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PPGI And GI Steel Coil Are Surface Resistant To Corrosion
- Nov 22, 2017 -


The hot-dip galvanized steel sheet is made of cold-rolled steel sheet with various strength and thickness specifications. The pre-coated steel sheet obtained by hot-plating an Al-Zn coating on both sides has a mass percentage of 55% Al, 43.5% Zn and 1.5% Si, the physical protection and high durability of Al and the electrochemical protection properties of Zn are fused. In addition, the surface was highly decorative bright silver gray and the rules of the pattern, and has a floating convex sense.

Aluminized zinc plate has been proven to have the following characteristics: extraordinary weather resistance and the use of more than 20 years without maintenance. Recent tests on the early products of the roof / wall system show that the galvanized sheet has no need for any maintenance of the main body under the influence of strong solar radiation, exposure, erosion and temperature stress for decades.

In the galvanized steel coated with a layer of chemical coating, in the chemical coating and then coated with very corrosion-resistant epoxy resin primer, increase the anti-corrosion function. Coated with excellent weathering excellent special strong chemical polyester, to ensure that the galvanized steel plate can be used after many years to maintain their original color and luster, the bottom is coated with a layer of light gray paint Steel plate more beautiful.

More than 500 million square meters of engineering examples around the world make the galvanized sheet is getting more favored by architects and owners. Excellent anti-erosion performance, innovative design style is the roof / wall system is widely used reasons. The study shows that the present roof system is expected to achieve a service life of more than 30 years or more in most cases and is not subject to maintenance.

The steel into the steelmaking furnace into a certain proportion of smelting, the resulting molten steel casting molding, after cooling to get steel ingots or slab, for rolling into a variety of profiles, in order to obtain different performance of steel, but also In the smelting process by adding chromium, nickel, molybdenum, tungsten, vanadium and other trace elements, and these chemical composition determines the different properties of steel.

Among them, "chromium" can increase the corrosion resistance of steel, usually the international chromium content of more than 13% of the steel known as stainless steel. Nickel can increase the strength and toughness of steel, molybdenum can prevent steel brittle, tungsten can increase the wear resistance of steel, do not look tungsten hardness is low, only about 40s, but their anti-wear ability is very high, vanadium can increase Resistance to steel and ductility.