High-Pressure Piping

Power & Process Piping

Ammonia Refrigeration

Food Grade Piping

DOT Piping

Industrial Plumbing

Underground Utilities

Power and Process Piping

PLAAS INC is your one-stop-shop for mechanical and process piping. We have the knowledge and expertise to design, engineer, estimate and safely install mechanical systems.

Our extensive experience working with a variety of materials, including high-pressure piping (HPP), steam, condensate, ammonia refrigeration, pressure vessels, boilers and DOT piping gives our customers confidence in our services. And no matter the specific requirements, we customize all fabricating and welding projects based on the unique needs of our customers.


From field construction to shop fabrication, PLAAS INC offers customers full-service turn-key mechanical construction including the installation and integration of power and process piping equipment and supporting systems. 


PLAAS INC uses highly trained pipe-fitters and certified pipe welders to maintain and fabricate refrigeration systems, exceeding refrigeration codes and standards. 

Industrial Refrigeration Services include: 

  • Ammonia
  • HFC, HCFC and CO2
  • Design and Engineering
  • Installation
  • Fabrication
  • Service and Maintenance
  • Startup
  • Packages Refrigeration System and Equipment 


PLAAS INC is a licensed Minnesota High-Pressure Piping (HPP) contractor. 

Steam is a very efficient and easily controlled heat transfer medium. PLAAS INC offers steam piping experience with more than 25 Minnesota High-Pressure Piping licensed journeymen. Prior to working with high-pressure piping systems (steam, condensate, bioprocess piping and ammonia) in Minnesota, the state requires contractors to have a master HPP license and licensed journeyman, which PLAAS INC is certified in.

Minnesota high-pressure piping is defined as:  

  • Steam and condensate piping operating at 15 PSI or more. 
  • Ammonia (717) refrigeration piping systems
  • Bioprocess and any heating media piping system designed to operate at greater than 250°F and 30 PSI combined.
  • High-pressure and high-temperature fluids designed to operate at more than 250°F and 30 PSI gauge used for heating


From Nestle to ADM, General Mills to Tyson Foods, PLAAS INC had delivered exemplary food-grade piping services, construction and maintenance support in the food and beverage industry. Proper quality control in food-grade piping is essential, and a specity of PLAAS INC. 


To ensure safe, reliable, and environmentally sound work, PLAAS INC strictly adheres to the U.S. Department of Transportation’s (DOT) Qualification of Pipeline Personnel Regulation and complies with the Office of Pipeline Safety of the U.S. Department of Transportation’s (DOT) Qualification of Pipeline Personnel Regulations (49 CFR Part 192 Subpart N and Part 195 Subpart G).


Since 1974, our design and installation services include retrofit, remodel, and new-construction water service systems. Our designers work with our customer’s architects and contractors to develop efficient and economical solutions using both old and new plumbing techniques. We provide complete cleaning, repair, and replacement piping for all drain, sewer, and water services. 


PLAAS INC provides gas, water and sewer unground utility services.