تاریخچه استاندارد
ANSI B77.1   2022   Passenger Ropeways – Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors – Safety Requirements 8000000 ریال
ANSI B77.1   2022   Passenger Ropeways - Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors - Safety Requirements 8000000 ریال
ANSI B77.1   2017   Passenger Ropeways – Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors – Safety Requirements 8000000 ریال
ANSI B77.1   2011   Passenger Ropeways – Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors – Safety Requirements 8000000 ریال
ANSI B77.1   2006   Passenger Ropeways – Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors – Safety Requirements 8000000 ریال
ANSI B77.1   1999   Passenger Ropeways – Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors – Safety Requirements 3000000 ریال

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