Z-section steel is a common cold-formed thin-wall steel with a thickness of 1.6-3.0mm and a section height of 120-350mm.
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Color coated coil is hot galvanized sheet, hot aluminum plating zinc plate as the substrate, after surface pretreatment (chemical degreasing and chemical conversion treatment), coated on the surface of a layer or several layers of organic coating, then after baking and curing products
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The drainage pipe is made of special shaped steel and plastic composite strip by spiral winding welding (extrusion welding on the lap surface), and its inner wall is smooth and flat.
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Cold rolled steel is steel produced by cold rolling. Cold rolling is the further rolling of No.1 steel plate to the desired thickness at room temperature
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Annealing is a metal heat treatment process in which the metal is slowly heated to a certain temperature, maintained for a sufficient time, and then cooled at a suitable rate.
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Galvanized steel plate is to prevent corrosion on the surface of the steel plate to prolong its service life, coated with a layer of metal zinc on the surface of the steel plate, the zinc coated steel plate is called galvanized plate.
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