Cold plate is made of ordinary carbon structural steel hot rolled steel strip, after further cold rolling into a thickness of less than 4mm steel plate. Due to rolling at room temperature, no oxide sheet is produced
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Hot dip galvanized steel pipe is first pickling, in order to remove iron oxide on the surface of the steel pipe, after pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank for cleaning, and then into the hot dip plating tank.
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Seamless pipe is a kind of hollow section, no joint around the strip of steel
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Hot dip galvanized steel pipe is first pickling, in order to remove iron oxide on the surface of the steel pipe, after pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank for cleaning, and then into the hot dip plating tank.
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Annealing is a metal heat treatment process in which the metal is heated to a certain temperature, kept for a sufficient time, and then cooled at a suitable rate (usually slowly or sometimes controlled).
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Galvanized C steel size adjustable, high compressive strength and other advantages. The section size of the steel formed by cold bending is light and light, and can be connected into different combinations, which is very consistent with the stress characteristics of roof purlin, so that the mechanical efficiency of the steel can be used. At the same time, it can reduce the weight of building roof and reduce the amount of steel used in engineering, so it is called economical and efficient steel.
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