dx51d z100 cold rolled steel coil galvanized steel coil for roofing sheet

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Brief introduction

Hot-dip galvanized steel coil is to prevent the surface of the steel plate from corrosion, with various strength and thickness specifications of cold-rolled substrate as the base material, hot plating a layer of metal zinc on both sides, has the chemical protection characteristics of zinc plating refers to the metal, the surface of a layer of zinc plating to play a beautiful, rust prevention and other roles of the surface treatment technology. The main method is hot dip galvanizing, which is mainly used to prevent the corrosion of steel, its protective performance and the thickness of the coating is very important. The protective and decorative properties of zinc coating can be improved significantly after passivation treatment, dyeing or coating with light protection agent.

Cold rolling: with hot rolled steel coil as raw material, after pickling to remove the oxide skin for cold continuous rolling, the finished product is rolled hard roll, due to the cold hardening caused by continuous cold deformation, the strength of the hard roll, the hardness rises, the toughness and plastic index decreases, so the stamping performance will deteriorate, can only be used for simple deformation parts.

Hot rolling: is relative to cold rolling, cold rolling is rolling below the crystallization temperature, and hot rolling is rolling at the crystallization temperature.

Pickling: The use of acid solution to remove the surface of iron and steel oxide and rust is called pickling. It's a way of cleaning metal surfaces. This is usually done with a prefilm. The parts are generally immersed in an aqueous solution such as sulfuric acid to remove the oxide film on the metal surface. Is electroplating, enamel, rolling and other processes of pre-treatment or intermediate treatment.

ickling: The use of acid solution to remove the surface of iron and steel oxide and rust is called pickling. It's a way of cleaning metal surfaces. This is usually done with a prefilm. The parts are generally immersed in an aqueous solution such as sulfuric acid to remove the oxide film on the metal surface. Is electroplating, enamel, rolling and other processes of pre-treatment or intermediate treatment.Pickling: The use of acid solution to remove the surface of iron and steel oxide and rust is called pickling.

It's a way of cleaning metal surfaces. This is usually done with a prefilm. The parts are generally immersed in an aqueous solution such as sulfuric acid to remove the oxide film on the metal surface. Is electroplating, enamel, rolling and other processes of pre-treatment or intermediate treatment.

FAQ

Q1: How about the delivery time if we order from you? 

 A: Generally, it will take about 25 days after receiving your advance payment. It also decided by your total quantity. 

 Q2: Do you provide free sample for test? 

 A: Yes, we can provide small size sample if we have. 

 Q3: Could you produce according to our special demision? 

 A:Yes,customized size is available in our factory.We can produce according to your sample or designs.