Shell & Tube Heat Exchangers
Thermal sizing in HTRI, mechanical checks in PV Elite, fabrication to TEMA and ASME VIII — up to bellows-type units with 400 mm tubesheets.
See specificationsASME U, U2 & R stamped · ISO 9001, 14001, 45001
Heat exchangers, cooling towers and pressure vessels, engineered in India for plants worldwide
United Cooling Systems has designed and fabricated process equipment in Coimbatore since 1989. Our engineers size every unit in HTRI and PV Elite, our two factories build it under ASME code stamps, and our logistics team ships it, export-packed and fully documented, to any port you name.
- Direct from the manufacturer, no trading layer
- Third-party inspection welcome at every stage
- Sea-worthy packing for any destination
- Established
- 1989
- Code stamps
- ASME U · U2 · R · NB
- Shop floor
- 60,000 sq ft
- Works
- Coimbatore, India
Air cooled heat exchanger, ready for dispatch
Our product range
See every product Heat transfer, cooling and static equipment built for energy
Heat exchangers, cooling towers, pressure vessels, columns and skid-mounted packages, engineered with HTRI and PV Elite and fabricated under our own ASME stamps.
Air Cooled Heat Exchangers (Fin Fan Coolers)
Fin fan coolers to API 661, finned on our own extruded and embedded lines and already delivered to ADNOC, PDO Oman and NNPC.
See specifications
Hairpin Heat Exchangers
Single-tube and multi-tube hairpins built as stacked banks, including a set delivered to PDO Oman via Fortune Engineering.
See specifications
Kettle Reboilers
TEMA K-type reboilers serving petrochemical and refinery columns, among them an SS 316L unit supplied to Mathura Refinery.
See specificationsPressure Vessels & Process Equipment
Columns, evaporators, air receivers, storage tanks and vessel packages mounted on skids.
Air Receiver · Storage Tanks & Vessels · Evaporator · Columns & Reactors · Skid Packages
Cooling Towers
Cooling towers built around your heat load
Factory-built FRP towers, large field-erected cells and closed circuit coolers, each one thermally designed for your flow, range and site wet-bulb.
- FRP Counterflow TowersInduced draft, square and rectangular
- FRP Crossflow TowersGravity distribution, easy access
- Round FRP TowersBottle-shaped, compact packaged units
- Pultruded FRP TowersLarge multi-cell for refinery and power
- Timber TowersTreated hardwood, field-erected
- RCC Cooling TowersField-erected, multi-cell, long life
- Forced Draft TowersBase-mounted fans, indoor-friendly
- Closed Circuit TowersProcess fluid in coils, clean loop
- Cooling Tower SparesFills, nozzles, fans and drives
- Retrofit and AMCUpgrades, repairs and annual maintenance
Sectors
Industries that run on our equipment
Refining, oil and gas, petrochemicals, power, fertilizers and industrial gases, across India, the Middle East, Africa, Asia-Pacific, Europe and the Americas.
Oil & Gas
Fin fan coolers, hairpin units, shell and tube exchangers and skid-mounted packages for upstream fields and gas plants operated by NNPC, ADNOC, Kuwait Oil Company and PDO Oman.
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Refineries
Kettle reboilers, stacked shell and tube units and condensers for refiners including IOCL at Panipat and Mathura.
Petrochemical & Chemical
Titanium columns, scrubbers and alloy exchangers built for Indorama, Chemanol, QAPCO and Farabi.
Fertilizers
Coolers that cope with the extreme pressures of ammonia and urea plants, such as the 425 bar booster cooler we supplied to RCF.
Power Generation
Condensers, economisers and coolers for NTPC, Mahagenco, TANGEDCO, KSEB and other utilities, built in two IBR-registered units.
Industrial Gases, Metals & Mining
Coolers, air receivers and vessels supplied to Linde, Air Liquide, Vedanta, Qatar Steel and Ma'aden.
Is your sector missing here?
Where there is pressure to contain or heat to move, we usually have an answer. Share the details of your project.
Speak to an engineer
Services
Support from the first design check to round-the-clock service
One team handles engineering, replacement units, inspection, export logistics and post-commissioning support.
See every service425 bar
Proven hydrostatic testOur highest proven test pressure, achieved on an RCF booster cooler.
Thermal and Mechanical Design
Thermal sizing in HTRI and mechanical design in PV Elite by our 25 engineers, with drawings and datasheets included in every offer.
Reverse Engineering and Replacements
Drop-in replacements for exchangers and vessels of any make, built to match the piping you already have.
Replacement Tube Bundles
Tube bundles made to your drawings or to the old unit's dimensions, their tubesheets drilled in-house on CNC equipment.
Inspection, Testing and Documentation
Hydrostatic tests as high as 425 bar, with an inspector of your choice or agencies such as SGS, TÜV NORD, HSB, Lloyd's Register and Bureau Veritas looking on.
Export Packing and Shipping
Sea-worthy packing and a full set of export documents, with sailings from Chennai, Cochin, Nhava Sheva or Tuticorin to any port in the world.
24/7 After-Sales Support and Site Supervision
Round-the-clock after-sales help, spare parts and supervision of erection and commissioning on site.
Built in Coimbatore, India
60,000 sq ft of shop floor across two factories
Our Coimbatore plants sit at SIDCO (Unit I) and Seerapalayam (Unit II). Together they house CNC machines for drilling, cutting and plate rolling, four finning machines (three extruded, one embedded), a 12 kW laser cutter, a 500-tonne press brake, and a dedicated bay for stainless steel and exotic alloys.
- 20 km to Coimbatore airport; 195 km to Cochin port
- Shells rolled to 85 mm plate and 6 m diameter
- Tubesheet drilling to 400 mm thickness and 3 m diameter
- Fin tubes produced in lengths to 16 m
Why buyers outside India choose us
Buying process equipment from another country only works when the maker is easy to reach, honest about lead times and strict about quality. That is how we have worked for more than three decades.
Designed for the real site
Desert heat, humid coasts, offshore spray or sub-zero winters: ambient, cooling medium and corrosion allowance are set from your site data, not a generic datasheet.
One accountable maker
The engineers who calculate your unit are the ones who answer your questions, so nothing is lost between a sales office and the shop floor.
Codes and approvals in place
ASME U, U2 and R stamps, National Board registration, IBR, EIL enlistment and ISO 9001, 14001 and 45001 cover what most vendor lists ask for.
Export handled end to end
Seaworthy crating, marking, inspection release and the full document pack, shipped from Cochin, Tuticorin, Chennai or Nhava Sheva.
Project references
View every project Recent deliveries to customers around the globe
A selection drawn from our 2026 list of references.
Air-cooledEnd user: ADNOC, UAEADNOC air cooler with Incoloy 825 tube bundles
Supplied via EPC contractor Target to ADNOC. The tube bundles are in Incoloy 825 alloy to withstand corrosive process fluid.
TargetEPC
ADNOCEnd user
Incoloy 825MOC
Air-cooledEnd user: PDO, OmanStainless steel (SS 316L) air coolers for PDO Oman
Fin fan coolers in stainless steel, delivered to Petroleum Development Oman with NOV as the EPC.
NOVEPC
PDO OmanEnd user
SS 316LMOC
Air-cooledEnd user: NNPC, NigeriaNNPC order: forty air-cooled exchanger modules
On behalf of Global Processing Systems, we fabricated 40 ACHE modules in carbon steel destined for the Nigerian National Petroleum Company.
GPSEPC
40Modules
CSMOC
Clients
View our client list Chosen by owners and EPC firms around the world
Owners such as ADNOC, PDO Oman, Kuwait Oil Company, OQ, QAPCO and Ma'aden, plus NNPC, Indian Oil, ONGC and others, use our equipment, frequently ordered through EPCs including Technip Energies, Petrofac, Saipem, Linde and thyssenkrupp.
Shipped from Coimbatore to process plants around the world
Our equipment runs at national oil companies, refiners, fertiliser plants and utilities, often supplied through international EPC contractors. Wherever your site is, we pack, document and ship to the nearest port.
Middle East
ADNOC, Petroleum Development Oman, OQ, Kuwait Oil Company, QAPCO, Ma'aden, Basrah Gas Company
Africa
NNPC through Global Processing Systems, Zueitina Oil and other upstream operators
Asia
India's leading refiners and utilities, PetroVietnam, Indorama Ventures, and winterised coolers for Mongolia
EPC contractors
Technip Energies, thyssenkrupp, Linde, Petrofac, Saipem, Andritz, L&T-Chiyoda and others
Nearest export ports
- Cochin195 km
- Tuticorin351 km
- Chennai510 km
- Nhava Sheva (JNPT)~1,350 km
Resources
Browse all resources Technical notes and our catalogue
Get the 2026 catalogue, or browse hands-on guidance written by our engineering team.
Download
Company Catalogue 2026
One PDF covering our products, factories, certifications, customers and project references.
UNITED COOLING SYSTEMS (P) LTDProcess Equipment Engineered
Since 1989
Since 1989
Seawater-cooled heat exchangers: selecting tube and plate materials for warm, salty water
Titanium, copper-nickel or super duplex? Chloride level, water temperature and flow velocity make the call.
Read the articleSizing fin fan coolers for 50 °C ambient and desert sites
Why the design air temperature drives air cooler cost more than anything else in hot climates worldwide.
Coming soonFixed tubesheet exchangers: when is an expansion bellow required?
Shell-to-tube differential expansion, the loads it puts on tubesheets, and how a bellow relieves them.
Coming soonWinterising air coolers for freezing climates: what it involves
What we learnt designing winterised air coolers for projects in Mongolia.
Coming soonHave a shutdown date or project deadline?
Give us the date your equipment must be on site. We will plan design, fabrication, inspection and shipping backwards from it and tell you honestly if it is achievable.