Skilled and reliable heat exchanger manufacturer in India for different industries

Stalwart International’s experienced team designs the heat exchangers as per International standards like TEMA. It stands among the best heat exchanger manufacturers in India.


Shell and tube heat exchanger manufacturers in India

Fluids are essential for industrial applications as they help prepare the final products from raw materials. These raw materials are added to a heat exchanger under optimum temperature and pressure.


As one of the best heat exchanger manufacturers in India, we at Stalwart International manufacture the best quality heat exchangers to mix the liquids properly and regulate the temperature at the respective levels.


We have emerged as one of the best heat exchanger manufacturing companies with our multipurpose equipment catering to various processes, including the dissolution of solids, crystallization, polymerization, liquid extraction, product mixing, and distillation.


Install the best heat exchanger from Stalwart International

Stalwart International manufactures all equipment keeping in mind the industrial standards. Our company is one of the best heat exchanger manufacturers in India. All our heat exchangers comply with the prestigious ASME section VIII Div. I. & AD. Merkblatter compliance.


Stalwart's Shell and tube heat exchangers are exceptionally compact, making them an ideal choice for high-pressure systems that require a transfer of heat at high temperatures. These heat exchangers are primarily used in industrial processes and are available in a variety of lengths and diameters to suit various applications.


Stalwart employs the most advanced manufacturing technology to ensure these heat exchangers are designed and engineered specifically for each application. After completion, rigorous quality checks are carried out to meet the requirements of the ASME code.


Stalwart's Shell and tube heat exchangers are particularly suitable for use in high-pressure applications where pressures can exceed 30 bar and temperatures can reach over 260 °C.


Among the renowned stainless steel heat exchanger manufacturing companies in India, Stalwart International ensures to manufacture the heat exchangers according to the client’s process requirements.


Stalwart International offers an alternative to conventional heat exchangers with their corrugated tube heat exchangers. These innovative designs promote higher levels of heat transfer by inducing greater turbulence within the tubes, resulting in a reduction of heat transfer area requirements by up to 50% and ultimately lowering capital investment. Corrugated tube heat exchangers are at the forefront of the industry, delivering a range of flow patterns inside the tubes and optimizing turbulence for maximum efficiency.


Install the best heat exchanger from Stalwart International

  • Strong project management skills.
  • On-time delivery with an exceptional record of 100%.
  • Manufacturing a wide range of Heat Exchangers.
  • An agile and flexible team with strong in-house engineering capabilities.
  • All machinery available in-house so we can meet very tight customer deadlines.

Why Choose Stalwart International


500+ successful projects completed
Employee strength of 200+
43+ years of experience
ASME 'U' Stamp, 'R' stamp, 'CE' & 'ISO' Certified.
Worked in 14 countries across 4 continents
Manufacturing / Turnkey / Designing / Commissioning.

Salient features of heat exchangers


  • Versatile heat exchanger product range for various industries.
  • High-quality design and construction with increased efficiency and durability.
  • Leakage-proof design manufactured with advanced technologies.
  • Availability of custom designs based on applications and specific process requirements.
  • A team of skilled and expert manufacturers with more than 30 years of experience.
  • Scheduled quality assurance testing for every heat exchanger manufactured to ensure the products function properly and meet the client's expectations.
  • Equipment manufactured to meet a range of temperatures and pressure based on various industry requirements.
  • 100% user satisfaction guaranteed on new heat exchangers and replaced or repaired products.


A heat exchanger is a device used to transfer heat between a source and a working fluid that are at different temperatures. These exchangers are used in both cooling and heating processes.

Yes, as one of the best heat exchanger manufacturers in India, we also manufacture custom design heat exchangers for our customers based on their process requirements.

We provide a 12 months warranty on our products for any manufacturing defects.

We manufacture two heat exchanger types – corrugated and shell and tube heat exchangers. The shell and tube exchangers are most commonly used in oil refineries, food processing units, and other industries. The corrugated heat exchangers are primarily used in areas where small tubes are needed for single-phase fluid flow.

At Stalwart International, we manufacture heat exchangers that meet specific application requirements. We have manufactured heat exchangers that are used in high-pressure applications, greater than 30 bar and temperatures greater than 260 °C.

We conduct stringent quality assurance testing on every corrugated, shell, and tube heat exchanger we have manufactured. Therefore, you won’t have to worry about the performance and quality of our heat exchangers.

Heat exchangers are manufactured to be durable and long-lasting, despite the subjected pressure and temperature. But when the exchangers fail to operate properly or do not maintain the temperature at optimal levels, they need to be replaced because repairing the damage often does not make the exchangers functional. If your heat exchanger needs replacement, you can connect with us to take the discussion further.

Heat exchangers require replacement under the following conditions:


  • Utility bills are rising (i.e more power consumption).
  • Increasing frequency of repair and maintenance in the last couple of years.
  • Poor heat transfer rates.

Yes, heat exchangers need frequent and scheduled servicing to ensure efficient heat transfer is achieved. Besides this, servicing also reduces the overall budget due to increased longevity.

You need to follow the application requirements and specifications to decide which heat exchanger you need for your project purpose. Pls contact us and we can guide you on the same.

The frequency at which a heat exchanger needs to be cleaned highly depends on the fluids mixed, the temperatures it is subjected to, and the residue deposition.

Yes, we export heat exchangers to various countries because all our products comply with global industry standards.

Yes, Stalwart International is proficient in re-tubing the heat exchangers of both shell and tube and corrugated types.



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Corrugated heat exchanger


Corrugated heat exchangers usually have helical patterns indented along the entire length of the tube. These patterns help increase the flow turbulence along the tube surface near the periphery while reducing the overall boundary layer.


As a result, the wall resistance reduces significantly to increase the heat transfer coefficient of the fluid flowing inside the exchanger tube. A corrugated heat exchanger usually has a higher Nusselt number but the same Reynolds number. These tubes are often used in single-phase liquid flow because double-phase flows are not yet used in corrugated tubes.



Shell and tube heat exchanger


The most common type of heat exchanger is the shell and tube with a cylindrical shell with numerous tubes inside. It is often used in high-pressure applications where the liquid needs to flow at a huge pressure through the coils inside. The heat exchanger allows single- and double-phase liquid flows along with different arrangements like parallel or counter flows.


A typical shell and tube heat exchanger comprises the front header from where the fluid enters and the rear header through which the fluid leaves. One fluid runs through the tubes, and another fluid flows over the tubes (through the shell) to transfer heat between the two fluids.


The tube bundle is the total collection of different baffles, tube sheets, and tubes. The shell is the outermost portion that covers all the tube elements in the bundle and provides appropriate protection.



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