The characteristics of Ppgl steel coil AZ70 mainly include strong corrosion resistance, good process performance, environmental protection and energy saving.
Galvalume steel coil PPGL AZ70
Galvalume Steel Coil
The surface of the galvalume steel coil has a unique smooth, flat and gor-geous star flower, and the base color is silver white. The special coating structure makes it have excellent corrosion resistance.
AZ stands for Aluminium, Zinc, an elemental abbreviation, 70 for Aluminium Zinc Layer, 70g/m² PPGL.
Pre-Painted Galvalume steel is an aluminium-zinc plated steel sheet as a substrate which is also covered with coloured paint by means of the pre-painting technique.
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Corrosion ResistanceThe corrosion resistance of galvalume sheet AZ70 is due to its aluminium-zinc alloy overlay treatment, which forms a dense layer of quaternary crystalline alloy plating on the surface of the steel sheet, consisting of 55% aluminium, 43.4% zinc and 1.6% silicon solidified at a high temperature of 600 degrees Celsius. -
Oxide ProtectiveThis layer can form a dense oxide protective film, the steel plate to play a protective role, greatly extending the service life of the products. Compared with ordinary galvanised sheets, colour coated galvalume sheets have a stronger adhesion and a denser structure. -
Process PerformanceThe production process of galvalume sheets have been improved in recent decades and has become very mature. Due to a layer of aluminium with high purity on its surface, it has good fingerprint and graffiti resistance and will not change colour easily. -
EnvironmentallyAs an alloy, zinc aluminide does not produce harmful substances during the hot-dip plating process. It has a high purity aluminium layer on the surface, which has a high self-repairing ability and is corrosion-resistant for a long period of time in most environments, resulting in a longer lifespan.
Production processWhat do ?
Pre-treatment stage: firstly, the cold rolled coil passes through the uncoiler and then enters the degreasing section and the reduction furnace to a level where it can be galvanised.
Central section: after passing through the zinc pot, a zinc layer is applied to the surface of the steel sheet.
Post-treatment stages: finishing, drawing, passivation and finally winding on the winder.
Prepainted galvalume steel coil AZ70 has a wide range of uses, including but not limited to automotive use, solar energy, metal products, household appliances, precision electronics, containers, machinery manufacturing, lifts, sanitary ware, rail transportation, pressure vessels, building decoration, nuclear power, catering and kitchen utensils, chemical equipment, daily electric appliances, edible machinery, structural tubing machining services for customised samples, and so on.
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