JSC 'SPRING FACTORY' Bulgaria
Since 1974. ISO-9001.

Extension Springs (Tension Springs)

We manufacture high-quality helical extension springs (tension springs) from premium materials to match custom B2B technical requirements:

Steel spring wire diameter: 0.15 - 6.50 mm
Spring wire materials: Carbon steel EN 10270-1; Stainless steel EN 10270-3.
End loops & hooks: Half, German, English, extended, side hooks, and other custom end configurations.

Custom helical extension and tension springs made in Bulgaria

(Click the image to enlarge)