The Pioneer Spring Mfg. Co.

Spring tension testing machines operate by applying a force to a spring and measuring its response. The machine typically uses grips to hold the spring, applies a controlled force that stretches or compresses the spring, and then measures the force exerted by the spring in response.

High tensile springs are compression springs manufactured from high strength material that require a heavy load or extra travel. They are typically required for more heavy duty applications such as automotive, military, and heavy duty truck suspensions.