The Pioneer Spring Mfg. Co.

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.

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.