Powder Coating in St Louis

We offer an automated industrial powder coating line with reciprocating guns (for cost savings), a high production line, as well as a manual line for meticulous parts and small powder coating runs.

Microfinish powder coating in St Louis using electrostatic particles

Powders in Stock

We carry powder coat supplies
for the following finishes:

  • Textured and Wrinkle Finishes
  • Chemical Resistant Powders
  • High Gloss—Low Gloss
  • UV Resistant Powders
  • A Rainbow of Colors


  • Automotive
  • Deere
  • CAT
  • GM

Additional Services

  • Masking, Capping, Plugging
  • Packaging
  • Labeling

Powder coating is a process in which small polymer resin particles are electrostatically charged (+) and then sprayed onto parts that are grounded (-).  The charged particles are attracted to and subsequently attach themselves to the grounded parts, resulting in a high-efficiency coating process that offers excellent corrosion resistance.

Popular in North America for over 40 years, powder coating represents approximately 85% of all painted finishes in the industrial finishing market.  Both functional and decorative, it provides desirable visual enhancements performance and as an industry leader in the St Louis area, Microfinish is your first industrial powder coating company choice in Missouri and Illinois.

Advantages & Benefits

More durable than liquid paint, the primary benefit of powder coating is the corrosion resistance properties it adds to a part.  Furthermore, powder coating produces an aesthetically pleasing finish, which is extremely resistant to chipping, scratching and marring.  Depending on the selected chemistry, specially formulated powders can include anti-bacterial and chemical resistance properties and are available in nearly unlimited colors, effects and textures.

Environmental & Safety Advantages
Liquid coatings use solvents that release large amounts of VOC (volatile organic compounds) and HAP’s (hazardous air pollutants) which can pose a hazard to the workers applying the powder coating as well as to the environment.  Since powder coating contains no solvents, it is by far safer in the workplace and nearly all powder coatings are not declared to be hazardous waste.  In fact, powder coating qualifies for the U.S. Green Building Council’s LEED (Leadership in Energy and Environmental Design) program.

Thanks to its dry application process, powder coating is an efficient finishing technique. Overspray material can be reclaimed and reused resulting in reduced waste (which may be disposed of safely, with virtually no environmental impacts).  Due to the ability of powder coating material to be recycled, utilization can surpass 95%, versus a much lower percentage for liquid finishing processes.  The entire process lends itself to lower operating costs, reduced waste, and safer production environments.

Powder Coating Colors & Applications
When it comes to colors, “we paint the rainbow”.  Microfinish’s powder coating specialists offer you a vast palette of colors for your powder coated parts to achieve just the look that you want.  When compared to other finishing methods (which sometimes don’t have more than one surface effect), a powder coat gives you options by way of low, medium and high glosses, as well as textured and wrinkled finishes.  It can be applied to steel, aluminum, iron, or zinc parts. Coating with powder is used every day in a wide variety of component parts in almost every industry including:


  • Lawn & Garden
  • Medical
  • Recreational
  • Agricultural
  • Automotive
  • HVAC
  • Medical
  • Appliance
  • Electrical
  • Agricultural


  • Fabricated Assemblies
  • Stampings
  • Die Castings
  • Wire Forms
  • Castings
  • Cabinets
  • Tubing
  • Weldments

How The Powder Coating Process Works

Before the parts are coated, they are placed on a conveyor line at our Warrenton powder coat finishing facility (in the Greater St Louis, Missouri area). The parts are washed to remove light processing oils, loose soils and dirt. They are then treated with iron phosphate and if required, sealed with a non-chrome seal before they are dried.

Parts are then coated with the use of electrostatic Tribomatic coating spray guns (also called “Tribo” guns) as the powder is propelled toward the grounded part by forced air.  Preheating of the part may or may not be part of the process depending on the type of finish desired.

Following the coating stage, coated parts enter a large oven to be cured.  Ovens are heated between 375 to 425 degrees Fahrenheit for 15-25 minutes (depending on the specification of the powder) and once in the cure oven, particles melt and cross link, becoming one continuous coating that gives a high quality, uniform, and durable finish.

Power Coat Specifications

Microfinish powder coats for Tier I suppliers to General Motors and has been certified by CAT as well as by John Deere (some of the most stringent requirements in the industry).

  • PACCAR – Compliant with QS-9000 or ISO/TS-16949 requirements
  • John Deere – Compliant with JDM F17
  • CAT-Compliant with 1E4520H, 1E2731A, 1E1950A, and 1E2001, just to list a few specs

Additional Services
Our full service industrial powder coat services don’t just stop at the process level. Microfinish also offers value-added services including masking, labeling and packaging.

Looking for powder coat, nickel/chrome, or zinc plating services? Look no further! For pricing, please call us at 314-849-8181 and we’ll help you to determine the right options for your project. Don’t go elsewhere without getting a powder coating price from the specialists at Microfinish!