Heat exchangers – engineered for performance and reliability

With more than 50 years of expertise, SOLE is a trusted manufacturer of high-quality stainless steel heat exchangers, producing over 70,000 units annually using tubes from our own mill.

Our exchangers are engineered to meet strict industry standards for safety, durability, and thermal efficiency. Whether for domestic hot water systems or industrial installations, we offer fully customizable solutions—including continuous tubes up to 49 meters in length—for unmatched flexibility and performance.

Applications

SOLE heat exchangers are designed for demanding environments and mission-critical operations.

Typical applications include:

Domestic and industrial hot water heating
Used in indirect water heaters for both household and industrial use. Compatible with multiple energy sources, including district heating, boilers, heat pumps, and solar thermal systems.
Cooling in oil & gas installations
Custom-engineered for pump and motor cooling in subsea systems and offshore platforms.
Marine and aquaculture applications
Reliable heating and cooling of water, oil, and process fluids – built for harsh, remote, and corrosive environments.

Key Specifications

Welded tube lengths: up to 49 meters
Maximum tube length: 49 meters
Materials: LDX 2101, AISI 304L, AISI 316L, Duplex grades and other high-performance alloys
Production method: Continuous, seamless tubing – e.g. coils with a total tube length of up to 49 meters.

Advantages

Flexible energy source compatibility
Heat exchangers enable the use of a wide range of energy sources.

Custom coils to match your spec
We design and manufacture tailor-made coils based on your requirements – even for complex or space-restricted designs.

Sustainability built-in
Made from up to 95% recycled stainless steel and manufactured using 100% green energy – combining environmental responsibility with industrial strength.

Proven reliability
Installed in hundreds of thousands of water heaters across Europe, our exchangers are trusted by leading OEMs for performance, durability, and consistency.

Problem

How to cool off a pump engine on the bottom of the ocean? The IKM Group is a multidiscipline sub supplier to the oil and gas industry. They faced a challenge with overheating of a subsea pump engine. IKM figured a tube coil could be a potential solution.

Solution

Sole was assigned to the task, and within 2 weeks we came up with a solution. With the knowledge and technology of the water heating industry in mind, we crafted a custom made tube coil. Specially designed to withstand challenging environments.