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Product name
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Rubber Brake Hoses for Railway Locomotive and Car
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delivery medium
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compressed air (oil resistance)
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temperature available
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From -50Degrees CelsiusTo 70Degrees Celsius
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reference standard
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HG 7542-87
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Inside Diameter
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Outside Diameter
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Sub thickness No less than
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Number of layers
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Product length
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||||
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size
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tolerance
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size
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toleranc
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protectionlayer
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rubber
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size
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tolerance
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36
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+-1
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53
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+-1
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2.3
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1.2
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5
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565
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+-5
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Testing project
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Units
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index
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0.9Mpa(9kgf/cm2)Wind test
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-
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Do not leak
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1.4Mpa(14kgf/cm2)Hydraulic test
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Diameter changes Not more than
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mm
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6
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Length change Not more than
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10
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Reverse changes Not more than
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20
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Pressure of work Not more than
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Mpa
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0.9(9kgf/cm2)
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Burst pressure No less than
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Mpa
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5.4(54kgf/cm2)
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Stick with strength No less than
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The glue with cloth
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kN/m
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1.5(1.5kgf/cm)
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And the inner rubber??Cloth and cloth
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2(2kgf/cm)
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Tensile strength No less than
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Inner rubber
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Mpa
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10(100kgf/cm2)
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The glue
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11(110kgf/cm2)
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Tore elongation No less than
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Inner rubber
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%
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300
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The glue
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350
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Aging performance(70Degrees Celsius*72h)
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Tensile strength variation
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%
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+25--25
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Tore elongation rate
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+10--30
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Drought-resistant coefficient(-45Degrees Celsius)No less than
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Inner rubber
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-
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0.35
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The glue
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0.4
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