Products & Capabilities

State-of-the-art Engineered Springs

For more than 120 years, Duer/Carolina Coil has been perfecting the art of engineered springs. Our products are used throughout the world in some of the most demanding applications, servicing our customers’ exact needs for quality, performance, price and delivery.

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Our Products

Hot  Wound Springs

We manufacture hot wound springs from 0.50” (12.7mm) to 3.125” (80.00mm) bar. Our proprietary furnace technology and highly specific manufacturing processes guarantee consistency from spring to spring. This allows us to offer unparalleled metallurgical integrity and the most value for your investment.

All of our hot wound springs endure in-process inspection at each step of manufacturing to ensure product conformance, and we have computerized load-testing equipment capable of testing loads from 50 pounds (23 kilograms) to 150,000 pounds (68,000 kilograms).

Image of a hot wound spring being wound
Image of a cold wound spring from Duer Carolina Coil

Cold Wound Springs

We begin with the highest quality raw materials to create cold wound springs from .250’’ (7mm) to .750 (18.75mm), offering high tensile chrome silicon for maximum travel. From there, all of our products undergo a carefully controlled manufacturing process using our state-of-the-art machinery, including CNC coilers and an in-house powder coating line.

Our automated powder coating and liquid paint lines offer a wide selection of colors and finishes; in addition, we’re able to print individual part identification codes to customer specifications. All of this is done to provide you with the most consistent and reliable cold would spring.

Various end configurations, including:

  • Compression
  • Extension
  • Torsion
  • Pigtail
  • Conical
  • Variable pitch
  • Special configurations
Image of steel used to create hot wound springs
Small DC Coil logo in gray

Our Capabilities

In addition to manufacturing springs, Duer/Carolina Coil serves as a partner for our clients during every step of their production processes. Our team’s engineers work with our clients’ engineers to optimize function, value and style. We can assist with concept development, design specification, material requirements and in some cases, quick turn prototypes.

Our unmatched focus on client satisfaction and quick turnaround times make us the obvious choice for any of your engineered spring needs.

Duer Carolina Coil engineer at work

Our Springs Can Be Used For the Following Applications