We Buy Used Double Pipe Heat Exchangers

How double pipe heat exchangers work

A double pipe (hairpin) exchanger carries one fluid in an inner pipe and the second in the annulus between inner and outer pipe, bent into a U or hairpin. The simple, rugged design handles high pressure and dirty fluids well and is easy to add capacity to by stacking sections.

The double pipe heat exchanger is a fundamental yet highly effective thermal management solution designed for demanding industrial environments. Operating on a straightforward principle, it features one fluid flowing through an inner pipe while a second fluid circulates in the annulus space between the inner and outer pipes. These units are typically bent into a U-shape or hairpin configuration, which allows for true counter-current flow and exceptional thermal efficiency. The simple, rugged design of a double pipe heat exchanger makes it exceptionally well-suited for handling high-pressure applications and dirty, fouling fluids that would quickly clog more complex equipment. One of its greatest design strengths is its modularity; plant engineers can easily increase thermal capacity simply by stacking additional hairpin sections in series or parallel. Because of these robust characteristics, double pipe heat exchangers are heavily utilized in small process duties, high-pressure services, and viscous fluid applications. They are frequently found operating reliably in sampling systems, pilot plants, and heavy chemical processing facilities where durability and ease of maintenance are critical to maintaining continuous production without unexpected downtime.

Materials & what drives resale value

Inner and outer pipes are carbon steel, stainless, or alloy; finned inner tubes are common for viscous service.

When evaluating a surplus double pipe heat exchanger for the secondary market, the materials of construction and specific configuration details heavily influence its overall resale demand. These robust units are typically constructed with inner and outer pipes fabricated from standard carbon steel, various grades of stainless steel, or specialized high-nickel alloys designed to withstand highly corrosive environments. In the used equipment market, buyers actively seek out units featuring premium alloy construction due to their extended service life and superior resistance to harsh chemical attacks. Furthermore, configurations that incorporate finned inner tubes are in exceptionally high demand. Finned tubes significantly increase the available heat transfer surface area, making them highly desirable for viscous service applications where thermal efficiency is otherwise difficult to achieve. The total number of hairpin sections also plays a crucial role in determining marketability, as multi-section banks offer greater capacity and flexibility for expanding process lines. By selling your surplus equipment to us, you tap into a network of buyers looking for these exact specifications, ensuring you receive a premium return based on functional utility and metallurgical quality rather than settling for basic material recycling rates.

• Number of hairpin sections
• Pipe material and whether tubes are finned
• Design pressure and temperature
• ASME stamp and documentation
• Overall length and connection size

How to get the best offer on your double pipe heat exchanger

To ensure you receive the highest possible cash offer for your surplus double pipe heat exchanger, providing comprehensive documentation and clear evidence of the unit's condition is absolutely essential. We closely examine the original manufacturer nameplate to verify critical specifications such as the design pressure, temperature ratings, overall length, and connection sizes. If your equipment retains its ASME stamp and original U-1 data reports, its resale value increases significantly, as these documents prove regulatory compliance and structural integrity to future operators. When submitting your equipment for evaluation, please include high-resolution photos showing the entire assembly, including all stacked hairpin sections, return bends, and flanged connections. We also look for completeness; an intact unit with all original mounting brackets and hardware is far more valuable than a partially dismantled system. Documenting the internal condition of the pipes, particularly noting whether the inner tubes are bare or finned, helps us accurately assess the asset. By presenting a well-documented, complete exchanger, you empower our purchasing team to make a highly competitive, top-tier offer based on its true industrial worth.

Removal, rigging & freight

One of the major advantages of dealing with a double pipe heat exchanger is that its compact, modular design makes it relatively straightforward to move compared to massive shell and tube units. However, we understand that managing the removal and transportation of heavy industrial equipment still requires specialized expertise and significant effort. That is why our dedicated logistics team handles the entire process from start to finish, ensuring a seamless experience for your facility. We coordinate all the necessary rigging, secure the appropriate flatbed transportation, and cover all associated freight costs upfront. Because these hairpin sections are often stacked and securely bolted together, our experienced riggers know exactly how to safely lift and transport the assembly without causing damage to the delicate return bends or flanged connections. You will not have to worry about complex shipping arrangements or hidden transportation fees; we manage the heavy lifting so your team can remain focused on core plant operations.

Compact and straightforward to move; pickup and freight are on us.

Common applications

We frequently buy double pipe heat exchangers from: Small process duty, High-pressure service, Viscous/fouling fluids, Sampling & pilot plants.

Do not let your surplus double pipe heat exchanger be destroyed for basic scrap metal. Reselling your equipment preserves its true industrial value and puts significantly more money in your budget. Contact us today or send photos of your unit to receive a fast, competitive cash offer.