Bundy tube

Bundy tube, sometimes called Bundy pipe, is a type of double-walled and single-walled low-carbon steel tube manufactured by rolling a copper-coated steel strip through 720 or 360 degrees and resistance brazing the overlapped seam in a process called Bundywelding. 

Applications:

Automotive parts (Fuel supply and return lines, vent and vacuum lines, fuel rails, power steering, engine and oil coolers, HVAC components, fuel filler necks)

Refrigeration parts(condensers, compressors, hot tubes, suction tubes, dryer and capillaries, and the core cycle parts of refrigerators.)

Standards:

ASTM-A254 American Society for Testing Materials

SAE-J526 & J527 Society of Automotive Engineers

JASO M 101 Japanese Automotive Standards

GM123M, 124M GM Standards

Surface treatment:

Copper coated, zinc coated, PVF coated,Galfan coated

white zinc: 5um - 25um

yellow zinc: 5um - 8um

olive green zinc: 10um - 15um

PVF: Zn(5um - 25um)/PVF(15um - 25um)

PA: Zn(5um - 25um)/PA(80um - 150um)

Galfan: ZnAl(5um - 8um)/E(5um - 8um)

Shape:

Coil, pancake coil, straight length, Flared

Mechanical property:

Tensile strength: ≥290Mpa

Yield strength: ≥180MPa

Elongation: ≥14%

Tube OD: 3.18mm - 15mm

Wall Thickness: 0.5-1mm

Innernal cleanliness: ＜0.16g/m2

Hardness HR30T: ≤65

If you have any interest please feel free to contact us.

Email:shdoshen@163.com

Shaanxi Yong Rui Industry Co., Ltd. We are a leading manufacturer of Bundy tube.