Construction and industrial enterprises in their work often use metal in various forms. In the list of the most popular products, coil steel is not the last. Manufacturers offer a wide range of this type of metal.
How do they differ, and how to choose the right steel for a certain type of work?
What it is
First of all, you should define the term and only then go on to consider the main characteristics and advantages of the product.
Steel coils are thin metal sheets that are supplied in the form of coils. The width of the sheet varies from 200 to 6,000 mm. There are certain requirements for the maximum weight of one roll. The mass of a coil of cold rolled steel can reach 15 tons, for hot rolled steel this figure is much less - only 10 tons.
Rolled metal products are available in a wide range, however, it is customary to classify all the items on the market of goods for convenience according to 3 main characteristics.
- The surface condition divides the entire product range into black (non-pickled) rolled steel and pickled.
- Rolling accuracy can be normal and high accuracy.
- An edge type characterizes steel as uncut and trimmed.
Hot rolled and cold rolled
These two types of steel differ in the type of production.
Hot rolled still hot. Its distinctive features are a sheet thickness of 10-15 mm, an average indicator of surface smoothness and a relatively low threshold for wear resistance. However, this does not mean that such material will not find application. It is widely used in the manufacture of profile pipes of various types.
Cold rolled steel in coils has some differences from the previous version. It is the same hot-rolled metal, but with additional processing. This is what allows it to contain a reduced amount of carbon. Features in the manufacturing technology give cold rolled steel and some operational features:
- minimum thickness reaches 0.45 mm;
- the surface of the sheet becomes perfectly smooth;
- excellent for welding.
Steel Coil Benefits
In addition to rolled metal, manufacturers offer sheet metal. Considering the similarities and differences of these positions, one can notice the undeniable advantages of the material in the roll.
- Convenience of storage. Roll materials are compactly packed and require a minimum of storage space.
- Easy loading, unloading and transportation.
- Seamless execution of parts of different widths.
Cink Steel
Galvanized coiled steel is the type of metal that is coated with a layer of zinc on both sides during production. This feature reduces the risk of corrosion and makes the service life of steel high.
Zinc coating is carried out according to 2 different technologies:
- galvanic method;
- hot method - this option is more economical, so the finished product will also be more attractive at a price.
The quality of the finished galvanized metal products must fully comply with the norms and standards. They are prescribed in GOST 14918-80.
Polymer coating
An alternative to galvanized products was steel coil with a polymer coating. The basis of this type of metal rolling is galvanized steel in a roll, however, this option is considered to be improved due to an additional layer of polymer.
The coating varies significantly in composition, so you need to choose it taking into account the requirements for the finished product.
Polyester. This option guarantees resistance to rust and sudden changes in temperature, however, it is powerless under mechanical stress and is destroyed.
Polyvinyl Chloride (PVC). Products made of such steel are characterized by anticorrosion properties, resistance to mechanical stress, but UV rays and temperature changes are harmful to them.
Paint and epoxy. Depending on the type of galvanization in rolls, such a coating can be applied on one side or both at once. The main advantage of a paint or epoxy coating is its high resistance to corrosion and a rather low price.
Polyurethane By purchasing metal with such a coating, you can achieve a long service life and reliability, because the polyurethane layer protects the steel from corrosion, ultraviolet radiation, high and low temperatures and mechanical stress. The cost of such a purchase will be an order of magnitude higher than the price of coiled steel with other types of protective layer.
Fields of application
Galvanized steel coils are widely used in industries. This was made possible thanks to high wear resistance, aesthetic appearance (especially for polymer coated steel), ease of installation and affordable prices.
- Roofing material. To cover the roof, rolled steel is considered one of the best materials. She is not afraid of contact with moisture, can serve for decades and is relatively inexpensive. In addition, a smooth surface does not allow snow to accumulate on the roof surface. It is from this type of metal that metal tiles are produced.
- Facing. Strength, ease of processing and installation, affordability, attractive appearance - these are just a few of the advantages of steel coils for cladding buildings. It is present in the production of sandwich panels, metal siding.
- Manufacture of finished metal products. Galvanization in rolls is considered a suitable raw material for the production of many other products, including household and industrial equipment.
- The device of engineering networks. Of thin metal sheets , air ducts, ventilation and drainage systems are often prepared.
- In other words, many industrial enterprises use rolled steel, choosing a product with suitable characteristics.
In other words, rolled steel is a type of metal rolling, which is distinguished by many outstanding characteristics. Thanks to this, he found application in the construction, industrial and many other fields.