Why galvanized steel doesn’t rust quickly?

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Why galvanized steel doesn’t rust quickly?

Wouldn’t it amaze you to know that galvanized steel has been in existence for over 2000 years? Yes. Galvanized steel has been used by human civilization for over two millennia because of its ability to resist rust for a very long time. We should understand that galvanized steel doesn’t rust for a long time but it doesn’t mean that it is permanently rust proof.

The length of time for which galvanized steel resists rusting depends on the process and thickness of the protective zinc coating on one hand and on the type of environment, on the other.

There are several factors that can rust and corrode galvanized steel

  • When the relative humidity is in excess of 60%
  • When the air or water is high in sodium chloride content
  • Wet environment
  • Rising temperature combined with humidity and industrial pollution
  • Exposure to hydrogen sulphide produced from volcanoes, natural gas, sewer gas
  • Pollution caused by sulphur dioxide in urban areas
  • Exposure to strong alkalis
  • Combination with plaster and cement with a high proportion of chlorides and sulphates
  • Acid rain
  • Mosses and lichens
  • Contact with copper, pure iron or steel can lead to corrosion of galvanized steel Galvanized steel can combine well with concrete, mortars lead, tin, zinc and aluminium.

Galvanized steel is by far the most corrosion resistant material on the planet . The addition of a coat of paint to galvanized steel helps it to withstand corrosion for an even longer period. Research shows that hot dipped galvanized steel lasts longer than electroplated galvanized steel when it is intended for prolonged use outdoors.

Let us explore why the galvanization of steel increases its ability to withstand rust.

A study shows that galvanized steel kept in wet environments will last around 10 years. In places of 100% relative humidity, it can last without rusting for 34 years while it can last for 211 years on average in places with relative humidity below 60%. A building made with galvanized steel may not need any maintenance for over 50 years.

Galvanized steel is most resistant to rust corrosion and that is the main reason why it is used for construction projects, vehicles, nuts, bolts, nails and everything that is exposed to the outdoors.

Galvanized steel is the oldest building material used by humans that is still in active use. However, the technology for creating environment friendly galvanized products is changing with time.

Apollo Coastguard products are made of hot dipped galvanized steel coil that is specially designed to meet the needs in the coastal areas. They are mainly used for the purpose of weatherproof roofing that can last for several decades. Please visit https://aplapollo.com/ for more information about our products.

Top 5 benefits of using structural steel in residential construction

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Top 5 benefits of using structural steel in residential construction

Steel is such a versatile material that it can be put to good use in any form of construction. Residential construction can use structural steel for the obvious benefits that it provides. If you need a building material that is safe, durable, budget-friendly and aesthetically pleasing, you need not look further. Let us explore the top 5 benefits of structural steel in residential construction.

  1. Combination of beauty and strength – Steel gives architects the freedom to experiment with different designs, colours, textures and shapes. The natural qualities of durability and malleability help architects to combine beauty with strength in their designs. Steel can be bent to any shaper or form which gives designers great flexibility to experiment with novel designs.
  2. Efficiency in Use – Steel is a material for all seasons and all constructions. It can be assembled quickly and efficiently with pre-manufactured components. Entire frames can be constructed in days rather than weeks. Structural steel is lighter in weight compared to other foundation materials like concrete which keeps the foundation compact and simple. The time and cost saved lead to operational efficiencies and faster return on investment.
  3. Where aesthetics meet functionality – Steel is a versatile material that gives shape to the designer’s dreams in terms of shapes and forms. These aesthetics are supported by the basic qualities of steel that include its spanning ability, stability, noise dampening capability, repeated recyclability and the speed and accuracy of manufacture and assembly.
  4. Environment friendly – Did you know that steel structures are significantly lighter than concrete foundations and less damaging to the environment? Being lighter materials, they are easier to transport and burn less fuel. Steel foundations can be reused at the end of a building’s life leading to zero wastage which makes it the most recycled material in the world. Nothing made of steel is ever wasted as it can be recycled multiple times. It is energy efficient so it can create a cool ambience in hot climate zone while creating insulated homes in the cooler climes.
  5. Budget-friendly option – Structural steel is extremely durable and needs no maintenance. It can easily last over the lifetime of the house. It can withstand winds, fire, earthquakes, snow and other natural disasters which makes it an ideal building material for all climates and geographies. Steel can be recycled when the structure is demolished. The use of steel expedites the completion of the project leading to process efficiencies and cost savings.

Structural steel combines beauty with inherent strength and becomes an intelligent material that can be used in residential construction. It is a robust material that can be used in a variety of designs without any compromise on aesthetics. Combined with its natural characteristics, structural steel becomes an architect’s delight and this explains why structural steel is picking up in popularity as the smart building material of the future.

APL Apollo is India’s largest structural steel manufacturer that is shaping the future of the construction industry. You can check out all our product offerings at https://aplapollo.com/ and we will be happy to assist you to make the best choice.

Everything you need to know about hollow steel section pipes

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Everything you need to know about hollow steel section pipes

Hollow steel section pipes are the most all-round and efficient form for construction. They have been extensively used in many of the imposing structures and architectural marvels in the world. Hollow steel section pipes are also called structural steel tubes. They are mostly used in welded frames and columns and also as beams

Hollow steel sections can be of three main types –

  • Rectangular Hollow Sections (RHS)
  • Square Hollow Sections(SHS)
  • Circular Hollow Sections (CHS)

Each type is used for a particular purpose because of its peculiar characteristics.

Rectangular Hollow Sections

These are usually used for mechanical, construction and structural applications since they have a flat surface that can be used for welding and other fabrication work. The rectangular shape allows for easy joining because it needs minimal edge preparation. It is used by architects because it combines clean lines with structural strength.

Square Hollow Sections

Square hollow sections are somewhere in between rectangular and circular hollow sections. They have a flat surface which makes them easy for joining and welding with clean lines. It has a symmetrical appearance and works well in certain designs. They are used for constructing columns or posts. They are not viable for beams as their cross-section cannot be bolted to other shapes. They have an ideal balance of strength utility and appearance and can be used in a variety of applications.

Circular Hollow Sections

Circular hollow sections were the earliest form of hollow section and are commonly used in structural, mechanical and construction applications. The smoothness of edges

and clean lines and absence of sharp edges makes it a much-loved preference of architects. It can be used in a variety of applications and gives an aesthetic look to the structure. Circular hollow sections have tubular cross-sections that provide higher resistance to torsion. The thickness of the walls is uniform around the circle which makes these tubes perfect for use with multi-axis loading uses.

Steel tubes are used for a variety of domestic and industrial purposes because of their ability to handle extreme heat and pressure. Gas pipes and domestic appliances make use of steel tubes. These tubes are extremely strong and efficient and give structures a better strength -to- weight ratio as compared to concrete, wood or normal steel. This shape enables better spans and optimum material usage. They help in creating lightweight and open structures that are pleasing to the eye and functionally efficient.

Hollow sections are used in various applications in diverse areas. They have been used in iconic structures like the London Eye or the Emirates Stadium. They are also used in eye-catching skyscrapers as well as vehicle trailers, fences, handrails and several other constructions and mechanical applications. Hollow steel sections are a combination of beauty and strength, a combination of modern functionality and aesthetic looks that make them so popular.

APL Apollo Tubes Limited manufactures hollow section steel tubes of high tensility that are used in diverse construction applications as well as in other industries like automotive, machinery, furniture, etc. To learn more about our product offerings please visit https://aplapollo.com/ and we will be glad to assist you.


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