China Railway Gn70 Oil Tank Wagon

GN70 oil tank wagon Description
Load 70t
Tare ≤ 23.8t
Axle load 23t+2% -1%
Total volume 78.1m3
Efficient volume 73.7 m3
Equivalent length 1.1
Tare coefficient 0.34
Load per meter of track ≤ 7.68t/m
Min. Radius of curvature 145m
Commercial operating speed 120km/h
Brake leverage 7.5
Brake ratio ( for common brake position)
Empty 26.5%
Loaded 17.2%
Brake distance (loaded, emergency) ≤ 1400m
Track Gauge 1435mm
The wagon is of a structure without center sill. The tank body is of right cone circular section slope bottom structure. The bottom is inclined downward from both ends of body to middle cross section. Heating system with inner-set exhausting pipe is used. Open-type manhole and two safety valves for breathing are set on the top of tank. Draft sill is made of hot rolled 310Z-steel with yield strength 450KPa. Such wagon has the side ladder, with the workbench and guardrail on top of the tank. Coupler draft gear contains 17 type coupler, 17 type forged steel yoke, MT-2 draft gear. Air brake system of which the brake main pipe pressure achieves 500Kpa and 600Kpa is adopted, including 120 type controlling valve, integral spinning sealed brake cylinder, ST2-250 type BI-direction brake shoe slack adjuster, KZW-A type empty and load automatic adjuster and automatic braking equipment in derailment condition and so on. Stainless steel brake fittings, piping system and high friction coefficient compositive brake block are used. Hand brake device is NSW hand brake machine. Converted K6 bogie is adopted.
Such wagon is operated on standard gauge railway, to transport crude oil, heavy diesel, lubricating oil etc. Load and discharge are both operated on the top.