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Bharat Steels

Tag: Steel pipe coating

Different Types Of Pipe Testing Methods

December 30, 2021
Pipe Testing Methods

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.

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Common Types Of Steel Pipe Coating

December 9, 2021
Various Applications Of Steel Tubes

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.

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