The surface of Hot-Rolled products is oxidized due to the High rolling temperature, therefore, there is some inhomogeneity in its Properties such as thickness, color and … . In Seven Diamonds Industries Company, these products are descaled by hydrochloric acid in pickling process to achieve the quality for subsequent uses.
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Galvanized steel is a type of steel that has been treated with an application of protective zinc coating to prevent it from corrosion. These products are widely used in various industries such as construction, automotive, electronics, and home appliances. Through its years of experience in the field of steel, and especially the galvanized steel production, the Seven Diamonds Industries Company has a special reputation in the domestic and international markets. The production of various products in accordance with international standards and, in some cases, the production of special coated sheets for specific uses, distinguishes this company from its competitors.
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Cold-Rolled steel is produced by rolling process of pickled Hot-Rolled steel to lower thicknesses at low temperature. The Cold-Rolled Steel produced by the Seven Diamonds Industries Company, is a Cold-Rolled low-carbon steel (Reverse mill), processed by batch annealing, skin pass rolling, tension leveling and applying protective oil in order to increase the life of the product. These products are manufactured according to the customer's request for various applications in accordance with the national and international standards.
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Color Coated Galvalume steel is produced in various types (width up to 1250 mm), (thickness 0.2 to 1.25 mm), (coating weight up to 200 gr/m2), and unlimited color variation. Several layers of paint are applied to the both sides of the sheet using special rolls, and are baked in the furnaces. These products have a uniform appearance and durability properties - consisting adhesion and resistance to corrosive environments - along the whole length of the coil, due to the controlled paint applying. Based on the special properties of the Galvalume coating and the type of paint used, the Color Coated Galvalume steel sheet has an appropriate flexibility, too.
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Seven Diamonds industries Galvalume Steel Sheet is carbon steel sheet coated with aluminum-zinc alloy (nominal composition of Al 55%-Zn 43.5%-Si 1.5%) by a continuous hot-dip process. Galvalume steel sheet combines the excellent barrier corrosion protection of aluminum with the galvanic protection of zinc. This product has been widely used in industries (even more than Galvanized products in some countries) due to its excellent corrosion resistance, scratch and abrasion resistance, good formability, and a distinctive appearance, with a smooth, fine spangle and silvery metallic appearance.
