Traction Springs 0,10mm-14,00mm MaterialsPiano Strings SM/SH/DH/SM-SH Galbanized (EN 10270-1)Carbon Steels FD Si Cr / TD Si Cr / VD Si Cr (EN 10270-2)Phosphorous Bronze CuSn6 (En 12166)Alloy SteelsStainless Steels A301 /A302/ A316. (EN 10270-3)Special Packaging Soluciones de embalaje Extra Treatments Zinc/ Bicromate without CR VI(6) Phosphating Kataforesis Chemical Nickel Planting Deltatone / Geomet 500 Burnish Tempered Teflonado Extra Test Corrosion Live enduring Test Relax Polution Torque and bulk Ask for a budget