steel for springs C60 external o 23.5 mm UNI 7437 - DIN 472CIMBALI:568101000FAEMA:568101000,LF-5500151GRIMAC:1300900014,C423IBERITAL:4576,9615V.F.A.:LF1348029..
out of stainless steel for springs C60 internal o 14.7 mm - thickness 1 mm UNI 7435 - DIN 471FAEMA:4081050302GAGGIA:LF1348320GRIMAC:F812IBERITAL:2192MARZOCCO:L1653,LF-1348320..
in zinc plated iron alloyexternal o 14.3 mm - thickness 0.9 mmUNI 7434 - DIN 6799BEZZERA:7810601GAGGIA:U701003IBERITAL:2334,5732IME OMNIWASH:AM013NTNUOVA SIMONELLI:18010005PROMAC:37510700RANCILIO:37510700SAECO:U701003SAN MARCO:204063SPAZIALE:01757,LF..