Steel pipe Archives - Bharat Steels

Different Applications Of Cold Rolled Steel

March 8, 2022

We have heard of steel being used in every process where durability and strength matters. We even know that steel cannot be used directly in the application and must be fabricated according to the needs. So, cold rolling is one such fabrication process to enhance the physical properties of the steel. In the cold rolling process, the steel dealers or manufacturers strengthen the steel by changing its shape without heat or pressure. The large steel coils are passed through the two parallel rollers keeping the temperature below the steel’s recrystallization temperature. Thus, the steel coils unwind, and each steel strip is squeezed and compressed. Hence, the resulting metal strips have increased hardness and yield strength. Therefore, one can say that cold rolling the metal strips is one of the significant functions in metalworking industries. Hence, in this post, let us see the different applications of cold-rolled steel in various industries.

Cold-rolled steel in construction:

The foremost application of cold-rolled steel is in the construction and development sector. We all know that steel is essential to make your building stand against the various climatic conditions. Similarly, cold-rolled steels are used significantly in the construction industry for framing purposes. The cold-rolled steels are light in weight and yet stronger than other metal framings. The cold-rolled framings are used in multi-storey building construction like hotels, dormitories, and related structures.The cold-rolled MS chequered plate are even used for the flooring purposes.

As mentioned earlier, cold-rolled steel is less in weight, and hence it can be shipped and assembled later. Similarly, the cold-rolled steel exhibits high tensile strength; it is sufficient to use fewer steel materials for structural support and reduces resource consumption. The cold-rolled steel is used in making bolts and screws for metal sheeting and sheeting rails.

Cold-rolled steel in home appliances:

Another application of cold-rolled steel is that they are used in home appliances extensively. It is hard to find even one home appliance without cold-rolled steel. The cold-rolled steel is used in washers, dryers, water heaters, computer hardware, refrigerators, and related household things. One can find numerous domestic appliances with cold-rolled steel because they have a higher tolerance than the other metals. Similarly, these steels have excellent tensile and yield strength, making them an ideal material for home appliances. Hence, cold-rolled steel is one such versatile material with an exceptional surface finish.

Cold-rolled steel in pressure vessels:

Pressure vessels are enclosed containers where the core of any material is placed under extreme pressure. These vessels play a vital role in the petrochemical and nuclear plants. The cold-rolled steel is used in the pressure vessels because of their elongation rate, toughness, embrittlement, and fatigue strength. Hence, because of their exceptional physical properties, cold-rolled steel is used in the pressure vessel to compress the overall pressure produced by the vessel. However, the size and pressure of the vessel differ from country to country, depending on the country’s formal code.

Hence, these are the different applications of cold-rolled steel in various sectors. Bharat Steel – the best JSW steel dealers in Chennai who offer quality steel products at good standards.

Differences Between Seamless And Welded Steel Pipes

February 26, 2022

The steel pipes play a vital role in transmitting oils, gases, and water in various industries. These are cylindrical tubes made from raw steel materials undergoing various transformation processes. Have you heard of seamless and welded pipes? Pipe welding or welded pipes is where the two pipes are joined by using the welding techniques. The seamless pipes are single hollow pipes in the middle and do not have visible welded marks or lines, unlike welded pipes. However, it becomes a debate while choosing the welded and seamless pipes. Many steel dealers in Chennai suggest selecting the pipes depending on the purpose and requirements of the project. The differences between seamless and welded steel pipes are based on production methods, cost, resistance, and related factors. Hence, in this post, let us briefly see different techniques that vary them.

Production method:

The foremost difference between the seamless and welded pipes is the production method. The seamless pipes get that smooth finish by undergoing an extrusion process. The raw casted steel billets are placed inside the heating chamber at a high temperature, offering a sufficiently strong force with the piercing machine to create a hollow. However, various casting methods are employed to produce seamline pipes with perfect smooth consistency outside.

In the welded pipes or Electronic Resistance Welding method (ERW), the steel sheets are rolled continuously till the cylindrical shape is achieved. However, an electric current is passed at the end of the pipes, which melts and combines them. The ERW method is used for welding MS chequered plate, sheets, and strips for commercial and industrial purposes.

Hardness:

Another significant difference between the seamless and welded pipes is the strength or hardness. Pipes are used majorly for transmitting fluids and gases. In the case of fluid transmission like water, the pipes should be able to handle the pressure of the water. If the tube is used for units like air conditioning, it should be prone to different temperatures.

The welded are less prone to varying temperature and high pressure. The welded lines on the pipes can detach the pipes from one another under varying environmental conditions. Due to the absence of welded seams in the seamless pipes, the pressure is evenly distributed even at different temperatures, making them ideal for transmission.

Rust-resistance:

Thirdly, manufacturers can provide rust or corrosion resistance to the metals through the galvanization process. The metal, for example, a SAIL TMT bar, must be hot-dipped in a bath filled with molten zinc. So, after removing them from the bath, the zinc reacts with the metal and forms a layer that is resistant to corrosion.

The galvanization for the welded pipes does not stay longer due to chemical and environmental factors. The welded joints react with the zinc and lead to deposits that can eventually lower the quality of the material. In the case of seamless pipes, the zinc coating adheres well with the surface of the metal due to the lack of welded joints and extrusion process.

Hence, these significant differences differentiate welded and seamless pipes. However, choosing the appropriate pipe depends entirely on the project’s purpose. Bharat steel is the best JSW steel dealers in Chennai and provides quality steel pipes used extensively for all transmission purposes.

Why Should One Choose Steel Pipes Over Ductile Iron Pipes?

January 5, 2022

Have you ever heard of ductile iron pipes? If not, here is a short description of the iron pipes. Ductile iron is a metal made from crude iron where the iron ore is smelted in a blast furnace to obtain the product. It has high carbon content and stable chemical properties. You may think, why is it called ductile iron? The graphite in the ductile iron has round nodules which suppress the cracks and enhance its ductile property. On the other hand, steel pipes are made from steel ore and undergo a process of molding and welding to meet the requirements. These are the most utilized products by manufacturers and steel suppliers in Chennai. The tubular sections in the steel have high strength naturally, which withstand the longitudinal stress and the bending forces.

However, the ductile iron and steel pipes may look similar at first glance. But they do have differences that make the steel pipes stand out. Hence, in this post, let us see why one should choose steel pipes over ductile iron pipes.

Carbon content:

The foremost difference between ductile pipes and steel pipes is the carbon content. The carbon content can be a blessing and curse at the same time because the higher the carbon content, the more the metal has hardness and strength. But at the same time, the product is subjected to brittleness and weldability. So, in the case of ductile iron pipes, they have a carbon content of around 3.0%-3.9%, whereas the iron pipes have carbon content ranging from 0.8% to 0.60%. However, JSW steel dealers in Chennai prefer steel pipes, even though they have less carbon content, they are not brittle and weldable.

Tensile strength:

Another prime difference between ductile iron and steel pipes is tensile and yield strength. The tensile strength defines the maximum load a metal can withstand while undergoing external pressure without being fractured or cracked. The tensile strength of the ductile iron ranges from 42,000 psi to 80,000 psi. But the tensile strength of the steel pipe is around 60,000 psi to 100,000 psi. Not only pipes, but even steel SAIL TMT bar also have tensile above 100,000 psi.

Yield strength:

Thirdly, ductile iron and steel pipe differ based on yield strength. The yield strength refers to the level of stress. It means by the time the metal reaches the saturation point or a level the metal would have undergone a deformation. The yield strength of the ductile iron is lesser or equal to 350 MPa, whereas for the steel pipes, it is around 290 MPa – 550 MPa. All the steel products have good yield strength, for example, the MS chequered plate has a good yield strength of around 540MPa.

Hence, these are the major differences between ductile iron and steel pipes. Even though they look alike, it is always to choose the appropriate one depending upon your project and application. Therefore, approach Bharat Steel, the best steel suppliers in Chennai, for quality steel products.

Different Types Of Pipe Testing Methods

December 30, 2021

Steel pipes are one of the most important construction materials used in many many modern construction sectors and high-stress environments to withstand external factors. Hence, these steel pipes are used right from plumbing systems to structural applications. However, many manufacturers and steel suppliers in Chennai conduct various pipe testing to make them fit for the intended use. Thus, steel pipes that reach us undergo different testing methods that are classified into destructive and non-destructive testing. The non-destructive testing includes techniques that do not damage the specimen. In destructive testing, the specimen is subjected to pressure to measure its performance and failure. Hence, every pipe that we see and use for our purpose either undergo destructive or non-destructive testing. Therefore, in this post, let us see the different types of pipe testing methods used by many industry manufacturers.

Hydrostatic Testing:

This type of testing is made for the transmission of fluid at a certain pressure. The hydrostatic testing is applied to the steel pipes to determine the risk associated with the steel pipes. The term risk refers to the breakage or cracks during the fluid transmission process. Generally, the hydrostatic test is conducted by shutting down the pipelines and required repairs are made to streamline the process. So, hydrostatic testing is carried out by vacuuming the air present in the tube and filling them with water. Then the steel pipe is subjected to pressure which is 1.5 times its pressure limit.

Thus, visual examinations are carried out by the inspectors where some use tracers or fluorescent dye to check the leakage or cracks. This condition is maintained for several hours to see the capacity of the pipes under excess pressure. The JSW steel dealers in Chennai provide such well-tested pipes to serve the purpose significantly.

Magnetic Particle Inspection:

The magnetic particle inspection is non-destructive testing where it is used to detect any linear flaws. This method is used to identify surface breakage, poorly-welded joints, cold laps, pores, and many more. Hence, this testing involves elements like yoke magnet, magnetic ink, and removable white paint. So, a particular area is magnetized by adding ink, paint, and magnet and then allowed to dry. Thus, if there is any surface defect, a certain area will deform over time. Hence, this method is able to identify any damage in the SAIL TMT bar also by following the same process.

Charpy Impact Test:

The Charpy impact test is a classification under destructive testing. This method is used to measure the toughness of the steel pipe. The Charpy impact test is made on the pipes that are joined together. In the test, a weighted pendulum is hung from a certain height of the steel pipe. It shows the impact of the material absorbed by the specimen. Hence, this testing determines the quality and strength of the steel pipes.

Therefore, these are the different types of pipe testing that determine the physical properties and stability of the material. You can even buy the best steel pipes from Bharat steel- the best steel dealers in Chennai for quality materials.

Common Types Of Steel Pipe Coating

December 9, 2021

Pipelines are the essential components in the industry and home as well. These pipelines transmit water, natural gas, sewage systems, and many more for refineries, factories, and homes. Thus, steel pipes play a vital role in transmitting the essentials. However, for a steel pipe to last longer, you need to coat the pipe to prevent corrosion and damage. The steel suppliers use various types of coating in the form of liquids, gases, or solids. These coatings are applied on the topmost layer of the pipe to resist cracks and damage. Steel pipes can last for 100 years, but they need to be maintained as long as the fluid inside touches the pipe’s lining. Hence, nowadays, industries use two types of techniques, namely pipelining and pipe coating. The primary aim of these methods is to prevent direct contact of the pipe with the fluid inside. Hence, in this post, let us see the common types of a steel pipe coating to withstand external and internal factors.

High-Performance Powder Coating (HPPC):

The commonly used coating by many industries is the High-performance powder coating (HPPC). The HPPC coating is a combination of polymer resins. The resins are composed of flow modifiers, colorants, additives, and many more. The steel suppliers in Chennai use HPPC coating for the pipes that are used in extreme environmental conditions. It is the reason why you see HPPC coating pipes in the metal refineries and oil and gas pipelines. The HPPC coating contains a compound polyethylene that acts as a protection layer for pipes during transport and underground projects. The polyethylene component in HPPC coating is the best in maintaining the quality of the pipes despite being exposed to chemicals and soils. Thus, HPPC coating is suitable for pipes with diameters from 14 inches to 42 inches. Hence, these coatings are not suitable for construction pipes because of their smaller circumferences.

High-Density Two Layer Polyethylene Coating (HDTLPC):

The high-density two-layer polyethylene coating is the combination of powder and adhesive layers. This coating also consists of polyethylene content similar to HPPC coating. The HDTLPC is the topmost coat given to the multi-layered system. In regular two-layer and powder coating, they have poor resistance, peel-off easily and are suitable for a low-temperature surrounding. Thus, HDTLPC was developed mainly to overcome these shortcomings. The HDTLPC coating allows the steel pipes to maintain their physical form and shape even during stacking or storage.

Fusion Bonded Epoxy Powder Coating (FBE):

The FBE coating is suitable for pipes that are smaller in size and diameter. These are resistant to higher temperatures than the HPPC coating. Hence, due to their outstanding resistance to extreme weather conditions they are used in oil and gas refineries. Thus, the FBE coating offers long-term corrosion resistance for the pipelines. Similarly, FBE coating is applied to SAIL TMT bar to prevent the rebar from corrosion.

Therefore, these are the common types of coatings applied to the steel pipes to last long.

The JSW steel dealers in Chennai are the best dealers to purchase the well-coated steel pipes for industrial and residential purposes.