Rail Track

High Quality Rail Track – AGICO RAIL

About railway track 

Rail track, also called railroad track, steel track and so on, is widely used in the railway system. Together with the cooperation with the railroad switch, it can make trains running without turning to the other directions. In general, rail track is consist of two parallel steel tracks and lays steadily on the railway sleepers. With the development of railway industry, the steel is widely used in the industry. Compared with other materials, the steel have a larger tolerance to bear more weight. The steel track can disperse the weight of the steel tracks and keep the stability of the railway transportation. The stones under the steel tracks can supply a elasticity to the railroad tracks. During the common life, the steel tracks can lay on the base made of concrete and even can be embedded into concrete.

Types of rail track 

China 

1.Crane rail: QU120,QU100,QU80,QU70. They are most consist of manganese steel.  
2.Heavy rail: the 38kg、43kg、50kg standard are widely used. Besides, as to some lines with high speed and vast capacity, they all use the 60kg rail tracks.
3.Light rail: light rail can also classified into two types, GB (China national standards) of 9、12、15、22、30kg/m and YB (Metallurgy Department Standard) of 8、18、24kg/m and so on. 

Abroad

Among the rail track market in the world, there are many typical types. For example, the BS series (such as 90A, 80A, 75A, 75R, 60A and so on) of British, the DIN series of Germany, the ASCE series of America, the JIS series of Japan and the UIC series of International Union of Railways. See more in the document: International Standard Specification for Steel Track

Specifications of typical rail tracks

In order to meet the different requirements of railway system, the rail tracks can divided into many types. According to the railway track weight, the 43kg, 50kg and 60kg are widely used in the railway transportation.

43kg/m

43kg/m rail track
 
project 43kg/m rail steel
Height of steel rail ±0.8
Width of railhead ±0.5
Rail on cross section  
Joint plate mounting surface slope  +1.0
 -0.5
Joint plate mounting surface height ±0.6
The thickness of the rail waist +1.0
-0.5
Rail bottom width +1.0
-2.0
Rail bottom edge thickness  
Rail bottom concave  
Section slope (vertical, horizontal direction) <=1.0
Section of asymmetric ±1.5
Length (temperature of 20 degrees)  

project  number unit
weight of per meter 44.563 kg
sectional area 57 cm²
the distance between center of gravity and rail base 6.9 cm
moment of inertia on horizontal axis 1489 cm4
moment of inertia on vertical axis 260
the lower section coefficient 217.3 cm3
the upper section coefficient 208.3
the bottom section coefficient Left45.0 right 45.0
metal distribution railhead 42.83 %
rail web 21.31
rail base 35.86

43kgrailtrack
43kg rail track

50kg/m

53kg-rail-track

project 50-75/m
Height of steel rail ±0.6
Width of railhead ±0.5
Rail on cross section  
Joint plate mounting surface slope  +1.0
 -0.5
Joint plate mounting surface height +0.6
-0.5
The thickness of the rail waist +1.0
-0.5
Rail bottom width +1.0
-1.5
Rail bottom edge thickness +0.75
-0.5
Rail bottom concave  
Section slope (vertical, horizontal direction) <=0.8
Section of asymmetric ±1.2
Length (temperature of 20 degrees)  

project  number unit
weight of per meter 51.514 kg
sectional area 65.8 cm²
the distance between center of gravity and rail base 7.1 cm
moment of inertia on horizontal axis 2037 cm4
moment of inertia on vertical axis 377
the lower section coefficient 287.2 cm3
the upper section coefficient 251.3
the bottom section coefficient left&right 57.1
metal distribution railhead 38.68 %
rail web 23.77
rail base 37.55

50kg rail track
50kg rail track

60kg/m

60kg-railroad-track-steel-rail
 
project  60kg/m rail steel 
250km/h 350km/h
Height of steel rail ±0.6
Width of railhead ±0.5
Rail on cross section ±0.6 +0.6
-0.3
Joint plate mounting surface slope  +1.0
 -0.5
±3.5
Joint plate mounting surface height +0.6
-0.5
The thickness of the rail waist +1.0
-0.5
Rail bottom width ±1.0
Rail bottom edge thickness +0.75
-0.5
Rail bottom concave <=0.3
Section slope (vertical, horizontal direction) <=0.6
Section of asymmetric ±1.2
Length (temperature of 20 degrees) ±3.0

project  number unit
weight of per meter 60.643 kg
sectional area 77.45 cm²
the distance between center of gravity and rail base 8.12 cm
moment of inertia on horizontal axis 3217 cm4
moment of inertia on vertical axis 524
the lower section coefficient 396 cm3
the upper section coefficient 339.4
the bottom section coefficient left69.9 right69.9
metal distribution railhead 37.47 %
rail web 25.29
rail base 37.24

60kg rail track
60kg rail track
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