Automotive Parts Double Wall Brazed Galvanized Stainless Steel Brake Lines

automotive parts double wall brazed galvanized stainless steel brake lines



Basic information of stainless steel brake fuel lines   
Inspection Report of stainless steel brake fuel lines   
Test of various stainless steel brake fuel lines 
Bending test:
Bend the tube 360º over a mandrel of 3 times, the diameter no kinking, cracking or other defect.

Flaring test:
Increase the OD 25% with the flaring reshed of the 1:10 spindle taper, no broken or crack

Flatten test:
GB/T 241
The weld shall be placed at 90º from the direction of applied force, no crack or flaw when flattened between parallel plates to a distance equal to three times the wall thickness.

Pressure-resistant properties: 
Keep in 41.2MPa pressure for 5 minutes, no burst or leakage phenomenon.

Water resistance: 
Soaked in 40 ºC distilled water for 240h, no red rust and blistering.

Liquid resistance: 
Respectively soaked in brake fluid, power steering fluid, motor oil at 50 +/- 2 °C and soaked in 35% sulphuric acid, gasoline (unleaded), anti-freezer, windshield washer at 23 +/- 2 °C for 504 hours. No lifting and blistering
coating should be evident at knife cut under 10X magnification

1. No scribed samples:
Assessing after gravelometer test. Then do 2000h salt spray test, and then do burst pressure test. The burst value should be more than 80% of original value.
2. Scribed samples:
2000h salt spray test, then do burst pressure test. All the burst value should be more than 80% of original value.

Salt Spray test: over 2000-3000 hours without red rust


PS: We are under FORD executive standard, but we can do adjustment to satisfy clients' product
technical requirement.



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