Hydraulic brake pipe,black zinc with rubber tube in center,4.76mm outside and 0.71mm thickness,with flare tube fittings for cars.
Hydraulic brake pipe:Black zinc;With rubber tube in center;4.76mm outside;0.71mm thickness;Fit with flare tube fittings for cars
Available Covering Finishes of Hydraulic Brake Pipe:White zinc plated,Yellow zinc plated,Dark green plated,PVF..
Available Package Type of Hydraulic Brake Pipe :In roll,In bulk roll,In pancake,In straight or special request..
Our Copper-Brazed Steel Tubing confirm to the ASTM A254-97 Standard Specificaion.It can be used for fuel lines,brake lines,oil lines of Automotive uses,cooling units of refrigeration uses and stove industries.ect.It made by rolling steel trip into the form of tubing and subsequently copper brazing in a reducing atmosphere.After a various of analysis,like heat analysis and product analysis,and through tension tensile strength,flattening,expansion,bending and pressure proof test to ensure the quality.
Two types of copper-brazed steel tubing for choice:Single Strip Type or Double Strip Type.
|Dimensions and Tolerances|
|Nominal Tubing OD||Outside Diameter||Wall Thickness|
|inch||mm||Basic mm||Tolerance±||Basic mm||Tolerance±|
Specification and Test
|Test Item||Technical Standard||Test result|
|Mechanical Property||Tensile Strength290Mpa||296Mpa|
|Yield Strength 180Mpa||185Mpa|
|Bending Test||Bend 180°C in a Radius Three Times of the Pipe Diameter||No Crafk or Peeling After Flaring|
|Flattening Test||No Crack After Flattening||No Crack|
|Pressure Test||No Leakage when Charged with 34.3Mpa Nitrogen Gas for 1min||No Leakage|
|Thickness per Surface Treatment of Galvanize(μm)||9μm|
|Thickness per Inner Treatment of Copper-Plating||3μm|