Steel is one of the most important materials in the construction industry. It can be fashioned into many things including angles. Steel angles are typically used for their low cost and durability. They may be used to build structural components or for support. These angles are often seen in buildings, factories, warehouses and construction equipment.
What are steel angles?
Simply put, the steel angle is an extruded bar that has two flanges at right angles to each other. Thus, the bar has a L-shaped cross section. The two flanges may be equal or unequal. When the flanges are equal, the angle is referred to as an equal angle else it is known as an unequal angle. The length of the flanges can vary greatly and may even be customized as per requirement. Smaller angles are often referred to colloquially as bar sized angles. The length of the flanges in these angles can go up to 2 ½”. Other common sizes for angle irons range from 3″ x 2″ x 3/16″ to 8″ x 8″ x 1″. The last dimensional unit refers to the thickness of steel used. In terms of length, angles are typically cut into 20’ or 40’ lengths. When buying angles, the ideal length depends on the application.
These angles are made in bending machines or by section rolling mills. Rolled angles are typically stronger than bent angles. Thus, bent angles are usually not used in situations involving heavy loads. Angles may be manufactured from structured steel, i.e. carbon steel, stainless steel and alloyed steel or other non-ferrous metals such as copper, aluminum and other metal bearing alloys. Depending on the end use, they may be given a protective coating such as an impact resistant paint, polymer based film or a zinc coating. These coating may increase the price of the angles.
How is it used?
Depending on the size and thickness chosen, these angle irons may be used for building warehouses, bridges, cable towers, communication and power towers, etc. In such cases the angles are clearly visible. In building construction, angles are used to create rigid reinforcing structures for concrete. They play an important role in wide-span support elements. Angles are also useful when creating openings and frames for doors and windows.
They may also be used in our everyday life to build shelving units, frames for furniture, benches, chairs, and fencing posts. When it comes to building support structures for air coolers and air conditioners, etc. unequal angles are usually the better choice. Thus, it isn’t used only by builders but by laymen as well.
Online or offline
Today, you can order steel angles for your project online as well as offline. Most manufacturers have an online presence and enquiries can be made through the website or via email. What’s important to note is that the manufacturer must be reliable. The angles must comply with local regulations and technical specifications. You must be able to trust them to use the best quality materials for manufacturing and to finish them properly. Accuracy and quality control is important too. So, don’t base your buying decision solely on price- look at the company’s reviews, shipping policies, warranties, and only then make your decision.