A surface coating that provides optimal corrosion protection for steel!
Pretec’s Guide to PC-Coat
The three different processes take place in the following order:
- Hot-dip galvanizing – fuses with the steel surface. Ref. EN ISO 1461.
- Zinc–manganese phosphating – bonds very strongly with the hot-dip galvanizing, creating an excellent surface for the powder coating (heat-cured) to adhere to. Ref. powder coating EN 13438. This step is also a crucial part of meeting the adhesion requirements in today’s infrastructure projects.
- Powder coating applied in one or two layers; the powder coating bonds extremely well to the phosphate layer.
From untreated to finished bolt – the image below shows the four stages of the treatment process.
The combination of hot-dip galvanizing and powder coating creates a synergistic effect, giving the system a significantly longer lifespan than either process alone.
The color coating in PC-Coat has been third-party tested according to EN ISO 1519 (elasticity), ISO 2409 (adhesion), and ASTM D2794-93 (impact resistance), all with excellent results. PC-Coat has also been tested according to ISO 12944-9. Please contact us if you would like to see the test reports.
For product datasheets with technical specifications, as well as operation and maintenance documentation, feel free to contact us.
You can also take a look at our PC-Coat brochure for more information.
Why Choose PC-Coat Corrosion Protection?
- Experience with hot-dip galvanized and powder-coated products has shown the potential for an extremely long service life—something also confirmed by research projects at SINTEF¹.
- In addition to providing excellent corrosion protection, the coating also gives the product a decorative appearance and is available in an almost unlimited range of colors.
- This type of corrosion protection is often used when high quality is required, combined with the desire for long service life and low maintenance costs. We’re talking about lifespans of over 100 years, depending on climate and environmental conditions, as well as material quality and workmanship. Examples include coastal installations, underground structures, infrastructure, and environments with high humidity combined with elevated temperatures.
- Powder coating is an environmentally friendly and cost-effective process that produces minimal waste and contains no volatile solvents. It provides a safe working environment and significant cost savings.
- We’re committed to quality at every level. The processes are automatically controlled in facilities with repetitive operations, and together with strong quality assurance routines and skilled employees, this ensures consistently high quality.
¹ M. Bjordal, S.B. Axelsen, O.Ø. Knudsen, “Kvalitetskriterier för pulverlackerat HDG-stål i frätande miljö”, Framsteg i organiska beläggningar 56, 1 (2006): s. 68–75.
Cut or Damaged PC-Coat?
Read how to repair PC-Coat after cutting or damaging the coating here.
Projects
For the vast majority of tunnel projects where we supply bolts, we use our PC-Coat surface coating, allowing us to maintain exceptionally high quality.
We want everyone to have the opportunity to make conscious material choices, which is why our main products within rock reinforcement featuring our unique PCC-Coating are registered in BASTA*. Of course, our goal is to have all our products registered, and this work is continuously ongoing.
At Pretec, we’re taking further steps toward sustainable rock reinforcement — today, we have EPDs på vår NC-Bolt and PC-Bolt and we are continuously working to advance in this area.
Are you currently involved in a project and want to know more in detail? Feel free to contact our Tunnel and Rock Specialists, or learn more in our brochure Pretec – PC-Coat.
To explore more of our products in tunnel and rock reinforcement, you’re welcome to visit our Tunnel and Rock segment.
*“BASTA is supported by major actors in the construction and civil engineering sector, as well as by authorities such as the Swedish Chemicals Agency and the Swedish Transport Administration. BASTA is a non-profit organization owned by IVL Swedish Environmental Research Institute and the Swedish Construction Federation.” – www.bastaonline.se