ø 3.2 of hydraulic brake flexible pipe of automobile
Suitable for the unit of flexible pipe in brake system that is connected to brake master pump, branch pump and clutch of automobile, engineering mechanical vehicle and so on.

Executive standard: GB16897-1997
Specification of product:
ID: ø 3.2 mm
OD: ø 105 mm
Length of flexible pipe and connection mode: Produced according to the requirements of drawing or customer.

Properties of product:
100% pressure test: Under 20.7~24Mpa of test pressure for 10~25sec, no leakage.
Amount to be passed from inner hole after neck is contracted: Gauge with ø 3.2 mm of ID, over 2.03 mm of diameter at end as well as over 76 mm of length can pass through freely.

Expansion test:
ø 3.2 mm: HR 2.59 mL/m; HL1.08mL/m
Burst strength: Under 27.6Mpa of pressure for 2 min, burst pressure ?? 34.5Mpa.
Compatibility of break solution: After fill full of break liquid at 93+5 0º C for 70~72 h, it can meet the requirement of neck contracted and after pass another 26.7Mpa for 2mint, its burst pressure should not be les than 34.5Mpa.
Bending and fatigue test: Under 800± 10rpm of rotating disk and 1.62Mpa of pressure, the life of bending test should not be less than 35 h.

Tensile test: Under 25 ± 3mm/min of speed and 1500N of pulling force, the phenomenon of joint falling off and rupture should not be taken place.
Test of low temperature resistant: At -40º C for 70 h, within 3~5 sec, bend it to 180° At least, the surface of flexible pipe should not exist visible crack.
Corrosion stability of joint: After salt fog test for 24 h, the parent metal of joint should not exist corrosive phenomenon.