Custom Springs for Pipe Hanger Assemblies & Pipe Supports

At Coiling Technologies, we work in partnership with leading pipe support and hanger manufacturers to engineer and manufacture springs to their exact specifications. Our expertise is focused on delivering reliable, high-performance springs for diverse pipe support applications.

Our heavy-duty springs are trusted by the leading pipe hanger manufacturers around the globe. Our springs are utilized in hangers, variable spring supports, and constant support systems. Whether you’re designing new equipment or need replacement springs for existing pipe hangers, Coiling Technologies offers reliable and durable solutions for your needs.

Our Capabilities Include:

  • Custom manufacturing of heavy-duty springs for use in pipe hangers, variable spring supports, and constant load applications.
  • Engineering springs for pipe supports that manage piping system weight and accommodate movement from thermal expansion, vibration, and dynamic loads.
  • Supporting new equipment design and providing replacement springs as needed, working side-by-side with pipe support suppliers.

Materials & Engineering

We offer a wide selection of spring materials designed to meet the demands of extreme environments, corrosive applications, and high-performance requirements. Our material options include:

  • High tensile CrSi (Chrome Silicon) steel, with designs up to 0.922” (23.5 mm) diameter wire. The use of high-strength alloys allows us to reduce overall spring mass, which can mitigate seismic loading and space constraints.
  • Other material options such as stainless steel, nickel alloys, carbon alloys, copper-based, and cobalt alloys to precisely match your technical and environmental needs.
  • For projects requiring larger designs, we offer 5160 and 6150 Chromium steel, available in sizes up to 2.5” (63.5 mm)

Learn more about spring materials.

Finishes & Protection

To maximize durability and performance in harsh environments, we offer a range of coating and finishing options including:

  • Premium powder coating for a tough, corrosion-resistant finish
  • Zinc-rich primers to endure extensive salt spray exposure and enhance longevity

Read more about our powder coating services.

Why Choose Coiling Technologies for Pipe Support Springs?

  • Custom engineering and prototyping to fit unique specifications
  • Robust manufacturing capabilities for demanding industrial and energy projects
  • Ability to match or improve replacement springs for existing assemblies

If your project requires high-performance springs for pipe hangers, supports, or related assemblies, contact Coiling Technologies. We bring design flexibility, material expertise, and coating technology to customers requiring tailored spring solutions.

 

Pipe Hanger and Pipe Support Springs FAQs

What does a pipe hanger spring do in a piping system?

A pipe hanger spring carries the dead weight of a piping run while letting the pipe move as it heats and cools. A rigid rod support resists that movement and pushes the resulting stress back into the pipe, the nozzles, and the connected equipment. A spring deflects instead, supporting the line at operating temperature and at ambient. Coiling Technologies manufactures heavy duty springs for hangers, variable spring supports, and constant support systems, working in partnership with pipe support and hanger manufacturers and building to their drawings, load ratings, and travel requirements.

What is the difference between a variable spring hanger and a constant support hanger?

A variable spring hanger is a coil spring in a housing, so its supporting force changes in direct proportion to deflection. The load it holds in the hot position is not the load it held cold. A constant support hanger pairs a spring with a lever and cam linkage that offsets the spring rate, keeping supporting force nearly constant through the full travel. Variable hangers are less expensive and suit short movements. Constant supports get specified where movement is large, where a line runs at high temperature, or where connected equipment cannot absorb a shift in supported weight.

How does thermal expansion of the piping run set the spring requirement?

Movement at a support point comes from the growth of pipe between anchors, calculated from run length, the coefficient of expansion for the pipe material, and the difference between installed and operating temperature. That calculated movement, not nominal pipe size, sets the travel the spring must accommodate. Published expansion tables put carbon steel at roughly 2.7 inches per 100 feet (about 69 mm per 30 m) at 400 F (204 C), and austenitic stainless closer to 3.8 inches (97 mm) over the same run. A long hot line can therefore demand travel that a short, stiff spring cannot deliver.

How much load variation is acceptable across a spring hanger's travel?

Variability is the change in supporting force divided by the design load. For a variable hanger it works out to the spring rate multiplied by total travel, divided by the operating load. Specifications commonly hold that figure at or under 25 percent, because a larger shift transfers weight onto adjacent supports and into equipment nozzles once the line reaches temperature. Reducing variability means a softer spring with more free length and more travel, which is why hangers sized for long movements grow quickly. When calculated variability still exceeds the allowance, a constant support hanger is the correct answer.

What materials and wire sizes are available for pipe support springs?

Coiling Technologies coils high tensile chrome silicon (CrSi) steel in wire diameters up to 0.922 inches (23.5 mm). Chrome silicon carries a high allowable design stress and holds strength at moderately high temperature, which reduces spring mass for a given load and helps with seismic loading and confined hanger envelopes. For larger designs, 5160 and 6150 chromium steel are available in sizes up to 2.5 inches (63.5 mm). Stainless steel, nickel alloys, carbon alloys, copper based alloys, and cobalt alloys are also available where the service environment rather than the load governs material selection.

Which coatings hold up on hanger springs in outdoor plant service?

Premium powder coating gives a thick, hard film that resists chipping during handling and installation, and it is the usual specification for hanger springs sitting outdoors at a refinery or power plant for decades. Where salt spray exposure is heavy, near coastal units or cooling tower drift, a zinc-rich primer adds sacrificial protection so a scratch through the film does not start undercutting corrosion at the wire surface. Coiling Technologies applies powder coating and shot peen in house, so surface preparation, peening, and coating stay under the same quality management system as coiling and heat treatment.

What drives service life when a hanger spring will never be inspected again?

Hanger springs are usually installed at elevation inside insulated pipe racks, so the design has to survive without maintenance access. Three things decide how long it lasts. Design stress at maximum deflection has to stay low enough that the spring does not take permanent set and lose supporting force. The surface has to stay intact, since corrosion pitting on the wire creates a stress concentration that becomes a fatigue origin. Set point and travel have to match reality, because a spring bottoming out against its housing on every thermal cycle sees loads the design never accounted for.

What information do I need to supply for a pipe hanger spring quote?

Coiling Technologies can quote from a hanger manufacturer's drawing, a load and travel specification, or a sample of the spring already in service. Useful inputs include supported load, calculated travel and direction, the housing envelope the spring has to fit, operating and ambient temperature, and the plant environment driving finish selection. For a replacement, provide free length, outside diameter, wire diameter, coil count, and end configuration if you have the part in hand. Send the failed spring where one failed early, since set, pitting, or fatigue origin tells the engineering team whether material or finish should change.