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Excellent Heat Resistance Galvalume Aluzinc Steel Coil Sheet. The galvalume steel coil, also called aluzinc steel coil, is made by cold-rolled steel sheet as a substrate and solidified by 55% aluminum, 43.5% zinc and 1.5% silicon at 600 °C. Similar to galvanized steel, galvalume steel Hot Rolled Steel Coil Price Supplier & Manufacturer Shanghai Metal Corporation is experienced manufacturer of hot rolled steel coil, plate and strip from general grade to high strength grade, if you want to know more about the products, please feel free to contact us, we will reply you within 24 hours. 1.Standard: Hot-dip galvanized steel plate welding problem Shandong May 06, 2020 · The existence of the zinc layer brings some difficulties to the welding of hot-dip galvanized steel sheets. The main problems are:weld cracks and increased porosity, zinc evaporation and soot, oxide inclusions, and galvanized layer melting and destruction . Among them, welding cracks, porosity and slag inclusion are the main problems. Welding crack
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