Structural Channel Sizes At Bushwick Metals

Intsel Steel

Structural Channel Sizes At Bushwick Metals

Across Lake Pontchartrain in Louisiana run four lanes of traffic over the world’s longest overwater bridge at 24 miles long. It’s a classic example of a beam bridge, a simple style that uses beams across a flat surface.

The largest structural channel sizes are used to support bridge decks like that of the Lake Pontchartrain Causeway. These prove ideal for certain construction projects thanks to being lighter and more flexible than I-beams or H-beams, which are too rigid to absorb much flex from weather or other forces.

Let’s take a look at structural channels, how they’re sized, and how they’re used in modern construction.

About Structural Channel Beams

Channel beams look like a squared-off “C”, giving it the C-channel name to distinguish it from I, H, or W beams, which have flanges extending from both sides of the beam. C-channels come in a range of sizes and thicknesses, which makes them useful in several ways.

These can be found in construction since the wide, flat side is ideal for attaching to items and providing support. They are made from hot-rolled steel. The channel has sharply angled outer edges and radius corners on the inner surface.

Along with bridges, channels also find their way into the frames and bracing of walls and roofs in construction. In industrial settings, they’re used for truck trailers and conveyor systems, among other uses.

The letter in a beam name indicates the shape of the beam. The description of a specific beam starts with the letter, then a number that tells the height of the beam. The second number tells the weight per foot of the beam.

All the sizes and shapes come from dimensional standards adopted by the Association of American Steel Manufacturers.

Steel Grades for Channel Beams

Structural channels tend to be made of ASTM A36 grade industrial steel and come in stock lengths from 20 to 60 feet.

A36 channel is a low-carbon structural steel used in a variety of applications, like trailers and structural support. This type of steel is easily machined to create the many different sizes needed to support these applications.

A572-50 is a high-strength, low-alloy steel more commonly used for riveted or welded construction like you see in a girder bridge. A588 is also high-strength and low-alloy steel that’s used in welded applications where corrosion resistance is a key factor in building.

Structural Channel Sizes

When buying structural channel steel beams, there are several different measurements used in determining different sizes. The main number runs from 3” to 15” and details the channel depth or height of the channel. Flange width gives the width of the horizontal parts of the beam or legs make the top and bottom sections of the “C”.

Web thickness tells you how thick the metal is in the center section of the channel. Steel channel weights range from 3.5 pounds to as much as 50 pounds, telling you the weight per foot of the particular grade.

Below are the various sizes we offer:

Size  –  Weight  –  Web thickness  –  Flange width
3 in  –  3.50 lb  –  0.132 in  –  1.372 in
3 in  –  4.10 lb  –  0.170 in  –  1.410 in
3 in  –  5.00 lb  –  0.258 in  –  1.498 in
4 in  –  5.40 lb  –  0.184 in  –  1.584 in
4 in  –  4.50 lb  –  0.125 in  –  1.584 in
3 in  –  6.00 lb  –  0.356 in  –  1.596 in
4 in  –  6.25 lb  –  0.247 in  –  1.647 in
4 in  –  7.25 lb  –  0.321 in  –  1.721 in
5 in  –  6.70 lb  –  0.190 in  –  1.750 in
5 in  –  9.00 lb  –  0.325 in  –  1.885 in
6 in  –  8.20 lb  –  0.200 in  –  1.920 in
6 in  –  10.50 lb  –  0.314 in  –  2.034 in
7 in  –  9.80 lb  –  0.210 in  –  2.090 in
6 in  –  13.00 lb  –  0.437 in  –  2.157 in
7 in  –  12.25 lb  –  0.314 in  –  2.194 in
8 in  –  11.50 lb  –  0.220 in  –  2.260 in
7 in  –  14.75 lb  –  0.419 in  –  2.299 in
8 in  –  13.75 lb  –  0.303 in  –  2.343 in
9 in  –  13.40 lb  –  0.233 in  –  2.433 in
9 in  –  15.00 lb  –  0.285 in  –  2.485 in
8 in  –  18.75 lb  –  0.487 in  –  2.527 in
10 in  –  15.30 lb  –  0.240 in  –  2.600 in
9 in  –  20.00 lb  –  0.448 in  –  2.648 in
10 in  –  20.00 lb  –  0.379 in  –  2.739 in
10 in  –  25.00 lb  –  0.526 in  –  2.886 in
12 in  –  20.70 lb  –  0.282 in  –  2.942 in
10 in  –  30.00 lb  –  0.673 in  –  3.033 in
12 in  –  25.00 lb  –  0.387 in  –  3.047 in
12 in  –  30.00 lb  –  0.510 in  –  3.170 in
15 in  –  33.90 lb  –  0.400 in  –  3.400 in
15 in  –  40.00 lb  –  0.520 in  –  3.520 in
15 in  –  50.00 lb  –  0.716 in  –  3.716 in

Uses for Steel Channels

The size and weight of a structural channel determine its use, and additional features can be added for specific use. Some have short edges or lips added to the end of the flanges, making the channel tougher, similar to rectangular tubing. Others might have holes added for use in bolting or a ridge on the back to increase rigidity.
In building, the channels can be used like studs would be in a traditional wood framing. They’re commonly used to build structures like garages, warehouses, and other metal buildings. They bear the vertical load of a building and can hold more weight than wood framing.Used vertically, they function like regular framing, but they can also be used horizontally in pole barn walls, as they don’t warp or twist like wood. Steel channels wrapped around wood beams add extra strength.

Steel channels work well as roof rafters, as they are smaller and lighter while supporting the same amount of weight as heavier wood rafters. However, steel won’t be damaged by rot, fungal decay, or moisture.
For window and door frames, structural channels can make more secure frames than wood. The back of the beam gives a flat surface for mounting the door or window. Steel frames commonly crop up supporting commercial fire doors and sub-grade basement doors.

Get High-Quality Structural Channels

Various construction projects benefit from using structural channels in their walls or as trusses for a bridge. These beams offer a bit more flex than other types of beams but provide a high amount of strength at a lighter weight.
No matter what structural channel sizes you need for your project, contact us to check our inventory of high-quality structural steel. We have convenient locations along the East Coast with next-day shipping available.

What Is A Steel Channel Stringer?

Starting a new construction project has the potential to invite many confusing questions to your mind whenever you first begin. You’ll often consider things like “What are we building?” or “Who is this being built for?”

If you find yourself starting a construction project for a building that includes stairs, a whole set of new questions come into play as well. One of these being what material is best to use when building stairs.

Steel channel stringer is one of the most common and reliable stringers in the market right now. They’re heavy-duty, cost-efficient, and widely available. In this article, we’ll introduce what the steel stair stringer channel is, its benefits, and where to buy high-quality steel stair stringers.

Quick Review of the Stair Anatomy

First and foremost, we need to understand the anatomy of stairs as it’s important to know why stringers are important. Most metal stair makeups follow the same build as stairs built from any other material. They include risers and treads (the parts that people step on), and stringers that support the former two parts.

We won’t go into too much detail about the other two parts, so for now we’ll just focus on the stringers.

What is a Steel Channel Stringer?

As mentioned, stringers are the parts along the side of treads and risers that support the stairs and prevent them from collapsing or tilting. There are many types of materials that are commonly used for stringers. These materials (aluminum, steel, wood) are even interchangeably used between commercial and residential buildings.

However, some are better for certain types of stairs and buildings. In this case, steel channel stringers are the best for commercial building stairs as they offer great support. These commercial stairs constantly have people walking on them, so having great support is necessary.

If you’re concerned about the size of the steel stringers, then you’d be happy to know that they come in a variety of shapes and thicknesses. The structural steel they are made of is highly versatile and can fit into almost any stair makeup.

As for their actual structure, they are long beams with their cross-sections cut off in a ‘c’ shape. Steel channel stock is generally much lighter than other metal products, and much more flexible.

Common Types of Steel Channel and their Uses

Just like there are multiple types of stringers available for stairs, there are multiple types of steel channels used for making stringers.

The standard selections for making steel stringers are steel c channel, structural tube steel, and steel plate. The difference between these types is size and weight. However, the majority of steel channels seldom go more than 12 inches deep.

The A36 variety goes up to a stock length of 20 ft. This grade of steel channel is specifically designed for stair stringers. These are actually called junior channels since they can be used for other projects that require lightweight structure support.

Benefits of Steel Stair Stringer Channel

Now let’s take a look at some of the benefits of steel channel stringers.


As mentioned earlier, this type of metal is highly flexible and weighs less than other metals. That means you’ll be getting a great amount of versatility from this product without risking something such as durability or integrity.

What’s more, is that this product comes with a varying amount of different steel types. You can pick and choose the right type of steel channel for your project depending on what thickness or size you need.


Just like mentioned above, steel is one of the most durable construction metals that is also widely available. Despite its flexibility, this material can withstand years of use without seeing much wear and tear. You’ll also be able to load high amounts of weight onto these if you choose to make them into stringers.

On the note of durability, steel channel stringers can actually be galvanized to protect them from exterior elements such as heat and rain. Galvanizing is the process of coating a metal in zinc to protect it from elements that would originally pose harm to the metal.


Steel is one of the most commonly available metals in the market and is used in a variety of construction products. With that in mind, it comes as no surprise that the metal is actually pretty nice on the pocket.

Steel stringers are cheaper than their aluminum counterparts. But remember to keep in mind that prices for metals fluctuate depending on their availability. Another thing that also affects the price is whether or not the material is going to be galvanized or painted. Be sure to take into consideration whether you are purchasing the raw steel stringers or not before weighing the costs of the two materials.

Easy to Install

Wood and aluminum stair stringers can prove a challenge to install since they are not the most flexible of materials. Steel is one of the easier construction metal materials for installation because of its flexibility. In particular, for stair stringers, all you have to do is bolt them together.

Here are some additional benefits of steel channel stringers:

  • Low maintenance
  • Low cost to install in addition to the low cost of the material
  • Flame resistant
  • Easy to clean
  • Aesthetically pleasing- can be painted or even used for unique designs

Where to Buy the Best-Quality Steel Channel Stringers

If you’re looking for the best quality steel stair stringer channel for your project, then look no farther as Bushwick Metals has the highest quality steel near the Bridgeport area.

We’ll supply you with the best quality steel channels at a charming price. We even offer additional steel products that include beams, plates, and bars. We’re your one-stop-shop for all your construction metal needs.

Our services don’t stop there. We can even do plate-processing and metal bending or shaping if that’s what you find necessary. If you find that steel channels aren’t the best for your project, we also offer other channels that’ll suit your needs. So if you’re interested in using steel channel stringer for your stair project, go ahead and visit our website to get a sales quote today!