extension springs have attachment 'eyes'. We offer a range of finishings: English eyes (winding runs to the heart of the spring before forming the eye), German eyes (a transformed winding), lateral eyes, loose eyes, loose laser-processed pieces, double eyes, all sorts of eye stems, and so on.
And you should know that each end can be different. Nothing is impossible with Hermans Verenfabriek!
Besides trampolines, you find extension springs used in many other types of fitness equipment, as well as in door closers and tensioners for architectural canvas. Agricultural implements, garage doors, ovens and many machines have extension springs too.
We use 0.15 mm to 14 mm spring steel quality wire to make extension springs, using, 1.1200, SH - EN 10270-1 (bright spring steel) and 1.4310 (stainless steel spring steel). And we can use other materials too.
In addition to those regular materials, we work a lot with the following:
We also have a large stock of pre-galvanized materials.