Hot Dipped Prepainted PPGL Steel Coil PPGI Galvanized Steel Sheet In Coil

PPGI is pre-painted galvanised iron also known as pre-coated steel, coil coated steel, color coated steel etc., typically with a hot dip zinc coated steel substrate.

The term is an extension of GI which is a traditional abbreviation for Galvanized Iron. Today the term GI typically refers to essentially pure zinc (>99%) continuously hot dip coated steel, as opposed to batch dip processes. PPGI refers to factory pre-painted zinc coated steel, where the steel is painted before forming, as opposed to post painting which occurs after forming.

The hot dip metallic coating process is also used to manufacture steel sheet and coil with coatings of aluminium, or alloy coatings of zinc/aluminium, zinc/iron and zinc/aluminium/magnesium which may also be factory pre-painted. While GI may sometimes be used as a collective term for various hot dip metallic coated steels, it more precisely refers only to zinc coated steel. Similarly, PPGI may sometimes be used as a general term for a range of metallic coated steels that have been pre-painted, but more often refers more precisely to pre-painted zinc coated steel.

When hot-dip galvanized steel is painted, the duplex system provides a more sophisticated manner of corrosion protection. The galvanized coating protects the base steel by providing both cathodic and barrier protection. The paint coating acts as a barrier protection for the hot-dip galvanized coating and significantly reduces the corrosion rate of the zinc.

The increased lifetime that can be provided with a combination of paint over galvanized steel makes this type of corrosion protection system very attractive for structures designed to last a long time in aggressive atmospheres.

Aluminium corrosion resistance is very good in untreated aluminium. Untreated aluminium has very good corrosion resistance in most environments. This is primarily because aluminium spontaneously forms a thin but effective oxide layer that prevents further oxidation.

Pre painted Aluminium combine the metal’s anti corrosive properties along with a layer of further paint protection giving the lightweight metal a longer lifespan and a vibrant look.

Product Details

Material	EN 10346	DX51D,                                         S220GD,                                         S250GD,                                         S280GD,                                         S320GD,                                         S350GD,                                         S550GD
	ASTM A653M	CS(TYPE A, B, C)                                         SS GRADE                                         33(230)                                         37(255)                                         40(275)                                         50(340) CLASS 1~3                                         80(550) CLASS 1~3
	JIS G3302	SGCC                                          SGCH                                          SGCD1~4                                          SGC340                                          SGC400                                          SGC440                                          SGC490                                          SGC570
	AS1397	G1~G3                                          G250                                          G300                                          G350                                          G450                                          G500                                          G550
Thickness	0.13-0.8 mm
Width	600-1250 mm
Paint Thickness	top paint:10-30mic, back paint: 5-25 mic
Types of Paint Available	PE, SMP, HDP, PVDF
Coil ID	508/610mm
Coil weight	3-8tons