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        Testing

        Test Facility

        Aging Tester
        Aging Tester
        Durometer
        Durometer
        Impulse Tester
        Impulse Tester
        Tensile Tester
        Tensile Tester
        Vulkameter
        Vulkameter

         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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