Heat Exchanger Manufacturers in Chennai, India | KRR Heavy Engineering
KRR HEAVY ENGINEERING
If you are evaluating heat exchanger manufacturers in Chennai, India for a critical industrial project, KRR Heavy Engineering delivers purpose-engineered shell & tube systems built for long operating life, stable thermal performance, and smooth approvals across EPC, QA, and plant operations.
Engineered Shell & Tube Heat Exchangers for Process Industries
At KRR Heavy Engineering, every exchanger begins with process understanding — not just fabrication. We design for real-world plant conditions such as fouling, cycling loads, corrosive fluids, flow instability, and shutdown constraints.
Our exchangers are engineered to maintain performance, simplify maintenance, and reduce lifecycle risk.
In-House Thermal & Mechanical Engineering
We support thermal sizing, mechanical design intent, metallurgy selection, nozzle layout, and maintenance access planning. The result is an exchanger that integrates seamlessly into your plant rather than forcing compromises later.
Why KRR Heavy Engineering is Chosen for Critical Heat Transfer Projects
Inspection-Ready Manufacturing
From material traceability to weld mapping and dimensional controls, every exchanger is built with structured inspection in mind — reducing approval delays and minimizing rework during FAT.
Designed for Long-Term Reliability
Our designs address vibration risk, fouling allowance, corrosion margins, gasket compatibility, tube expansion, and cleanability, ensuring stable output well beyond commissioning.
Shell & Tube Heat Exchanger Capabilities
Designs We Supply
Robust configuration for stable services and predictable maintenance schedules.
Removable bundle access for cleaning and inspection flexibility.
Thermal expansion control with simplified tube-side adaptability.
Duty matching with pressure drop and velocity considerations.
Layout-driven orientations with access, lifting, and turnaround planning.
Materials & Construction Options
Carbon steel, alloy steel, stainless steel
Balanced for strength, corrosion, and duty requirements.
Duplex & Super Duplex
For aggressive environments and chloride-rich services.
Corrosion-resistant combinations
Tube-side and shell-side selections tailored to media severity.
Dissimilar metal designs
Tube-sheet and shell combinations where service demands it
Custom nozzles, cladding, lining
Configured for integration, inspection, and plant interfaces.
Key Engineering Factors
Thermal duty stability
Performance that remains predictable under real operating variability.
Pressure drop optimization
Balanced hydraulics to protect equipment upstream and downstream.
Fouling & cleaning strategy
Maintainability built into bundle access and service planning.
Vibration control
Design decisions that reduce risk under flow-induced vibration.
Expansion management
Thermal stresses considered early to avoid late-stage redesign.
Lifting & handling
Bundle removal and turnaround access designed for the site reality.
Heat Exchanger Design, Codes & Engineering – Expert Answers from KRR
At KRR Heavy Engineering, every heat exchanger is engineered for real process conditions, not catalogue sizing. From ASME U-Stamp compliance and TEMA selection to metallurgy, fouling, and lifecycle performance, these FAQs explain how our engineers design and manufacture shell & tube heat exchangers that deliver long-term reliability in the world’s most demanding industrial services.
1) What type of heat exchanger is best for my application (Shell & Tube vs Plate vs Air Cooler)?
At KRR Heavy Engineering, selection is driven by operating pressure, temperature, fouling tendency, corrosion, cleanability, and lifecycle cost. For high-pressure, high-temperature, fouling or corrosive services, we normally recommend Shell & Tube heat exchangers because of their mechanical strength, long life, ease of maintenance, and code compliance. Plate and air-cooled exchangers are used only when compactness or utility constraints justify them.
2) Should I specify ASME U-Stamp for a heat exchanger?
Yes, whenever the exchanger is part of a pressurised process system or governed by statutory regulations, ASME Section VIII compliance with U-Stamp is essential. KRR is an ASME U, U2, S, R and NB authorised manufacturer, allowing us to fabricate heat exchanger shells, channels and pressure parts under full code control, giving customers global regulatory acceptance, insurance compliance and long-term safety.
3) What does TEMA mean, and what is the difference between TEMA C / B / R?
TEMA defines the mechanical design, construction and tolerances for shell & tube heat exchangers.
At KRR we manufacture exchangers in:
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TEMA C – commercial and utility services
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TEMA B – chemical and process industries
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TEMA R – refinery and severe duty services
For oil & gas, hydrogen, petrochemical and continuous duty plants, we normally recommend TEMA R or B, which we build in-house with thick tubesheets, robust baffles and code-qualified welding.
4) What is a TEMA “type” like BEM / AEL / BEU—and which one should I choose?
The TEMA type defines front head, shell and rear head construction, which controls thermal expansion, cleaning access and maintenance strategy.
KRR engineers select the TEMA type based on:
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thermal stress and temperature cross
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requirement for bundle removal
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mechanical cleaning needs
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future maintenance strategy
We do not use a standard template — each exchanger is engineered-to-order for its duty.
5) What process data do you need to design/quote a heat exchanger correctly?
KRR designs strictly from a process datasheet including:
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fluid properties, flow rates, inlet/outlet temperatures
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operating & design pressure and temperature
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allowable pressure drop
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fouling factors and phase change
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corrosion and metallurgy requirements
Using this, we perform thermal verification, mechanical design and TEMA compliance before releasing drawings or price.
6) How do you ensure thermal performance (duty) is achieved after manufacturing?
KRR ensures duty through:
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validated thermal design review
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tube count, layout, baffle spacing and pass arrangement optimization
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pressure drop verification
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dimensional and fabrication inspections
Every exchanger is built to deliver the guaranteed heat duty at specified pressure drop, not just theoretical sizing.
7) How do you select materials (CS / SS316 / Duplex / Titanium), and what about corrosion allowance?
Material selection at KRR is based on process chemistry, chlorides, temperature, erosion risk and cleaning media.
We routinely manufacture exchangers in carbon steel, SS316L, Duplex, Super Duplex, Titanium, Hastelloy and nickel alloys, including clad and overlay tubesheets.
Corrosion allowance and material life are engineered to meet plant life expectations, not just minimum code.
8) What are the standard inspections and tests for an ASME/TEMA exchanger?
KRR follows a project-specific QAP and ITP, including:
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raw material MTC & PMI
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NDT (RT, UT, PT, MT) as per code
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tube expansion / welding inspection
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hydrostatic or pneumatic pressure testing
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dimensional and visual inspection
For export and EPC projects, TÜV, BV, Lloyd’s, DNV, SGS or client inspectors are regularly involved.
9) What is the typical manufacturing lead time—and what drives it?
Lead time depends on:
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metallurgy (carbon steel vs exotic alloys)
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TEMA class and thickness
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tubesheet forgings and special components
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inspection and certification scope
With in-house presses, CNC cutting, machining and fabrication, KRR controls the critical path and delivers faster than most overseas manufacturers.
10) What documentation will I receive with the heat exchanger?
Every KRR heat exchanger is supplied with a complete manufacturing dossier, including:
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GA drawings and nozzle orientation
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material test certificates
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welding and NDT records
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hydrotest certificates
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QAP / ITP
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ASME forms (for code equipment)
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packing and installation guidelines
This ensures traceability, audit readiness and lifetime regulatory compliance.