This part specifies the type, marking, materials, technical requirements, inspection rules, test methods, marking and packaging of positioning tubes. This section applies to the positioning tubes at the positioning of contact wires in electrified railway contact network systems.
2010TB/T 2075.3-2010 Fittings for overhead contact system in electrification railway.Part 3:Limited steady device
2002TB/T 2075.21-2002 Fittings for overhead contact system of electrification railway-Part 21:Steady tube
TB/T 2075.21-2002 Fittings for overhead contact system of electrification railway-Part 21:Steady tube was changed to TB/T 2075.3-2010 Fittings for overhead contact system in electrification railway.Part 3:Limited steady device.