There are many types of steel sheet metal available in the market and greater efficiency of oiled sheets than a completely hard sheet. Various steel plates on the market Depending on their application, steel mills around the world produce different types of steel plates. The production method is the main difference between these sheets, and some are used as raw materials for other sheets. Steel plates include the following: Tin plate or tin plate Acid wash sheets cold plate or oiled plate Warm or black sheets coloring page Galvanized sheet or white sheet Tinplate is resistant to humidity Tinplate or coated tinplate is very similar to galvanized sheet in that the raw material for both is steel, the difference is that galvanized sheet has a zinc coating, but tinplate is covered with tin metal. The presence of a tin coating on the steel plate changes the wear time of the product and makes it resistant to oxidation, which makes coated tin plates a suitable product for wet environments exposed to water and rain. 
Tinplate is used in industries such as the canning industry, automobile manufacturing, the manufacture of household and kitchen appliances, and electrical equipment, and in the construction industry for fencing, roofing, and covering certain places. Clear and polished pickled paper like oiled paper Pickling board is one of the boards widely used in all walks of life and is made of the blackboard. It can be said that the production process of the pickled board is very similar to cold board in some stages. Pickled boards have popular applications in industries where job appearance is very important. Automobile manufacturing, construction, and other industries. Blackboard is the raw material to produce pickling boards. In the production process, the surface of the blackboard is first washed with acid to remove part of the fat and impurities. This makes the sheet more transparent, and the final product is very similar to the cold sheet. Pickled sheets are typically 1.5 to 6 mm thick. dark and cloudy sheets Blackboards are produced in a hot rolling process. The reason why this product is called a blackboard is that it becomes cloudy due to the melting of the steel plate during the production process, so it is called a blackboard. The manufacturing method is to subject the manufactured metal sheet to very high temperatures, and after this work, an oxide layer is formed on the metal sheet. This layer is then washed, which reduces the temperature of the bed surface. After this stage, the sheet goes to the roughing stage and completes the process of passing through the rolls until it finally reaches the desired size. This process reduces the thickness of the sheet from 15% to 30%. There are 2 to 3 stands for rough rolling, after which the product enters the final rolling stage and finally becomes a blackboard. The standard type of oiled board Oil sheets on the Iranian market are usually produced under the ST14, ST12, and ST13 standard designations, with different elongation or tensile strengths. These sheets are usually between 12 and 28 in length. 
Cold-rolled steel sheets or ST14, ST12, and ST13 steel sheets are used for drawing, and the types of cold-rolled steel sheets are included, and the price of oil-coated steel sheets varies depending on the type. ST12 paper is a more normal quality paper. Their surfaces are completely smooth, free of cracks and corrosion, and are used in applications such as coating and forming. The fact that both sides of this sheet are identical and have the same properties is another feature of the ST12 standard sheet. This sheet is known as an ordinary oil sheet in the market and in various industries and has welding capability. ST14 sheet is another standard oil sheet with high elasticity. The production process of this type of sheet is that the aluminum metal is deoxidized during the production process, and the surface is smoother and more polished than the ST12 sheet. The smoothness of the surface of this set of oil flakes depends on the customer's order. ST13 sheet is another standard oil sheet on the market with properties between ST12 and ST14. It has medium elasticity and is mainly used when more shaping is required. In addition to the three sheets mentioned above, there is also an oily sheet on the market called the EK2 sheet. This board has the characteristics of glazing, so it can have a variety of colors, and it is mostly used in the production of kitchen appliances such as gas stoves. After cold rolling, the steel plate is coated with oil to become an oiled plate, but the oil is easily washed off with an alkaline solution during use. ST stands for the German word The standard for oiled boards is part of the German DIN. Standard names are generally composed of symbols and numbers, such as the ST14 table and the ST12 table. ST is derived from the German word Stahl, which means steel. The numbers used in oil paper standards also indicate the minimum tensile strength of the sheet. 
Greater Efficiency of Oiled Sheet
After hot rolling, there are oxides and impurities on the surface of the sheet, and the size is not accurate enough. By rolling the surface at ambient temperature, the sheet has a high surface, higher dimensional tolerances, and higher strength. The product of this process is called cold rolled, and there are two versions on the market: annealed and fully hardened. At the end of the manufacturing process, the annealed sheet is used to protect the sheet surface from rusting again, and to facilitate subsequent production processes, some oil is sprayed on the sheet surface. That's why this type of sheet is also common in the Iranian market, like petroleum sheet, which is generally more durable and efficient than a full hard sheet. In some cases, full cardboard is used. Its properties are more effective as input material for galvanizing lines. Oil foils are available for coils and sheets on the market and determine the strength and tension of the coils depending on the end application. It is important to note that the price of a product depends entirely on its characteristics. Size, size, thickness, quality, etc. have a direct impact on the price of steel plates and the price of oil plates, so you must pay attention to the characteristics you need before purchasing, to buy products with the suitable performance you need. The oily sheet is the basis to produce galvanized white sheets One of the reasons for naming these tables is their appearance. This sheet is made by cold rolling technology and is considered a type of cold plate. This process allows the sheet to be rolled from a high thickness to a low thickness. Iron or steel surfaces must be thoroughly cleaned before galvanizing. The cleanliness of the surface enables the chemical reaction process of the steel or iron bars to do well. Often, during the electroplating process and other steps in the production process, some oils and greases stick to metal surfaces. 
Afterward, the fat should be cleaned by degreasing it with steam, emulsion, or solvent. After cleaning with one of the above methods, the corresponding parts are washed with acid to remove other impurities on the surface. For this, hydrochloric acid or sulfuric acid solutions are used. If the sheet is not properly prepared before galvanizing so that the iron reacts easily with the molten zinc, a quality product will not be produced. Improper surface preparation is often the most important cause of defects in some galvanized parts. Cold rolled or oiled sheet is the basis to produce white galvanized sheet. In addition, coated galvanized sheet (colored sheet) is produced from galvanized sheet. High-quality oiled paper is much higher than black paper Many consumers do not know which blackboard and oil board to choose before purchasing. You might think that the two products are just produced differently, but the problem is that the product produced by hot rolling will never be comparable in quality to cold rolled sheet, which is much higher quality. Sheets made with hot rolling do not need to be reheated and are ready for production very quickly, and after production, their volume decreases once the temperature drops. By studying this problem, we can conclude that oil paper has a better size and shape than black paper. The hot rolling process is to pass raw materials such as steel ingots through several stands, turning them into steel bars, wires, plates, etc. in a specific process, depending on the product they are to become. In cold rolling, the products produced by hot rolling are used as raw materials, and after production and processing, they become foils, sheets, strips, etc. 
The difference between these products is the quality level, the cold rolling process produces products with higher strength and precision. These products have specific, controllable dimensions and smoother and polished surfaces. Much more precision has been done in controlling dimensions and dimensions in the cold rolling process than in hot rolling. Black paper or oil paper?! The sheet obtained by hot rolling, or the same black sheet has no specific dimensions, that is, its size and dimensional accuracy can be said to be not very high, and the surface is also almost rough and unpolished. The thickness of the blackboard is usually reduced from 25mm to around 6mm. If the product produced is of low thickness, i.e., 6mm, it will be rotated around an axis to form a sheet, these are the same raw materials in cold rolling. During cold rolling, the production of an oiled sheet, the sheet is more polished, has fewer dimensional changes, and is thinner. For example, the aluminum foil produced in this process has a thickness of about 8 microns and the steel sheet produced is about 200 microns. To reduce the thickness of aluminum, one rack is usually used, and for steel, several racks are used. Oiled sheet or galvanized sheet? Oil and galvanized sheets have interesting similarities. For example, they both have smooth uniform, and almost polished surfaces, but that doesn't mean the two products are indistinguishable from each other. The most important difference between the two products is the production method. In the production process, the oiled sheet is made from black sheets in a cold rolling process, while the galvanized sheet is produced by electroplating of molten zinc metal. Using Blackboards in Large Products Blackboards produced using the hot rolling process are used for larger-size products. Large-sized products usually have different shapes, and hot-rolled raw materials are more suitable for these products. 
In addition, hot rolled production sheet, one of the raw materials for sheet production, is also considered cold. Use oiled paper for smaller products Oil sheets and general sheets produced in the cold rolling process are mainly used to manufacture and supply smaller products. There is also a need for smaller products that are more durable and flexible. Construction, household appliances, furniture and table, and chair production, automobile manufacturing, etc. are industries that use more galvanized and oiled sheets in the production process. Steel sheets are produced in different types according to their use and efficiency in industry, with different applications in different industries and buildings, and they differ by their appearance and the type and structure of production. The ever-changing currency prices directly affect the price of oil sheets and other steel sheets. That's why you should know their current price before making a purchase. The price of the product is determined according to the type of structure and inherent characteristics of the product, and the size, size, thickness, manufacturer brand, and other characteristics of the sheet can directly affect the pricing. Conclusion All information mentioned above providing to the buyers who want to know and buy metal steel products with professional and innovative thoughts, and passionate and enthusiastic attitudes. We are eager to do what we do and strive to further the needs of our customers by providing quality products and services. And do not hesitate to any questions our support teams are available. For more information kindly visit our site.