PPGI coil, the pre-painted galvanized steel coil, is widely used due to its multiple adaptability and pretty appearance. Its wide applications also make it a promising investment project. Before purchasing it, let’s learn more information about this kind of hot-selling coil.
How Is PPGI Coil Made?
Pre-painted galvanized steel coil is a kind of color coated coil. It uses galvanized steel as base metal and then is coated with organic coatings of various colours. After surface pretreatment, one or more layers of organic coatings are applied to the surface, and then the product is baked and cured. That’s why PPGI steel actually has different layers, including base metal, zinc coating layer, chemical conversion coating, primer coating, and top/back coating.
The popular colors are white, gray, sea blue and brick red, etc. PPGI coil has the advantages of both steel sheet and organic coating materials. It keeps the mechanical strength and easy forming function of steel. At the same time, organic coatings provide aesthetic appeal and better corrosion resistance.
What Are Coating Structures of PPGI Coil?
There are different painting methods used so that you can find the different structures of PPGI coil. Below let’s have a brief review.
2/1: It means painting the upper surface twice, but the back area once, and baking twice. By comparison, the resistance to corrosion and scratch of the backside is poorer, but it has better adhesion. It is mainly used in PPGI sandwich panels.
2/1M: It refers to painting the upper and lower surfaces twice and baking once. The backside has good corrosion resistance, scratch resistance and processing formability, and also good adhesion. It can be used individually and in sandwich panels.
2/2: It means painting and baking the top and back sides twice. The backside has excellent corrosion resistance, scratch resistance, processing and formability. It’s mostly used for single-layer panels, such as colour corrugated roofing sheets. But the adhesion is poor, so it’s not suitable for sandwich panels. This is the most commonly used method. But for special uses, for example, panels for home appliance will be painted and baked for three times. If you have special requirements, please inform us.
Where Can PPGI Coil Be Used?
PPGI coil has advantages like great anti-corrosion performance and beautiful appearance. Its superior longevity and good machinability make it popular in many applications, such as advertising, construction, home appliance, electrical appliance, furniture and transportation industries. To be specific, they are used in roofing panels, surface sheets of balconies, frame of window, household appliances, outdoor billboards, retaining walls, and so on. No matter whether in hot or cold areas, PPGI will be a great choice.
Contact Wanzhi Steel Today
In a word, PPGI coil is based on the galvanized coil and then be painted with different colors or patterns. This colorful and beautiful surface makes it more versatile. Before purchase, you need to choose a reputable supplier, like Wanzhi Steel. Wanzhi Steel has a PPGI factory with different color coating lines and galvanizing lines to provide you quality products with different colors and patterns. Also, they have roller machine to make different PPGI corrugated sheets to meet your needs.