High strength, easy for installation and replacement. Fully comply with AREMA standard in each test items Standard ones or non-standard requirements or drawings from customersMaterial: 65Mn or specified by clientsProtection: plain (oiled), hot dip galvanized, white zink plated, yellow zink plated, black, dacromet, geomet or others specified by the customersProduct Standard: AREA 1967,DIN127, ANSI ...