Types

Double Pipe and Hairpin Heat Exchangers: Are They Worth Selling?

Row of stainless steel plate-and-frame heat exchangers in a clean mechanical room

Yes, double pipe and hairpin heat exchangers are absolutely worth selling, especially since their heavy-wall construction and high-pressure capabilities make them highly sought after in the secondary market. Whether they are manufactured from standard carbon steel or high-value alloys like 316 stainless steel and titanium, these specialized units retain significant resale and scrap value. You can easily monetize your surplus or decommissioned equipment by selling directly to Surplus Heat Exchangers for 100% upfront cash, with all freight and rigging handled for you.

What makes double pipe and hairpin heat exchangers valuable on the secondary market?

Double pipe and hairpin heat exchangers are engineered for demanding industrial applications. Unlike standard shell and tube heat exchangers, these units are specifically designed to handle extreme pressures, severe temperature crosses, and significant thermal shocks. Their unique construction—featuring a true counter-current flow design—allows for highly efficient heat transfer in small-duty applications. Because they are built to withstand rigorous operating conditions, they require thick, heavy-duty materials, translating to a massive amount of metal weight across its heat-transfer surface area.

This robust construction makes them incredibly valuable when it comes time to sell. Even if a unit has reached the end of its operational life, the sheer volume of high-grade metal it contains holds substantial intrinsic value. Furthermore, well-maintained units from reputable manufacturers are frequently sought after for refurbishment and reuse. Whether your equipment is destined for a second life in another plant or will be recycled for its raw material, Surplus Heat Exchangers is ready to buy it.

How much are used double pipe and hairpin heat exchangers worth?

The exact value of your used double pipe or hairpin heat exchanger depends on its size, material of construction, operating history, and overall condition. For units that can be refurbished and resold, prices generally range from a significant premium over scrap based on its heat-transfer surface area, depending heavily on the alloys used and the pressure ratings. Hairpin exchangers designed for extreme high-pressure applications command premium prices due to their specialized nature.

If your equipment is severely damaged or heavily fouled, it still holds immense value as scrap metal. Because hairpin and double pipe exchangers utilize heavy-wall pipes and thick tubesheets, their scrap weight is exceptionally high. Current industrial scrap metal rates fluctuate, but generally fall into the following ranges based on the specific alloys present:

When you sell to Surplus Heat Exchangers, we evaluate both the resale potential and the scrap value of your equipment to ensure you receive the highest possible cash offer. We purchase units in any condition, from pristine surplus stock to heavily degraded scrap.

Why do facilities replace or decommission hairpin heat exchangers?

Industrial facilities frequently upgrade, replace, or decommission their heat transfer equipment for a variety of operational reasons. In many cases, a plant may undergo a capacity expansion, rendering their existing small-duty double pipe exchangers insufficient for the new process flow rates. When this happens, perfectly functional equipment is often pulled from service and left to sit in a boneyard, tying up capital.

Another common reason for decommissioning is a change in the process fluid or operating conditions. If a facility switches to a more corrosive chemical process, they may need to replace their carbon steel or 304 stainless steel hairpin exchangers with units constructed from higher-grade alloys like titanium. Additionally, routine maintenance turnarounds often identify units with tube leaks or severe fouling. While these units may no longer be safe for their original application, their heavy-duty shells and remaining intact components still possess significant value. Instead of paying disposal fees, turn these decommissioned assets into immediate capital by selling to Surplus Heat Exchangers.

What are the differences between double pipe and multi-tube hairpin exchangers when selling?

While both double pipe and multi-tube hairpin heat exchangers share a similar U-shaped or straight-tube configuration designed for true counter-current flow, there are distinct differences that impact their secondary market value.

Double Pipe Heat Exchangers: These units consist of a single pipe positioned concentrically inside a larger outer pipe. They are typically used for very small duties but handle incredibly high pressures and severe temperature crosses. Because they use a single, thick-walled inner pipe, they are exceptionally heavy for their size. This massive weight-to-surface-area ratio makes them highly valuable for their scrap metal content, particularly if the inner pipe is made from a premium alloy.

Multi-Tube Hairpin Heat Exchangers: These units feature a shell containing a bundle of multiple smaller tubes, similar to a traditional shell and tube heat exchanger, but bent into a hairpin shape. This design provides a much larger heat transfer surface area within a compact footprint. Multi-tube hairpins are often more valuable on the resale market because they handle larger process duties, making them attractive to a wider range of buyers.

Regardless of whether you have a single double pipe unit or a massive bank of multi-tube hairpin exchangers, Surplus Heat Exchangers is interested in purchasing your equipment.

Which industries use and discard these high-pressure heat exchangers?

Double pipe and hairpin heat exchangers are specialized pieces of equipment primarily utilized in industries requiring robust, high-pressure thermal management. If you operate in one of these sectors, there is a high probability that you have valuable surplus units sitting in your facility.

  • Oil and Gas Refineries: Refineries rely heavily on hairpin exchangers for high-pressure applications, such as compressor intercoolers and severe service heaters.
  • Petrochemical and Chemical Plants: These facilities deal with highly corrosive fluids. Hairpin units constructed from exotic alloys like titanium and high-nickel stainless steels are common here and hold immense scrap value.
  • Polymer Production: The production of polymers involves highly viscous fluids and high-pressure reactions, making the true counter-current flow of double pipe exchangers ideal.
  • Power Generation: Power plants utilize these robust exchangers for specialized cooling and heating duties in high-pressure steam systems.

No matter what industry you operate in, Surplus Heat Exchangers works with facilities nationwide to recover and monetize these heavy-duty assets.

How does the material of construction impact the payout for your surplus unit?

The materials used to construct your double pipe or hairpin heat exchanger are the single most significant factor in determining its value. Because these exchangers are designed for severe service, they frequently incorporate a mix of materials to balance cost, strength, and corrosion resistance.

For example, a common configuration is a heavy-wall carbon steel outer shell paired with inner tubes made from 316 stainless steel, duplex stainless steel, or titanium. In many cases, the inner tubes are equipped with longitudinal fins to increase the heat transfer surface area. These fins are often made from carbon steel, stainless steel, or copper.

When evaluating your equipment, the experts at Surplus Heat Exchangers will look closely at the TEMA designations, the original manufacturer's nameplate, and the specific alloys used. A unit with a carbon steel shell and titanium inner tubes will command a significantly higher price than a unit constructed entirely of carbon steel. We pay top dollar for high-value alloys and ensure you receive a fair, market-based offer for the exact metallurgical composition of your equipment.

What is the easiest way to sell your used hairpin or double pipe heat exchanger?

Selling heavy industrial equipment can often be a complex process involving endless negotiations and logistical nightmares. At Surplus Heat Exchangers, we have streamlined the purchasing process to make it as simple, fast, and profitable for you as possible. We are direct buyers who purchase your assets outright for cash.

Here is how our hassle-free purchasing process works:

  • Step 1: Contact Us. Call 951-403-5738 or email buyers@surplusheatexchangers.com. Provide clear photos of the heat exchanger, especially the manufacturer's nameplate. The nameplate contains critical information such as the brand (e.g., Alfa Laval, GEA, Tranter, Standard Xchange, ITT, SPX/APV, Kelvion, SWEP), materials, pressure ratings, and dimensions.
  • Step 2: Receive a Cash Offer. Our valuation experts will quickly review your information and determine the highest possible value for your equipment. We will present you with a competitive, 100% upfront cash offer.
  • Step 3: Get Paid 100% Upfront. If you accept our offer, we process your payment immediately. You get paid in full before the equipment leaves your facility.
  • Step 4: We Handle All Freight and Rigging. Moving a massive hairpin heat exchanger is no small task. Surplus Heat Exchangers handles 100% of the logistics. We coordinate the rigging, loading, and nationwide freight transportation at no cost to you.

Do not let your decommissioned double pipe and hairpin heat exchangers sit in a scrap yard losing value to rust. Turn your surplus industrial equipment into immediate working capital today. Contact us now at 951-403-5738 or email buyers@surplusheatexchangers.com to get started.

Answers for sellers

Frequently asked questions

Are double pipe and hairpin heat exchangers worth selling?

Yes, they are highly valuable due to their heavy-wall construction and high-pressure capabilities. They retain significant resale and scrap value, especially if made from alloys like titanium or 316 stainless steel.

How much is a used hairpin heat exchanger worth?

Resale values range from a significant premium over scrap based on its heat-transfer surface area, while scrap values depend on the specific metals, ranging from only a baseline commodity rate for carbon steel up to only a baseline commodity rate for titanium.

Who buys used double pipe heat exchangers?

Surplus Heat Exchangers buys used and decommissioned double pipe and hairpin heat exchangers nationwide in any condition. They pay 100% upfront cash and handle all freight and rigging.