in bulk roll steel brake line tubing

In Bulk Roll Steel Brake Line Tubing

Steel brake line tubing,steel material with white zinc plated,in bulk roll package,0.71mm thickness,available outer diameter 4.76mm,6mm,8mm.

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In Bulk Roll Steel Brake Line Tubing


Steel brake line tubing:Steel material;White zinc plated;In bulk roll package;0.71mm thickness;Available outer diameter 4.76mm,6mm,8mm

Features:

  • Cost Effective Price
  • Reliable and Professional
  • ASTM A254-97 Standard
  • 100% inspect before shipping
  • Various size available
  • Available custom steel brake lines
  • Free sample for checking
  • OEM and ODM service provided

Available Covering Finishes:White zinc plated,Yellow zinc plated,Dark green plated,PVF..

Available Package Type :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.

copper-brazed-steel-tubing-type

Dimensions and Tolerances
Nominal Tubing OD Outside Diameter Wall Thickness
inch mm Basic mm Tolerance± Basic mm Tolerance±
3/16 4.76 4.78 0.08 0.71 0.08
1/4 6.35 6.35 0.08 0.71 0.08
5/16 8 7.92 0.08 0.71 0.08
3/8 9.52 9.53 0.08 0.71 0.08
1/2 12.7 12.7 0.1 0.89 0.09

Specification and Test

Test Item Technical Standard Test result
Mechanical Property Tensile Strength290Mpa 296Mpa
Yield Strength 180Mpa 185Mpa
Elongation20% 30%
Wall Thickness 0.70+-0.1mm 0.71mm
Flaring Test Flaring25% 30%
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

 

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