ASTM A755 0.85mm Brick grain Pre-finished PPGL Prepainted Galvalume color-coated Steel HDP Beckers for cladding
PPGI & PPGL (pre-painted galvanised steel sheet & pre-painted galvalume steel sheet), also known as pre-coated steel sheet or colour-coated steel sheet, consists of hot-dip galvanised steel sheet, hot-dip galvanised galvalume steel sheet and electro galvanised steel sheet.
After pre-treatment of the surface, one or more layers of organic coating are applied and baked solidified. Colour-coated steel sheets are lightweight, good in appearance, corrosion resistant and can be directly processed.
Colours are generally divided into grey, sea blue, brick red, etc. They are mainly used in advertising, construction, decoration, household appliances, electronics, furniture industry and transport.
The coatings used for coloured coils depend on the environment in which the resin is selected, such as silicone-modified polyester, polyvinyl chloride plastisol or polyvinylidene chloride.
Types of Coatings for PPGI and PPGL
Polyester (PE): good adhesion, colourful, wide range of formability and outdoor durability, medium chemical resistance, low cost.
Silicone Modified Polyester (SMP): Good abrasion and heat resistance, as well as good exterior durability and resistance to chalking, gloss retention, general flexibility, medium cost.
Highly durable polyester (HDP): excellent colour retention and UV resistance, outstanding outdoor durability and anti-chalking properties, good film adhesion, colourful, cost-effective.
Polyvinylidene fluoride (PVDF): excellent colour retention and UV resistance, excellent outdoor durability and anti-chalking properties, excellent solvent resistance, good formability, stain resistance, limited colours, high cost.
Polyurethane (PU): Polyurethane coatings are characterised by high abrasion resistance, high corrosion resistance and high vandalism resistance. Under normal conditions, the shelf life can be more than 20 years. It is mainly used in buildings with severe environmental corrosion.
Main features
- Better durability and longer service life compared with galvanised steel.
- High heat resistance, less discolouration at high temperatures compared to galvanised steel.
- Highly heat-reflective
- Processability and painting properties similar to galvanised steel.
- excellent welding properties
- Cost-effective, long-lasting performance at a very competitive price.
Coating structure details:
