Steel Fabrication & Industrial Facilities – Choosing the Correct Surface Preparation Before Painting

There are basically two possibilities for steel fabricators and industrial facilities, perform surface preparation before painting. These two most common methods are SP2/SP3 (hand & power tool clean) and SP6 (Commercial Blast or Sand Blast). I will go through each in terms of their relationship with the coating to be applied.

Hand & cleaning) with power tools (SP2/SP3 is usually good for individual component products. These products would also manufacture metal coatings, universal metal primers,Alkyd / oil top coats, acrylic varnish, and silicone-alkyd resins. However, the performance of these coatings in the course of time is always dependent on the amount of surface preparation. Although this type of surface preparation may be sufficient, the coatings applied are almost always better when a commercial / sandblast (SP6) was carried out to perform.

If for epoxies, urethanes, zincs or other multi-component products that are carried out a commercial / sandblast (SP6). Yes, I know what you aresaid. I say a lot of data sheets from different paint suppliers SP2/SP3 that the minimal preparation of the surface for many of these products. I can only tell you from my experience, I have seen disasters from this level of preparation of the surface, as a high-performance coatings have been applied. The specific problem that I have ever seen, literally, when an epoxy resin with good adhesion evaluation, the existing scale on the steel took millions as it was a magnet. The trick is that, althoughSome data sheets for high-performance coatings can you say a hand & power tool clean surface to carry out preparation, will also be the existing million must removes scale on the steel. The time it takes with one hand & power tool clean surface preparation (if at all possible, take) and your employees go to work that hard to get it done?

Another point to note is the level of the profile that gives it to your commercial / sandblast (SP6) is completed.Having a profile on the surface of the steel is important because it attack the coating on a tooth. However, it can be seen too much of a surface, a problem, depending on the coating system, because it might not be enough to cover up applied coating, the depth of the profile. For each project, be sure to paint your provider to find out exactly how much profile you need.