What Are the Factors Affecting the Quality of Seamless Pipes?
By adminJan 18,2021
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Seamless pipes are long steel pipes that are hollow in the center. These pipes are widely used as construction material and there is a fairly high demand for them. Seamless pipes offer a continuous, smooth surface with no joints on the periphery. Spurred by the growing demand for seamless pipes, you will find a variety of these pipes in the market. However, finding the highest-quality mechanical tubes is not an easy task. Several factors affect the quality of seamless pipes. Here is a look:
What are the Applications of Finned Tubes in Industries?
By adminApr 15,2019
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Finned tubes are a series of tubes which have fins attached on its exteriors. This increases the contact area with the fluid which is outside the tube. This extended outer area augments the heat transfer rate. It also exchanges heat between the outside and inside the tube.
Inside of the tube is for the liquid to flow and the outside has air or some other gas. The main components of heat exchangers in any industry are Finned Tubes. Usually, crossflow happens here and this is due to the radial fins. If you want a counter-flow, use longitudinal fins instead.
In most of the cases, there is an open heat exchanger with the application of finned tubes for air flow. However, internal finned tubes can also be used in a closed heat exchanger.
Finned tubes are made by helically twisting strips on the tubes. They can be longitudinal, transverse, parallel, flat, round, oval, etc. For industrial purposes where the outside flow has to streamline with the tube length, the best finned tube is the one with longitudinal fins. On the other hand, for air coolers, crossflow exchangers, gas flows, shell and tube heat exchangers, or turbulent flows, you can use transverse finned tubes.
High-finned tubes are used to heat and cool down gases in heating, machinery, and plant technologies.
For evaporating and condensing refrigerants or when you have to control the temperature of liquids and gases, you can use low finned tubes. Then there are safety tubes which are also known as double-wall tubes. They have particular leakage paths to separate fluids.
Tubes applicable in oil coolers, condensers, water heaters, etc., are medium-high finned tubes. For specific applications with the best designs, stainless steel finned tubes can be used.
Other Application of Finned Tubes
Finned tubes are used to relay heat in any industry where hot fluid has to be transferred to cold fluid through a proper medium. They expand the exterior of the tube. Finned tubes have the capacity to take the place of bare tubes with reduced volume and cost.
One of the significant feature of finned tubes is to secure the surface area of heat exchanger tubes. Heat transfer is based on the outside area to which the fluid is exposed, temperature difference between the fluids, and the heat transfer between the tube and fluids.
Application of Finned Tubed in Industries
Petroleum Industry
Chemical industry
Wood industry
Food industry
Steel Industry
Plastic molding industry
Glycol dehydration units
Coils for hybrid cooling towers
Printing Machines
Production of surface coatings
Solvent recovery
Cooling of turbine air intakes
Textile production
Greenhouse heaters and breeding
Tanneries
Anti-freeze coils for process air
Paper works
Finned tubes heat exchangers can be applied in various household as well as industrial machineries. Car radiator also used finned tube heat exchangers which cools the hot water in the tubes when air passes through it. This is a crossflow process.
For industrial purposes, finned tube heat exchangers are generally used to heat or cool the air and other gases. Finned tubes have fins attached to its exterior areas. Hence, with the increase in the outside area, the heat transfer rate also increases. Moreover, in the long run, it abbreviates the overall equipment size.
If you are looking to purchase finned tubes for any of the above mentioned industrial applications, call us on +91-9099996851. Being one of the leading finned tubes manufacturers in India, we can help you get products as per your requirements. We also supply seamless tubes made of carbon steel and alloys.
Seamless Tubes – Facts, Manufacturing Process & Industrial Uses
By adminMar 12,2019
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Pipes or tubes without a seam or a weld-joint are known as seamless pipes/tubes. These pipes are solid metal tubes having a uniform structure and strength all over with no joints. Ideally, each end of the tube is connected to another without any joint. This increases the ability to withstand higher temperature, pressure, mechanical stress, and corrosive atmosphere.
Seamless tubes or pipes are usually made from solid round steel bars of metals such as carbon steel, tungsten, stainless steel, or molybdenum. To convert it into a hollow tube, the metal piece is heated and rolled over a form.
Some Facts About Seamless Tubes
A seamless tube is thrust out and drawn from a small bar of metal
A seamless tube is short in length as compared to a welded tube
A seamless tube is more expensive than a welded tube
A seamless tube presents a higher range of safety measures
A seamless tube provides high corrosion resistance
A seamless tube has a homogenous structure
Industrial Use
Seamless tubes are widely used in areas such as refinery, petrochemical, fertilizer, power, chemical, automotive, etc. These tubes are considered to be more reliable and strong as they do not have any joints or welds. Seamless carbon steel tubes are also made in straight units of single or double unsystematic or fixed lengths.
The ability to withstand pressure allows these pipes to be used at various processes. High-pressure equipment, heat exchanger tubes, steam release pipes, cryogenic pressure vessels, air cooler tubes, air preheaters, steam trap piping, etc. all use seamless tubes.
Manufacturing Process
Anand Seamless Tubes is one of India’s leading manufacturers and exporters of different types of Cold-Drawn Carbon Steel and Alloy Steel Seamless Tubes. It has been accredited and approved with numerous national and international entities.
For Seamless Tubes, Anand Seamless Ltd uses the Drawn on Mandrel Method, also known as the Cold Drawn Process, which usually takes care of the smooth interior and exterior finish as well as the dimensional tolerance.
In this process, a rotary furnace is used to heat a steel billet at very high temperature fabricating a cylindrical void. With extended help, outside diameter and thickness are attained.
Based on client specifications and requirements, the tubes are stress relieved, normalized, and tempered. Further, multiple roll straightening equipment are used to acquire accurate straightness in tubes. In other words, Seamless Pipes are created by shaping metal to the desired length.
Highest quality levels are maintained at Anand Seamless Ltd. No product reaches moves out without rigorous quality checks. Export sections are packaged with special 4-layer packaging to ensure the products reach their destination intact.
The oil and gas industry in India is among the top 8 industries that practically influences all the major decision of the county. To make the industry run efficiently, there are many plant owners who use different kinds of materials but particularly one stands out from it, and it is the Finned Tubes.
The extruded finned tubes are quite popular with the oil and gas industries, around the world. With its great characteristic to transfer heat to the cold fluids from the hot ones, makes them a proper medium that can handle transfers at great length. They act as a great heat exchanger when one of the transfer variables is gas or air. Normally, the extruded finned tubes have a crossflow which is quite similar to the counterflow.
Another prominent factor that makes the plant managers choose extruded fin tubes is that the fins can actually provide a highly efficient surface area for a heat exchanger tubing. It can also be used as a great heat transfer coefficient, which means that the outside of the tubes are less hot than the insides, letting people work easily around the tubes.
Kinds of Transfers That An Extruded Finned Tube Can Easily Perform
Transfer from vapour to gas
Transfer from liquid to gas
Transfer of thermal fluid to air
The heat transfer depends upon three major factors that include:
The surface area to which a fluid is exposed to
Temperature difference of two fluids involved in the process
Heat exchanger coefficient between the fluids and the tube
Applications of Extruded Finned Tubes:
Coils for hybrid cooling towers
Printing machines
Chemical industry
Solvent recovery
Production of surface coatings
Wood industry
Cooling of turbine air intakes
Greenhouses and breeding
Plastic moulding industry
Anti-freeze coils for process air
Textile production
Food industry
Paper works
Tanneries
Other than this, extruded finned tubes have other major benefits that make it different from other heat exchangers.
Major Benefits of Extruded Finned Tubes
1. Fast Heat Transfer Rate
Finned tubes come along with the tubes, attached to its exterior. This helps the fluids to have additional heat transfer surface area with an increase in the heat transfer rate. This situation will allow a cross flow, due to which the fins play the most important role in this heat exchanger unit.
2. Bigger Outside Surface Area
This can be greatly useful for gas or fluids where fewer tubes are required for the process. This happens as the extruded finned tubes increase the outside surface area letting the tubes work more efficiently. This will help reduce the overall plant and equipment size. This can be greatly beneficial in the long run.
3. Better Heat Transfer Coefficient
With the normal tubes, the fluid that has the lowest heat transfer dictates the complete process of heat transfer and also decides the rate. With extruded finned tubes, this is not the case. It provides a bigger and better surface area due to which it reduces the workload as well as the wastage of money.
Get Superior Quality Extruded Finned Tubes with Anand Seamless Ltd!
Anand Seamless Ltd is one of the leading finned tubes manufacturers in India. With many years of experience in producing quality seamless tubes, we have surely made a name with prominent oil and gas companies like Indian Oil, HP, Reliance Industries and more. Call us at +91-9099996851 to talk to one of our representatives, to know more.
