Boxing Trust Metal Materials
Supplier of steel coils,
10+ years export experience,
OEM/ODM accepted.
ABOUT US
Boxing Trust Metal Materials Co., Ltd is a professional supplier of steel coils from China, with more that 10 years’ export experience. Our factory is located in Boxing of Shandong province, the country's largest aluminum products production base.
Our main products:
-PREPAINTED GALVANIZED / GALVALUME STEEL COIL
-HOT DIPPED GALVANIZED STEEL COIL
-ALUZINC / GALVALUME STEEL COIL
-COLOR STEEL ROOFING SHEET
-COLOR ALUMINIUM COIL
-FIBER GLASS SHEET / DAYLIGHT PANEL
What is the Structure of PPGI / PPGL?
Normally, the PPGI / PPGL is made up of base steel, zinc coating, pre-treatment layer(chemical conversion coating), primer coating, and top/back coating.
KNOWLEDGE BASE
Function of Each PPGI Color coated galvanized steel coil layers:
1.Top/back coating Provides color, beautiful appearance and a barrier film to enhance long-term durability for Color Coated Galvanized Steel Coil.
2.Primer coating prevent undercutting of paint and enhance corrosion resistance for Color Coated Galvanized Steel Coil.
3.Pretreatment layer is applied for good adhesion and enhance corrosion resistance for Color Coated Galvanized Steel Coil.
4.Zinc coating add corrosion resistance for Color Coated Galvanized Steel Coil.