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10MM¡Á17MM AIR BRAKE HOSE
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NO.
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TEST ITEMS
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SPEC.
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QDGY BRAND TEST RESULT
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1
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VISUAL INSP.
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NOTHING ABNORMAL
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OK
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2
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FEELER GAUGE SIZE
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6.6MM 40-100g
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OK
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3
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PROOF PRESSURE
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ONE END BLOCK UP, THE OTHER END FILL 1.4MPA
AIR OR NITROGEN UNDER WATER FOR 3MINUTES
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NO LEAKS
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4
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WATER PRESSURE TEST
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FULL WATER OF HOSE, MARK 300MM UNDER 0.1MPA
PRESSURE, TEST DISTANCE UP TO 1.4 MPA
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LENGTH CHANGE FROM +0.5 TO -0.7%
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5
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BURST TEST
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6.5MPA/MIN PRESSURE UPTO BURST
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¡Ý6.5MPA
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6
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TENSILE TEST
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450MM, 25-30MIN. UPTO BRAKE
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¡Ý1500N(150KG)
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7
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ADHESION TEST
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LENGTH 100MM, WIDTH 25MM, 25¡À1.5MM/MIN
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15N(1.5KG/CM)
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8
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HIGH TEMPERATURE RESISTANCE TEST
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BEND£¬ AT100¡À2¡æ FOR 72 HOURS, STRIKE WITH
0.5KG
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INNER AND OUTER NO CRACKS
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9
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LOW TEMPERATURE RESISTANCE TEST
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BEND HOSE AND EXPOSE AT -40¡À2¡æ FOR 72HOURS
THE BEND SHALL BE COMPLETED IN A PERIOD OF 3-5S
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NO LEAKAGE
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10
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WATER RESISTANCE TEST
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HOSE ASS'Y IMMERSE IN WATER AT ROOM TEMPERATURE,
AFTER 168 HOURS, STRAIGHTEN
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¡Ý1500N(150KG0
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11
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OIL RESISTANCE TEST
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1.5-2G INNER TUBE IMMERSE #10 OIL, 72HOURS
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VOLUME INCREASE¡Ü100%
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12
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OZONE TEST
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50+5PPM; 40¡æ+3¡æ 72H,7X MAGNIFICATION
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NO CRACKS
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13
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SALT SPRAY TEST
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USE SALT SPRAY (FOG) TEST THE HOSE FOR 24
HOURS, THEN USE CLEAN WATER(37¡æ)WASH, DRY IN 2 MIN
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NO CORROSION LOSS RATE¡Ý0.01
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14
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BEND TEST
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AFTER HIGH TEMPERATURE TEST, BEND TEST IN
168 HOURS, FILL IMPA AIR, KEEP 2MIN, STRIKE ONE MILLION TIMES
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