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Brake pipe
In addition to pipe joints, the brake system is used to transmit or store the hydraulic pressure, air pressure or vacuum degree of the flexible conveying pipe for the application of automobile brakes.
jacket
A protective device installed on the outside of the hose to improve the scratch resistance or impact resistance of the hose.
Brake hose assembly
This is the brake hose with pipe joints. The brake hose can be sheathed or without sheath.
Free length
The length of the exposed part of the hose between the two pipe joints on the hose assembly in a straight state.
Brake hose connector
In addition to the clamp, a connecting piece attached to the end of the brake hose.
Permanently connected pipe joints
The connected pipe joints are assembled by crimping or cold extrusion deformation, or every time the hose is reassembled, the damaged bushing and ferrule pipe joints are required to be replaced.
burst
Failure to cause the brake hose to be separated from the pipe joint or leak.
Vacuum piping connector
Refers to a flexible vacuum transmission tube:
a) It is a connector between metal pipes in the brake system;
b) No pipe joints are required during installation;
c) When assembling, its unsupported length is less than the total length of the part that contains the metal pipe.
Test conditions
1) The hose assembly used for the test should be new and should be aged for at least 24 hours. Keep the hose assembly at a temperature of 15-32°C for at least 4 hours before the test;
2) For the hose assembly for flexural fatigue test and low temperature resistance test, all accessories, such as steel wire sheath, rubber sheath, etc., must be removed before being installed on the test equipment.
3) Except for high temperature resistance test, low temperature resistance test, ozone test, and hose joint corrosion resistance test, other tests must be carried out at a room temperature of 15-32 °C.
