat exchanger tubes in order to predict potential failures of the heat exchanger, what is the name of such testing equipment? Eddy current testing, magnetic testing, ultrasonic testing ================================ Promotion activities: Petrochemical sector – “Creative Ideas for Energy Savings” campaign (the second phase is currently in full swing) http://bbs.hcbbs.com/thread-1666758-1-1.html (Source: Haichuan Chemical Industry Forum) 2017 Coal chemical industry – “My Technical Upgrades” http://bbs.hcbbs.com/thread-1786290-1-1.html (Source: Haichuan Chemical Industry Forum)