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     Test Reports

    Product

    Fuel dispenser hose

    Size:

    3/4”

    Date:

    2018.7.25

    Standard:

    HG/3037-2008

    No.:

    Projects:

    Technical Method:

    Standard

    Measured value

    Test result

    1

    Tensile strength of inner rubber and outer rubber (min)

    GB/T528

    9 Mpa

    11.2 Mpa

    Conformity

    Elongation of elongation for inner rubber and outer rubber (min)

    250%

    280%

    Conformity

    2

    Accelerated aging

    ISO188(Air oven)    

    under (70±1)℃14d

    20%

    16%

    Conformity

    Tensile strength of inner rubber and outer rubber (max)

    Elongation of elongation for inner rubber and outer rubber (max)

    -35%

    -22%

    Conformity

    3

    Liquid resistance

    70h under 40℃ 3 type fuel oxidation;

    70h under 100℃  IRM903 oil.

    70%

    53.20%

    Conformity

    Swelling rate of inner rubber (max)

    25%

    15.60%

    4

    Solvent extract of inner rubber, Room temperature level (max)

    70h under 40℃3 type fuel oxidation

    and 24h under 100℃ dry

    10%

    4.20%

    Conformity

    5

    Swelling rate of outer rubber (max)

    70h under 23℃B liquid soak.

    100%

    23.20%

    Conformity

    6

    Low temperature resistance under -30℃  of inner and outer rubber

    GB/T528

    No creak under 10times magnification

    No creak

    Conformity

    7

    Ozone resistance of outer rubber

    168h under HG/T2869(50±5) mPa concentration, 40±2℃, relative humidity (55±10)%,stretch 20%

    No creak under 2 times magnification

    No creak

    Conformity

    8

    Test pressure (2.4 Mpa)

    GB/T5563 W.P pressure testing

    No leakage or other defects

    No leakage

    Conformity

    9

    Break pressure (min)

    GB/T5563 B.P pressure testing

    4.8Mpa

    12Mpa

    Conformity

    10

    length varying - ratio under test pressure:

    GB/T5563

    0-5%

    1.10%

    Conformity

    11

    Ply bond strength

    Inject the B liquid into the hose for sealing,

    after 168h under (23±5) ℃, empty liquid for test

     

     

    Conformity

    initial value (min)

    2.4KN/m

    unpeelable

    Soak value (min)

    1.8KN/m

    3.2 KN/m

    12

    Conductivity (max) M class

    GB/T9572

    1*102Ω

    1*101Ω

    Conformity

    13

    Low temperature bending test

    GB/T9572

    No crack or fracture

    No crack or fracture

    Conformity

    14

    Volume expansion rate (max):

    Under 0.3MPa no larger than 1%

    Under 0.3MPa no larger than 1%

    0.20%

    Conformity

    15

    UV-Resistance

    BG/T16422.3

    No crack

    No crack

    Conformity

     

    Comprehensive judgment:

    Conform to HG/T3037-2008 requirements,

    test result to be qualified.

     

     


    Assessor: Yonghua Yan

    Date:2018.7.25



    Inspector: Weiwu Yang    

    Production Name

    R17

    Production Date

    2018-8-1

    Size

    5/16

    Examination Date

    2018-8-02

    Operative Norm.

    SAE R17

    NO.

    Testing Item

    Unit

    Standard Request

    Testing Result

    Single Judgment

    1

    Appearance


    Non-wire braided outside,Disallow bleb、Gape、Sponge、Delamination

    No Flaw

    OK

    2

    Dimension

    mm

    I.D.:7.9±0.3 mm
    O.D.:14.8±0.5mm

    7.9
    14.8

    OK

    3

    Seal Function

    Psi

    Test Pressure is no less than 1.5 times of Appointed Work Pressure,Say 3000 psi,Pressure Holded 1min,without leakage and damage.

    3000 psi

    OK

    4

    Length Variation Rate

    %

    Under the designed Work Pressure, length of hose is no more than -4%~+2%。

    -3%

    OK

    5

    Burst Pressure

    Psi

    Test pressure is 4 times of Appointed pressure, Say 12000 psi,Pressure Holded 1min,Without any breakage,then rise up the pressure until breakage.

    12000 psi

    OK

    6

    Min. Bend Radius

    mm


    55 mm

    OK

    Testing Result

    Meeting the criterion after Testing,hoses be allowed to shipment.

    Examination Clerk: Wang Xiu Verification Clerk: Xing amiao

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