Torsion springs of shape: simple or double torsion in wire with circular, square and rectangular cross-section. Available in wire:
UNI EN 10270-1 = SM, DM, DH PHOSPHATED, GALVANIZED, ZINC-ALUMINIUM CLASS II
UNI EN ISO 6931-1 = 1.4310 (AISI 302), 1.4401 (AISI 316) AND, ON REQUEST, ALL TYPES OF STAINLESS STEEL