PPGI Prepainted Galvanized Steel Coil in All RAL Colors with Factory Direct Price and 1220*2440mm Specification

Also known as color plate, PPGI is manufactured using cold rolled steel plate and galvanized steel plate as base materials. After surface pretreatment including degreasing, cleaning, and chemical conversion treatment, the coating is applied continuously using the roller coating method, followed by baking and cooling. These coated steel plates offer lightweight construction, attractive appearance, and excellent anti-corrosion performance, suitable for direct processing. They serve as innovative raw materials for construction, shipbuilding, vehicle manufacturing, home appliances, and electrical industries, effectively replacing wood while enabling efficient construction, energy conservation, and pollution prevention.

Galvanized sheet refers to zinc-coated steel plate surface. Galvanizing represents an economical and effective rust prevention method, utilizing approximately half of the world's zinc production. Surface requirements include various states such as regular spangle, small spangle, and big spangles, depending on coating process treatments. The material must exhibit good appearance without defects harmful to product use, including no plating, holes, cracks, scum, excessive thick plating, abrasion, chromic acid dirt, or white rust.

Galvalume steel sheet consists of an aluminum-zinc alloy structure comprising 55% aluminum, 43% zinc, and 2% silicon solidified at 600°C. The complete structure forms a dense tetrad junction crystal of aluminized iron, silicon, and zinc. This material offers superior corrosion resistance (three times that of pure galvanized sheet) with decorative zinc flower surfaces ideal for building exterior panels. The corrosion protection primarily derives from aluminum's protective function. Galvalume steel sheet demonstrates excellent heat resistance, withstanding temperatures exceeding 300°C, similar to aluminum-plated steel plate's high-temperature oxidation resistance, making it suitable for chimney tubes, ovens, illuminators, and solar lampshades.