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All United Metal have modern workshop and a lot of inventory about cold rolled galvanized steel sheet and hot dipped galvanized steel coil.Our company are orderly delivery of galvanized steel sheet and galvanized steel coil everyday. In addition,the modern logistics system can improve the quality of work efficiently . On the galvanized steel sheet processing，we have many processing lines can provide galvanized steel sheet slitting ,cutting and processing. Our good quality products and delicate export packaging may be a good choice for your purchase.
About the surface of galvanized steel sheet
A chemical treatment method used in the galvanizing layer. It an reduce the corrosion of steel plate during storage due to the wet (white-rust). It is the most common surface treatment of galvanized layer except finishing surface,.
Surface treatment method for reducing steel rust in wet storage conditions. The passivation of steel usually after oiling.
Regular spangle:Our naked eye can recognize spangle obviously which zinc crystals are free growth and formed during zinc was normal solidification.
Cold rolled galvanized steel sheet/coil mini spangle:Zinc crystals are restricted to form a smaller zinc sangle than the normal zinc spangle during the zinc was solidification .
Zero spangle:The surface of zinc coatings was no visible on the surface of the zinc coatings by using the specific production process and the surface is not uniform
skin pass spangle:We obtained uniform surface coating by cold rolling of steel plate with small deformation.
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