Structural Steel Tubes in PEB

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Structural Steel Tubes

Structural Steel Tubes in PEB

Structural steel tube is amongst the most preferred construction material for engineers, architects, contractors and fabricators since it is highly durable, tensile and corrosion resistant. Around the world, there is a shift toward high-performance materials in structural engineering. In the steel construction sector, this has been more evident with built-up sections, but hollow sections are now in the process of raising the strength levels of their products.

The use of steel tube has the potential to reduce material costs and project cost. The popularity of steel tube in construction has increased dramatically over the years as engineers have become aware of the advantages of steel tubes. The incorporation of steel tube connections in the construction standard have simplified connection design and contributed to the rise in use of hollow structural steel.

Steel tubes are very efficient sections and their major benefits are inherent in their shape and engineering properties. The closed shape and relatively large moment of inertia about the weak axis make them highly resistant against the torsional effects. PEB has seen tremendous growth in the last decade over the conventional steel building. Currently PEB manufacturers are using built-up sections manufactured by welded plates. Use of structural steel sections in PEB reduces the steel consumption & overall project cost by 10-15%. This also saves the transportation & erection cost as compared to built-up sections.  

How to make an efficient PEB using Structural Steel Tube

Use of High Diameter High Thickness Tubes in primary members

High diameter high thickness tubes are used as primary member for Pre-Engineered Building. Apollo Column offers India’s largest hollow steel sections up to 300x300mm in size with 12 mm thickness

Bringing New Tube Making Technology

Earlier there was constraint on using steel tubes in PEB due to availability of standard sizes only. But now this constraints totally eliminated by Direct Forming Technology, an Italian invention. APL Apollo is the first company to introduce this technology in India.

Factory Controlled Fabrication

Fabrication work using structural steel tube can be carried out in small factory set-up. Prefabrication is the singled out approach to build steel buildings using steel tube. This allows the considerable part of the process to happen on the workshop floor

Erection using Bolted Connection

Steel tube sections are fabricated at the factory to the exact size, transported to site and assembled at site using bolted connections

Different Types of Steel Pipes & Tubes

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Steel Pipes and Tubes

What are different Types of Steel Pipes & Tubes

Steel pipes and tubes industry is one of the important segments of the Indian steel sector. It contributes around 12 % of the India’s steel consumption. Steel pipes & tubes are long hollow sections that are used for a variety of purposes. They are produced by two methods which result in either a welded or seamless pipe. In the both processes, raw steel is first cast into a more workable starting form. It is then made into a pipe by drawing the steel out into a seamless tube or forcing the edges to join together by welding. These are used mainly to convey fluids, and pneumatic conveying of solids. It can also be used as building material for structural applications. They are employed to protect electrical wires. They also find utility in automobiles, heating and plumbing systems, flagpoles and street lamps to name a few.

Now let us see the different types of steel pipes & tubes:

1. Structural Steel Tube:  The tubes employed in constructions are known as structural tubes. They encompass strength, tolerance, and other beneficial properties that make them the right choice for building purposes. They find their usage in a myriad of constructional purposes like building towers, bridges, cranes, highway guardrails, and sign supports, etc. They are also referred to as high-strength welded steel tubes or HSS. The structural tubes are of three types – Rectangular Hollow Sections, Square Hollow Sections, and Round Hollow Sections. Structural steel tubes are used in construction of urban infrastructure, warehousing and affordable housing

2. API Pipe: The American Petroleum Institute specification (API) covers seamless and welded steel line pipe. This is steel pipe for pipeline transportation systems in the petroleum and natural gas industries.  API 5L is suitable for conveying gas, water, and oil.  

3. Ductile Iron Pipe: Ductile iron pipe is made of ductile cast iron commonly used for potable water transmission. These pipes are manufactured by centrifugal casting.

4. Precision Tube: Precision Tubes are widely used in making shock absorber, gas spring applications, tie rods, propeller shafts etc. These tubes are manufactured from high grade steel and are tested on various International as well as Indian standards. They are also used for manufacturing white goods.

5. Water Line Pipe: Steel pipes are comparatively expensive, but they are the strongest and most durable of all water supply pipes. They find their usage in water transportation for irrigation, industrial water lines and many more.  

APL Apollo – A Journey Through Time

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APL Apollo – A Journey Through TimeAPL Apollo – A Journey Through Time

APL Apollo is one of the leading manufacturers of steel pipes in India. We are headquartered in Delhi NCR and have eleven manufacturing units that have a combined capacity of 2.5 Million MTPA. Our units are strategically placed in Sikandrabad (4 units), Bengaluru (2 units), Hosur, Dujana, Raipur, Murbad and Hyderabad to ensure a pan India presence for the brand.

However, the pinnacle of success that we have reached today is a result of our laborious past – spanning over three decades. The company was founded in 1986 by the late Mr. Sudesh Gupta named as Bihar Tubes Pvt. Limited. In the same year, we set up our first manufacturing unit in Sikandrabad, Uttar Pradesh. In 1993, we listed ourselves as a public limited company, thus adding another feather in the cap. We also started manufacturing galvanised tubes in the same year. Between 1994 – 95, we commissioned a new galvanising plant and also received ISI certification. This was also a proud moment as we got listed on the stock exchanges. In 1995, we entered into the capital market by way of a public issue amounting to Rs 438 lakh.

In the next decade, we evolved further and took the company to new heights. We imported cutting edge technology from Kusakabe, Japan and installed it across all three of our mills. It was during this time that we diversified our manufacturing to include the production of structural pipes. As our determination for new and innovative products drove us to perform better, we soon became the pioneers in pre galvanized steel pipe manufacturing in India along with developing in-house hollow sections across a wide range of sizes. Between 2000 – 2002, we also commissioned a new tube mill and the modern Galium mill. It was during this period that we received the ISO 9001:2000 certification.

The period between 2007-2008 was also very significant for us as we expanded even further and acquired not one but two firms – Apollo Metalex Private Limited and Shri Lakshmi Metal Udyog Limited (Bangalore). In the following year, we commissioned a plant in Hosur, Tamil Nadu. It was also the year of our Greenfield venture with state-of-the-art mills. We also started several warehouses across India during this time.

Another significant development took place between 2011-12 as the name was changed to APL Apollo Tubes Limited. It was also during this time that we were awarded UL, CE, SGF France, ISO 14001:2004 and OHSAS 18001:2007 certifications. We also acquired Lloyds Line Pipes Limited Plant near Mumbai, thus continuing our expansion.

Between 2013-2015, we continued to grow with leaps and bounds and procured CRFH Coils from JSW Steel to expand our product range. At this time, we also started manufacturing door sections, window sections and railing tubes to add to our vast array of offerings. We became the first company in India to achieve the capacity of 1 MTPA in steel pipes. In 2016-17, we added prestigious achievements to our credit – established India’s first ever Direct Forming Technology line in Hosur, commissioned Greenfield facility at Raipur, Chhattisgarh also with Direct Forming Technology and were awarded patents for six product design types.

Our hard and quest for innovative products have made us one of the top five steel manufacturers in the world. Today we have 11 plants, 29 sales offices and 800 distributors. We are sprawled across 2000 towns and cities and have a retailer presence of 1,00,000. These numbers have been achieved with sheer determination and innovation, which is ingrained in our DNA.

What is the difference between steel tubes and steel pipes?

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What is the difference between steel tubes and steel pipes?

Many people confuse steel pipes and steel tubes to be the same thing and often use them interchangeably. However, a steel pipe and a steel tube are different from each other in a lot of ways. Starting from the procedure with which they are manufactured to their usage and shape – there are a lot of things that differentiate them.

Read on to know what factors distinguish them.

  • Thickness

    The thickness factor will easily help you comprehend the difference between a steel pipe and a steel tube. For a steel pipe, knowing the wall thickness or as it is called the “schedule thickness” is quite important as it defines its strength. Owing to their usage in gas and fluid transportation, it becomes necessary to know the inner diameter of the steel pipe that will determine their capacity. The thickness of a steel tube is measured in gauge if it’s thin and in fractions of an inch or millimeter if it’s thick.

  • Measurement

    The ways to measure these two are poles apart because of their usage. When it comes to pipes, the inner diameter is considered. The distance between the opposite points of the inner circle (the circle excluding the thickness) is called the inner diameter. For tubes, the outside diameter is measured which is the diameter between the opposite points of the outside of the tube (the circle including the thickness).

  • Tolerance level

    In comparison to the steel pipes, steel tubes have compacted manufacturing tolerance. The same ensures that they fit and perform efficiently.

  • Usage

    Because of their strength and compacted manufacturing tolerance, tubes are primarily employed in constructional purposes, engineering and automobile manufacturing. Whereas, the steel pipes are used as passageways for transmitting fluids and gases from one place to another.

  • Shape

    There is a difference in the shape of a steel pipe and tube. A steel tube is not necessarily always round. As they are employed for structural purposes, they can be square or rectangular as well. On the other hand, pipes always come in round shape. It’s quite tough to mould them. The steel pipes are pressure rated to keep the leakages at bay as they are used in transporting gases and liquids.

  • Production procedure

    The manufacturing process for both the steel pipes and steel tubes vary a lot. The steel pipes are of two types – welded or seamless. When raw steel is made into a pipe by stretching, a seamless pipe is formed and when the edges are forced together and sealed with a weld, welded pipe is formed. The process is easier and less time consuming as compared to the making of steel tubes. When it comes to steel tubes, a lot of processes, tests, inspections are performed during the production process.

  • Cost

    The production of steel tubes is lower as compared to steel pipes. Also, the manufacturing process of steel tubes has stricter requirements in terms of tolerances and inspections along with requiring more energy and labour. Hence, the price of steel tubes is higher than steel pipes.

Types of Steel Window Sections

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Types of Steel Window Sections

Windows are an indispensable part of any home or office – they let in the natural light and fresh air and ensure ventilation within closed walls. Window frames have evolved over a period of time and mainly in two respects – the raw material used in framing and the functional design of the sections of the frame. Steel window frames have become popular as it promotes high strength and longer durability.  With the enhancement in technology the role of a window has widened. The windows are designed to provide insulation against outside noise to reduce disturbance, protection from storms and prevention of rain water seepage. It also breaks the monotony of the walls and adds to the overall aesthetics of your home.


Steel window sections are preferred over wooden window sections as steel is lighter in weight, formation of structure is easier in steel as compared to wood and steel does not retain as much heat as wood.


Windows come in various varieties – depending upon its shape and style, they can change the entire look of the house or office. Choosing the right type of window for a particular location can be quite a task given the different styles, features and materials available in the market today. Here are a few things you can keep in mind when you are planning to replace those old, creaky windows or while building a new structure.


The window sections help in developing the steel window frames. A common way to classify window frames is by the way they open. In addition to being fixed, window frames can rotate or pivot around a vertical or horizontal axis, or slide. Along with this, it has several other features such as:

  • High Strength and durability
  • Long life
  • Cost effective as compared to wooden frames
  • Minimal maintenance cost
  • Better finish
Window L section

Size: 46mm×18mm, 52mm×24mm, 62mm×33mm
Thickness: 1mm to 2mm

Window T section

Size: 52mm×25mm
Thickness: 1mm to 2mm

Window Z section

Size: 52mm×25mm

Thickness: 1mm to 2mm

Making a good and well-informed decision is a crucial skill at every level. So choose wisely for good results.

How Steel Tube Industry is Helping in Saving the Environment?

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How Steel Tube Industry is Helping in Saving the Environment?

Whether you are looking for a more environment-friendly solution to your construction needs or wanting to learn more about making the right choice – this is a must-read for you. Over the years, the steel tube industry has evolved and the growth has also been accelerated due to growing environmental concerns. Today, we are among the top five steel tube manufacturing companies and we are expanding every day to meet the growing demands. In the process, we are also adding to environment conservation. Let’s take a look at how this is done!

Steel Is Recyclable

Most steel is 100% recyclable, which essentially means it can be made into other things after the original product is no longer in use. Easily traceable with magnetic separation, steel can also be easily recovered from waste and other places and utilized to make other things. This leads to an overall reduction in materials needed and also saves limited natural resources, thus saving the environment.

Steel Is Durable

When you opt for steel, you invest in a product that is much more durable than its counterparts. Over the years, this leads to reduction in production of materials thus saving time, energy and money. Often, fossil fuels are used for manufacturing these products and by providing more durable products, the steel tube industry is ensuring the reduction of finite resources.

Steel Reduces Waste

By producing sustainable products; the steel tube industry is reducing the waste in the environment. Steel being recyclable, is sent for processing, instead of adding to the non-recyclable waste that is increasing every day. This greatly helps the environment while creating quality products for our consumers.

Steel Replaces Wood

Steel tubes and pipes are replacing wood every day. This greatly reduces the need for felling trees thus leading to a greener tomorrow. The less use of wood also reduces deforestation and in turn lessens soil erosion, which often causes many natural disasters. Steel is more durable than wood and this leads to products lasting longer, which would have otherwise been replaced by more wooden products. It is also being used to build door frames and window frames and other structures, which were traditionally made of wood. This ensures that the structures last longer and do not get infested by pests or affected by weather, like in the case of wooden frames.

Apart from offering durability and great designs, switching to steel is also contributing towards conservation of the environment. Have you made the switch yet?