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144188195215245280

Kharis Infra Pvt Ltd

Mumbai, Maharashtra

| GST  27AAFCK8763N1ZQ

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Kharis Infra Pvt Ltd - Service Provider of vessels and column maintenance service, piping and fabrication service & heat exchangers maintenance service in Mumbai, Maharashtra....Read More

Vessels And Column Maintenance Service
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Piping And Fabrication Service
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Heat Exchangers Maintenance Service
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Most importantly, they support the tubes in the proper position during assembly and operation and prevent vibration of the tubes caused by flow-induced eddies, and secondly, they guide the shell-side flow back and forth across the tube field, increasing the velocity and the heat transfer coefficient.

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Importance Of Re-Tubing
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Importance Of Re-Tubing

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  1. Leakages thro tube and tube to tube sheet joints in heat exchangers in fertilizer, refineries and petrochemical plants particularly in corrosive service are serious cause of concern for reliability of static equipment. Unlike rotary equipment it is not common to have spare heat exchangers and hence heat exchangers are normally classified as single line equipment whose down time can lead to serious production losses
  2. heat exchangers are normally over designed & leaking tubes can be plugged to the extent of 10 % normally . Any loss of tubes beyond this limit needs major repair/replacement.
  3. it is common to keep spare tube bundle (only for floating head exchangers) particularly in corrosive service but for fixed exchangers, keeping spare exchangers is not an economic option, where insitu-re-tubing on fast mode is the best choice during short term or long term shutdown.
  4. in such cases re-tubing becomes an optimum solution. Since the cost of other major components like shell, channel cover, dome, tube sheet etc (which normally do not need replacement) is substantial (40-60%) when compared to tubes, it is prudent to change tubes only rather than replacing the whole heat exchanger.

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Worldwide and commonly accepted and used basic heat exchanger configuration in process industries is the shell and tube heat exchanger. The shell and tube heat exchanger provides a comparatively large ratio of heat transfer area to volume and weight. . The shell and tube exchanger can be reasonably easily cleaned, and those components most subject to failure - gaskets and tubes – can be easily replaced.

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Tubes

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This is the elementary part. Made of copper alloy, carbon steel, stainless steel, Inconel, nickel, Hastelloy and Titanium are the care full choices for strong corrosion resistance and thermally conductive result.

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Tube Sheets

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The tube sheet, in addition to its mechanical requirements, must withstand corrosive attack by both fluids in the heat exchanger and must be electrochemically compatible with the tube and all tube-side material. Tube sheets are sometimes made from low carbon steel with a thin layer of corrosion-resisting alloy.

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Pass Divider

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A pass divider is needed in one channel or bonnet for an exchanger having two tube-side passes, and they are needed in either channels or bonnets for an exchanger having more than two passes.

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Fabrication

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Presently we have begun the job of fabrication. Further, we have a handful of highly efficient and skilled fabricators and welders, who can undertake any kind of fabrication in pressure vessels, storage tanks and columns.
The spool pipe fabrication on Stainless Steel Duplex and Super Duplex of different dimensions are being carried out at QICL Fujairah UAE.

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The shell is simply the container for the shell-side fluid, and the nozzles are the inlet and exit ports. The shell normally has a circular cross section and is commonly made by rolling a metal plate of the appropriate dimensions into a cylinder and welding the longitudinal joint ("rolled shells"). Small diameter shells (up to around 24 inches in diameter) can be made by cutting pipe of the desired diameter to the correct length ("pipe shells").

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Tube-side channels and nozzles simply control the flow of the tube-side fluid into and out of the tubes of the exchanger. Since the tube-side fluid is generally the more corrosive, these channels and nozzles will often be made out of alloy materials (compatible with the tubes and tube sheets, of course). They may be clad instead of solid alloy.

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Channel Covers

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The channel covers are round plates that bolt to the channel flanges and can be removed for tube inspection without disturbing the tube-side piping. In smaller heat exchangers, bonnets with flanged nozzles or threaded connections for the tube-side piping are often used instead of channels and channel covers.

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Tpi Co-Ordination

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Kharis Infra possess the required liaison experts who are traditionally in to it. Our liaison with any TPI will be timely and excellent.

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Our Commitment

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We will truly be grateful for every opportunity from your esteemed end which would certainly help us to venture fruitfully for your enduring satisfaction.

Here we request you to be kind enough to respond to our assiduous appeal by serving us enquiries on any re-tubing or fabrication jobs at the earliest possible time.

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Kharis Infra Pvt Ltd - Service Provider of vessels and column maintenance service, piping and fabrication service & heat exchangers maintenance service in Mumbai, Maharashtra....Read More

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27AAFCK8763N1ZQ
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Kharis Infra Pvt LtdA-7, Ground Floor, Sahakarwadi, Opp Virvani Industrial Estate Near Synthofine Estate Goregaon, Virvani Industrial Estate,
Mumbai-400063, Maharashtra, India

Sujin Abraham (Manager)

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