Powder coating steel

Powder coating steel for an increased protection

Steel, like many other metals is vulnerable to corrosion. Corrosion makes buildings and infrastructure unstable and unsafe. A thin, durable film coated on steel ensures that this corrosion is prevented at surface level. How does powder coating work ? By charging finely ground particles of resin and pigment with static electricity, a magnetic attraction is generated which ensures an even distribution of powder coating on steel. In addition to the durable effect, powder coating steel can enhance the appearance of the metal with a consistent finish guaranteed.

This article outlines the different powder coating methods and the pros and cons of powder coating

6 reasons to powder coat steel

The wet paint vs powder coat debate has been swinging towards powder coat as industry specialists and individuals alike are reaping the benefits of powder coating such as the direct transport and usability of coated items. Furthermore, coated materials have a long lifespan, are easy to clean and offer amazing protection against UV-damage (Polyurethane or hybrid powders).

Additionally, there are more benefits of powder coating steel;

  • Durability: Powder coating enhances the steel’s durability and allows the steel to withstand damages better
  • Anti-corrosion: Once a steel surface is coated it is protected from moisture and humidity which causes rust
  • Chip-resistance: Powder coating provides added protection from cracking, peeling, chipping and scratching
  • Little to no maintenance: The durable properties of powder coated steels reduces maintenance costs to nearly zero
  • Long lasting finish and colors: Colors stay more vibrant and brighter than conventional paint
  • Environmentally safe: Powder paints do not contain solvents and therefore when heated do not emit harmful fumes or substances into the environment

This powder coating steel technique is used in and around the following applications:


What type of powder coating is suitable and for what application?

Essentially, there are three sorts of powder coatings for steel:

Epoxy powdercoating – Interior use

Powder coating steel on sports equipment

Epoxy powdercoating is used on sports equipment

An epoxy powdercoating provides outstanding protection against moisture and chemicals. Conversely, an epoxy based powder coating provides poor resistance to UV light thus effectively making only suitable for products that are used indoors.

  • Ceiling Panels
  • Display Shelving
  • Heaters
  • Household Goods
  • Instrument Casings
  • Internal Vehicle Components
  • Sports Equipment
  • Tubular Steel Furniture
  • Wirework

Polyester powdercoating – Exterior and interior use

Polyester based powdercoatings are suitable for both interior and exterior use and come in a one- or two layer system. The coating provides good protection from UV light and is therefore suitable for outdoor products.

  • Camping Equipment
  • Electrical Cabinets
  • Garden Tools
  • Partitioning
  • Radiators

Hybrid (epoxy polyester) powder – Consumer products

Products coated with hybrid powdercoatings come with a tough decorative finish. The superior heat stability and exterior durability is suitable for a wide range of applications.

  • Cookers
  • Domestic Appliances
  • Light fittings
  • Office Furniture

Steel building

Before you coat metals: Important things to know

In order to guarantee the durable and long lasting effect of the powdercoating it is essential to prepare properly. Black steel goes undergoes intensive and mechanic preparation. However you can also opt for chemical preparation using a solvent agent such as Diggers Acetone available at your nearest Bunnings Warehouse. Furthermore, the parts of the steel structure to be powder coated should meet specific requirements.

The smoothness of the surface is vital to the quality of the coating result.

The smoother the surface, the better the result. Consequently, it is imperative to have surfaces with no sharp edges and points.

3 tips from the coating experts

  1. All parts should have a good steel quality;
  2. The in- and outlets of the parts need to be brought in in the right manner;
  3. The material to be coated needs to be free from impurities that cannot be removed by a chemical preparation

A chemical preparation or sand blasting can ensure the steel is free from;

  • paint and/or varnish (residues)
  • excess fat or silicone-containing wax sprays
  • sealants
  • thick oil and/or fat layersHahaha
  • markings with grease chalk, paint or markers
  • adhesives

Your local specialists for powdercoating your metals

New Zealand has a wide selection of steel powdercoating specialists that can produce for your project. Here is a list of 4 randomly selected manufacturers

1. Interpon Powder Coatings

Interpron Powder Coatings provides industrial and decorative powder coatings

Interpon Powder Coatings

686 Rosebank Rd, Avondale, Auckland 1746

2. PPG Industrial Coatings

5 Monahan Road, Mt Wellington , Auckland 1060

3. Dulux Powder & Industrial Coatings

31B Hillside Rd, Glenfield, Auckland 0627

4. Perfect Color

12b Porana Road, Auckland 0620

Additionally, you can find an indication of how much powder coating costs in our price list.


0 replies

Leave a Reply

Want to join the discussion?
Feel free to contribute!

Leave a Reply

Your email address will not be published.