Pre galvanized pipe, with galvanized strip (that is, has been galvanized steel strip) production, the raw material is galvanized strip steel.
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Galvanized strip steel is the cold rolled or hot rolled, long and narrow strip steel plate on different degrees of a layer of raw materials called (zinc, aluminum). Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Complex physical and chemical reactions occur between hot dip galvanized strip steel matrix and molten plating solution to form a tightly structured zinc-ferroalloy layer with corrosion resistance. The alloy layer is integrated with pure zinc layer and strip steel matrix. So its corrosion resistance is strong.
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Galvanized sheet is a steel plate with a layer of zinc on its surface. Galvanizing is an economical and effective method of rust prevention that is often used.
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Black steel pipe is cold rolled steel heated to annealing temperature, surface color due to high temperature contact with air black. Its surface has not been polished so it is black. The physical properties become soft, convenient for further welding into steel pipe.
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PPGI is pre-painted galvanized steel coil.PPGI / PPGL is made by cold rolled steel sheet and galvanized steel sheets as baseplate, through the surface pretreatment (degreasing, cleaning, chemical conversion processing), coated by the method of continuous coatings (roller coating method), and after roasting and cooling.
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Galvanized strip steel is the cold rolled or hot rolled, long and narrow strip steel plate on different degrees of a layer of raw materials called (zinc, aluminum). Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Complex physical and chemical reactions occur between hot dip galvanized strip steel matrix and molten plating solution to form a tightly structured zinc-ferroalloy layer with corrosion resistance. The alloy layer is integrated with pure zinc layer and strip steel matrix. So its corrosion resistance is strong.
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