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.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).

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.