At Bonn Metal Construction Industries, we have established ourselves as the leading distributor in supplying steel structures in UAE. From UAE, we have branched out and partnered with other leading brands and now we have presence in over 10 countries spread throughout the Middle East, in Africa and India.

What is angles/channels?

Angle bar is also known as the angle iron. It is a long steel which has two sides that are perpendicular to each other. Angles are found generally as L-shaped and they have degrees such as 90◦ between them. There are two types of angle depending on whether the legs of the ‘L’ are equal or unequal in length.

Angles are usually made up of stainless steel and because of this composition; they are very resistant to corrosion and heat.

Steel channel is a structural material made of steel. It has a C-cross section, a vertical back (also known as a web) and two horizontal extensions at the top and bottom (called flanges). Channels are often used in buildings’ rafters or studs and can be used to create vehicle frames

Manufacturing of angles/channels

An angle bar is fabricated from hot-rolled carbon steel or from a high strength low alloy steel. It can also be made of galvanized steel.

A steel channel is made from a hot rolled mild steel. The inside corners of the steel channel have their specific radii, and these radii give the channel the strength and rigidity to be used for other structural and construction projects.

They are usually made to dimensional standards ASTM 36. After hot rolling, the angle bars and steel channels undergo additional processes after which they are painted or galvanized so they can be corrosion resistant.

Types of angles / channels

We have a complete selection of angles and channels available at Bonn Metal Construction Industries. They all have unique characteristics; and these characteristics are what are applied to give them different applications.


C Channel

 C Channel is a long strip of steel with a groove-shaped section. It is a carbon structural steel for construction and machinery. It is a section steel with a complex section and its cross-sectional shape is a groove. Channel steel can be divided into 4 types according to its shape: cold-formed equal-side channel steel, cold-formed unequal-side channel steel, cold-formed inner-coiled channel steel, and cold-formed outer-coiled channel.

At the same height, light channel steel has narrower legs, thinner waist and lighter weight than ordinary channel steel. No. 18-40 is large channel steel, and No. 5-16 channel steel is medium-sized channel steel. Imported channel steel indicates the actual size and relevant standards. The import and export orders of channel steel are generally based on the specications required in use after the corresponding carbon steel (or low alloy steel) steel grade is determined. Except for the specication number, channel steel has no specific composition and performance series.


H beam

The H-beam has wide flanges, because of this it is referred to as WF or wide flange beams. H-beams mostly used in constructing bridges and buildings, trailers or cranes.


The specifications of H beam are expressed as height × flange width with each having a standard cross section dimension in mm.

Height × Flange width Standard cross section
100 × 100 8
125 × 125 8
150 × 150 8
175 × 175 13
200 × 200 13
250 × 250 13
300 × 300 13
350 × 350 13
400 × 400 22



I beam

An I-beam has smaller flanges when compared to the H-beam as well as tapered edged. It is generally used to support trusses and in building framework.

The horizontal element of the I-beam is the flanges while the vertical element is the web.  The beam is specified technically as flange width × web width with both the flanges and web having thicknesses.


Grade A572Grade 50, A36,Q235,Q345,Q195,Q215,S235JR/S235/S2355JR/S2355
flange width 100-350 mm
flange thickness 3-14mm
web width 150-600mm
web thickness 3-12mm


Bonn Metal Construction Industries are proud of the partnerships that we have built with our customers over the years. We are top rated for prompt delivery and have a very high customer satisfaction anywhere in UAE. We deliver both standardized and customized structures.


General Information

What are angles and channels in construction?

Angles and channels are structural steel shapes used in construction and engineering. Angles are L-shaped pieces of steel, while channels have a C-shaped cross-section. Both are used for various structural applications.

What are the common applications of angles and channels?

Angles and channels are used in a variety of applications including building frames, bridges, support structures, and in the construction of machinery and equipment.

Types and Materials

What types of angles are available?

Angles come in equal leg (where both sides are of equal length) and unequal leg (where one side is longer than the other) varieties. They can be made from materials like carbon steel, stainless steel, and aluminum

What types of channels are available?

Channels are available in different shapes such as C-channels, U-channels, and PFC (Parallel Flange Channels). They can also be made from materials like carbon steel, stainless steel, and aluminum.

Installation and Usage

How do I install angles and channels?

Angles and channels can be installed using bolts, welds, or other fastening methods. They are often attached to other structural elements using connectors and fittings that match their size and shape.

Can angles and channels be cut to size?

Yes, angles and channels can be cut to the required size using appropriate cutting tools such as saws, grinders, or plasma cutters. Ensure to smoothen any sharp edges after cutting to prevent injuries and ensure a good fit.

Load and Structural Support

How much weight can angles and channels support?

The load-bearing capacity of angles and channels depends on their size, thickness, material, and the span of the support. Refer to manufacturer specifications and engineering guidelines for exact load capacities

Do angles and channels need to be reinforced?

In some cases, angles and channels may need reinforcement, especially for large spans or heavy loads. This can be achieved by using thicker materials, adding additional support structures, or using multiple angles/channels in combination.

Maintenance and Durability

How do I maintain angles and channels?

Regular inspections should be conducted to check for any signs of corrosion, deformation, or damage. Clean the surfaces periodically to remove dust, debris, and any corrosive substances.

Are angles and channels durable?

Yes, angles and channels are designed to be durable and can withstand significant structural loads. Their durability depends on the material and environmental conditions. Galvanized and stainless steel options offer enhanced corrosion resistance.


Are angles and channels safe to use?

Yes, angles and channels are safe when installed correctly and according to building codes and manufacturer guidelines. They provide robust support for various structural applications.

What are the signs of failing angles and channels?

Signs of failure include visible bending or deformation, rust or corrosion, cracks in the material, and separation from the supporting structures. Immediate inspection and repair are required if these signs are observed.

Standards and Compliance

Do angles and channels comply with industry standards?

Yes, angles and channels are designed to comply with various industry standards such as ASTM, DIN, and ISO. Always check the specific product for compliance certifications.

Are there any special regulations for using angles and channels?

Regulations can vary by region and application. Ensure that the use of angles and channels complies with local building codes, construction standards, and engineering practices.

Purchasing and Cost

How do I choose the right angles and channels for my needs?

Consider factors such as load requirements, environmental conditions, size, and material. Consulting with a structural engineer or supplier can help you select the appropriate angles and channels.

Where can I buy angles and channels?

Angles and channels can be purchased from building supply stores, steel fabricators, construction material suppliers, and online retailers. Ensure you buy from reputable sources to get quality products.

What is the cost of angles and channels?

The cost varies based on size, material, and any additional coatings or treatments. Contact suppliers for specific pricing and quotes.

Customization and Special Considerations

Can angles and channels be customized?

Yes, angles and channels can be customized to specific lengths, shapes, and coatings to meet unique project requirements. Consult with the manufacturer or supplier for customization options.

Are there special considerations for installing angles and channels in coastal or corrosive environments?

In coastal or corrosive environments, it’s important to use stainless steel or galvanized steel with additional protective coatings to prevent rust and corrosion. Regular maintenance and inspections are also critical in these conditions.

Technical Support

Can I get technical support for using angles and channels?

Yes, many suppliers and manufacturers offer technical support and guidance for selecting and installing angles and channels. Consulting with a structural engineer can also provide additional support and ensure proper installation.