Economic ACR Coolant & Automotive Fuel Tubing

Single Wall Welded Steel Tube For Heat Exchangers

Single wall welded steel tube of small diameter is widely used in automotive, refrigeration, air conditioning and other heat exchanging applications.

Single wall welded steel tube is also called Single Wall Bundy Tube in some areas of the world, because it is made from steel strips from thin steel sheets, and many of this kind of tubes are coated with copper, zinc or other surface protection materials just like the double wall brazed Bundy tubes are.

  • High Dimensional Accuracy
  • Satisfying Mechanical Properties
  • Clean Inside Surface
  • Flexibility of Customized Sizes
  1. 1
    Regular Sizes

    OD, mmThickness, mm
    0.500.600.650.700.800.901.001.20
    3.18
    4.00
    4.76
    5.00
    6.00
    6.35
    7.94
    8.00
    9.53
    10.00
    12.00
    12.70

  2. 2
    Tolerances

    ODBasic AccuracyHigh Accuracy
    <4.76±0.08mm±0.05mm
    4.76 ~ 8.00±0.12mm±0.07mm
    >8.00 ~ 12.00±0.16mm±0.10mm
    >12.00±0.20mm±0.12mm

  3. 3
    Mechanical Properties

    TypeTensile, MpaYield, MpaElongation, %
    Soft Tube280-320≥170≥35
    Hard Tube320-350≥200≥25

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