Dunn Heat Exchangers, Inc. is affiliated with the following organizations:

• American Society Of Mechanical Engineers
  
• Association of Chemical Industry of Texas
  
• Clean Star Texas City
  
• Contractors Safety Council of Texas City
  
• Houston Heat Exchangers Society
  
• Houston Plate Fabricators Association
  
• National Board of Boiler and Pressure Vessel Inspectors
  
• National Safety Council
  
• OSHA's Safety and Health Achievement Recognition Program (SHARP)
  
• Texas Association of Business
  
• Texas Association of Environmental Professionals
  
• Texas Safety Association
  
• Tubular Exchanger Manufacturers Association, Inc.