Compression spring Conical and cylindrical springs, with constant or variable or pitch, in round wire in square or rectangular section; diameter from 0,07 mm to 20,00 mm.
Compression spring – reference standard
UNI 7900-1:1978
UNI 7900-6:1980
UNI 7900-7:1981
UNI 8525:1984
UNI EN 13906-1:2003
Compression spring – raw material used
Carbon steel wire norm EN 10270-1 with in addition for SM, SH, DH
Carbon steel wire norm EN 10270-1 with in addition for SM, SH, DH in pre- galvanized, Alumar® e Bezinal®
Steel wire pre-temperate norm EN 10270-2FD, TD, VD Cr-Si
Inox steel wire norm EN 10270-3 e type 1.4301, 1.4539 according to norm EN 10088-3 type 1.4310, 1.4310 HS, 1.4568, 1.4404.
Copper alloys: norm EN 12166 Brass phosphor bronze phosphor.
Nickel alloys: ™Inconels, ™Nimonics and others.
Production line batch
Small amount: ten of pieces
Large amount: millions of pieces
Treatments
Epoxide coating
Cataphorised coating
Zintek® coat
Geomet 320®
White and yellow trivalent galvanization (free from Cr VI)
Phosphated, Passivation, Nickel, Chrome platings, Thick chrome, Hard chrome, Chemical nickel, gold, silver, brass, copper and Shot peeninig.
