GLMAG Coating Technology
GLMag - a triple-alloy coating technology combining aluminum, zinc, and magnesium exclusively applied by Poshaco Group in the production of pre-painted alloy-coated steel. This innovation delivers superior corrosion resistance compared to conventional alloy-coated steel products.
With the unique synergy of magnesium, aluminum, and zinc, GLMag offers an ideal solution for applications requiring exceptional durability and extended lifespan, especially in harsh or corrosive environments.
The Painting Systems for GLMag Coated Steel At Poshaco
In the color coated steel production, the painting layer plays a crucial role in protecting the steel surface from environmental factors while enhancing aesthetics and product longevity. Poshaco Steel Group offers 3 main painting systems for GLMag coated steel: Polyester (PE), Super Polyester (SP), and PVDF, each suited for different applications.
PE Paint
Polyester (PE) paint is widely used in the production of Pre-Painted Galvanized Iron (PPGI) anh Pre-Painted Galvalume (PPGL) due to its excellent durability and cost-effectiveness. PE paint features a painting thickness of a minimum 5 µm primer and 12 µm finish layer, offering good bending resistance at 5T and a pencil hardness of 2H. It provides strong adhesion at 100%/6mm and a gloss level ranging from 20% to 80%. Additionally, it exhibits solvent resistance exceeding 100DR and comes with a 6-year warranty, making it a reliable choice for PPGI applications requiring moderate weather resistance and aesthetic appeal.
SP Paint

Super Polyester (SP) paint is a highly effective coating for color coated steel production industry, known for its durability and reliability. With a painting thickness of a minimum 5 µm primer and 20 µm finish layer, it offers excellent bending resistance at 5T and a pencil hardness of 2H. It ensures strong adhesion at 100%/6mm and maintains a gloss level between 20% and 80%. Additionally, SP paint provides superior solvent resistance exceeding 100DR and comes with a 10-year warranty, making it an excellent choice for PPGI applications requiring enhanced weather resistance and long-term performance.
PVDF Paint

PVDF paint stands out as a premium coating option for the PPGI, PPGL, and PPGLMAg, delivering unmatched longevity and performance. Featuring a painting thickness with a minimum 5 µm primer and 20 µm finish layer, it excels with impressive bending resistance rated at 1T and a minimum pencil hardness of HB. Its adhesion strength reaches 100%/6mm, while offering a subtle gloss level of 20% to 35%. With solvent resistance surpassing 1000DR and an extensive 20-year warranty, PVDF paint is the ultimate solution for steel sheet projects demanding exceptional weather resistance and enduring quality.
Comparison of Painting Systems for GLMag Coated Steel
🔹 PE Painting – A standard, cost-effective solution with stable gloss and good color retention, ideal for residential projects. (6-year warranty)
🔹 SP Painting – An upgraded option with improved moisture resistance, reduced dust adhesion, and better color durability, suitable for industrial projects and harsher climates with higher corrosion levels. (10-year warranty)
🔹 PVDF Painting – The most premium system, offering excellent UV and chemical resistance, ensuring long-lasting color retention for heavy industrial projects, coastal areas, and environments with high chemical corrosion. (20-year warranty)
Choosing the right painting not only protects the steel but also extends the lifespan of structures and minimizes long-term maintenance costs. Unlock the secret to top-tier pre-painted steel products with Poshaco, where cutting-edge manufacturing meets global quality standards!
