Angle Iron or L-Profile is one of the most important usable sections in building construction and industry. This section is used for connecting bridges to columns, large iron door frames construction and metal forms, connecting beams to load-bearing beams, connecting columns to plates in the foundation of steel structures, metal structures construction, columns and trusses and etc.
What is Equal Angle?
Equal Angle is one of the most widely used steel products in building construction and industrial applications such as power transmission towers, industrial machinery, automobiles, etc. This product is manufactured in the shape of the English letter “L” by hot-rolled or cold-rolled method. This product consists of two wings that are placed 90 degrees on top of each other.
Different Type of Steel Equal Angle
Common produced Equal Angle in Iran are divided into two categories: fabric and press, which this division is based on its production method. There is another category that is based on the shape of the flange. The Equal Angle that fall into this category are divided into two equal and unequal flange categories.
Fabric Equal Angle
Fabric corner is one of the hot-rolled product that is obtained from iron billet in the form of fabric. Billet is the raw material of this product, which is produced in the form of rectangular molten steel. Due to its molten shape, this material easily forms to an L-shape and is cut to the desired size and taken directly out of the production line.
Pressing Equal Angle
This product is produced by cold-rolled method and obtained from black coil. In this case, the steel coil with different thicknesses and lengths is cut and shaped by a roll forming machine. The maximum length of this product is 6 m. and it is produced according to BS EN 10056 standard.
Which one is better? Fabric or Pressing Equal Angle?
Each of the press and fabric methods has its own advantages and disadvantages that make their application different; therefore, it cannot be said exactly which production method has a better equal angle. Familiarity with different types of equal angle production line and knowing how equal angle is produced, will help you to know the different applications, advantages and disadvantages of each type of equal angle and based on that, choose the desired equal angle.
Equal Angle Formed
Equal Angle Formed profile consists of two perpendicular sides and is used in different structures. In general, this product is used in composite and single form in building construction projects. This L-shaped profile is one of the most important steel structures. Which are divided into two categories of equal angle and unequal angle with flanges.
Equal Angle
An Equal Angle with equal flanges has two rounded edges that are the same length. This product has high welding capability and it can be connected to other structural elements such as beams, because with its bending feature, it makes welding easier and provides a better space for welding.
The size of this product is determined based on two numbers called the equal angle size. The number on the left side indicates the size of the flanges in millimeters, and the number on the right side indicates its thickness also in millimeters. This product is used in the construction of railways, ships and buildings.
Unequal Angle
This product has unequal sides and it can be easily recognized by eye. This profile is stronger than the equal angle with flange. The flanges of this profile form a 90-degree angle with each other, and for this reason, it is used in bridge construction, industrial structures such as sheds and the load of the structure. This profile is produced according to EN 10025-2, DSTU and GOST standards. This product is supplied in market with thickness of 3,4,5,6 and 7 mm. The sizing of this product is a bit different and three numbers are used. The first and second numbers indicate the size of the flange and the third number indicates its thickness.
Naming Method of Equal Angles
As mentioned above, the equal angles consist of two flanges and for naming them, two characteristics like length and thickness of flanges are used. To name this product, it is marked with the letter “L”, and if it has equal flange, the size of the flange is inserted after the letter L, and if the flanges are unequal, after L, we see the multiplication of the two lengths of the flanges.
Technical Features of Steel Equal Angle
One of the technical features of the steel equal angle is that it has high resistance to impacts and pressures on the building. Therefore, its usage makes the structure more resistant to pressures, and use of this profile is typically very useful in the construction projects which has very high weight.
Applications of Steel Equal Angle
*Supporter of Structure: Some structures, such as commercial buildings and sheds cannot withstand the pressure of the building and therefore this product is used as an auxiliary part and support. In tall structures such as towers and skyscrapers, the presence of this element is felt and seen more.
*Resistance Element of Structure: Another application of steel equal angle is in telecommunication and radio towers. The reason for this application in these towers is that they can be resistance in bad weather conditions and events, so it can be helpful for telecommunication towers against earthquakes and storms.
*Metal Structures Construction: One of the most important applications of equal angle is the construction of steel structures. The metal frame consists of vertical and horizontal columns that are bolted or welded. The cross section of the equal angle is such that it makes welding easier.
*Bridge Construction: This product is also used in the bridges construction. For instance, to build bridge decks, the equal angle is used to reinforce concrete. Equal angles are also used in fabrication of bridge components such as arches, beams, supports and pedestrian paths.
Advantages of Steel Equal Angle
In addition to its many applications, this product also has advantages and disadvantages. As mentioned, the appearance of this product is designed in such a way that welding operations can be easily performed on it. But this is not the only advantage of this product and it has other advantages that are mentioned below:
Affordable Price: Price of Equal Angle is lower than other profiles such as beam. Beam is the main part and material in building construction, but in projects with large volumes of building materials, construction costs will be very high, so instead of using beam, it is better an Equal Angle is used in such projects.
Easy Installation: To install this product, you only need a welding machine and a technical worker. Although the experience and skill required to cut and weld the equal angle, but because of its surface it is easily welded to the beam.
Less Repairs: The structures which are made by an equal angle have lower maintenance costs because the equal angle is made of steel, which is very resistant to heat and cold and lasts for many years.
Various of Size and Dimension: The equal angle is supplied with different size and dimension in market that is suitable for various projects and construction managers can buy it in desired dimension. Thickness of this product is between 3 mm. and 28 mm.
Recyclability: The steel equal angle has recyclability feature and after being in the form of scrap, it can be easily recycled and melted again in the furnace and used to produce various steel products.
Disadvantages
– If this steel is not covered by stainless coating, it may rust and corrosion due to adverse weather conditions such as humidity and heavy rainfall.
– It is flammable. The equal angle is a steel product and has less flammability than other building materials such as wood and etc., but if it is exposed to fire for a long time, it is flammable.
The Last Word
Steel Equal Angle is a steel product that is widely used in the buildings construction, automotive industries, bridges and as a support for structures. The L-shaped design of this product makes it has good ability of welding and screwing. This product is manufactured in thicknesses of 3 to 28 mm. Sarir Sanat Amir Company, with several decades of experience, is a manufacturer of steel equal angle in different sizes by roll forming method. For more information about this product, you can contact the experts of Sarir Sanat Amir company.
