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YH Youhao class steam locomotive

YH class
Sujiatun steam locomotive museum April 1999
The YH class is the large locomotive for the freight that was designed in the 1930's in the Soviet Union. Gradually the railroad of the Soviet Union was electrified. With it a steam locomotive became surplus. But China railway was lacking a steam locomotive. In 1958 China and the Soviet Union exchanged the contract that locomotive exports. About 1000 steam locomotives went to China and regauged to 1435 mm. In commemoration of this case, China named this locomotive with the Youhao (meaning of friendship) class. Several years later the relation between China and Soviet Union deteriorated. By that reason, this locomotive was called the FD (Felix Dzherzhinsky) class now.

Data of YH class
Whell arrengment 2-10-2 Hearting surface(m2) 443
Length(mm) 29,104 Loading capacity of water(m3) 44.0
Weight on driving wheel(t) 103.00 Loading capacity of coal(t) 20.0
Grate area(m2) 1,500 Cylinder Diamensions(mm) 670×770
Boiler pressure(kg/cm2) 15.00 Grate area(m2) 7.04

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