... , ductile iron Mechanical class 40kN - 90kN Rail way insulator hardware1.Materials in C45, ductile ... 90kN3.Hot galvanized coating protection against corrosion4.Materials testing acc.to EN10083-1,-2, AISI-SAE ... J403, ASTM A536, A3955.Dimension testing acc.to IEC 60120, 61466, ANSI C29. ... 26.Galvanization testing acc.to IEC 60383, ISO 14713, 1461, ASTM A123, A153 Rail way insulator hardware ...