Bundy Tube, originally called the double wall low carbon steel tube, is now used to refer to single wall low carbon steel tube in many areas, because many of the application and post-processing of the tubes are very similar. This name sometimes confuses many readers.

There are very obvious characteristics of these two types of tubes, and below are some facts of each of them.

We offer both double wall Bundy tubes, and single wall welded tubes, with different surface coating for corrosion protection and long-lasting reliability for your application.

Type

Welding
Technique

Resizing
Method

Seam

Dimensional
Accuracy

Strength


Inside
Clearliness


Vibration
Resistance


Safety Against
Pressure


Application

 

 

 



Original
Surface


Surface
Coating

Double Wall (TDW)


Copper Brazing



Cold Drawn



720 Degree Seamless


High



Mostly Made Hard



Good



Strong



High



Automobile brake lines, fuel lines, transmission cooler lines, power steering lines; certain hydraulic pipes, etc.

Copper

Copper

Zinc

GALFAN

PVF

Nylon

Epoxy

Nickel

Single Wall (TSW)


High Frequency ERW



Cold Drawn



Straight Line Seamed


High



Can Be Soft or Hard



Poor



Poor



Low

 



AC, refrigeration, heat exchanagers, automobile fuel lines; compressors, etc.

None (Steel)

Zinc

GALFAN

PVF

Nylon

Epoxy

Nickel

Single and Double Wall Bundy Tubes

Stainless Steel Products

561 Acorn Street, Suite T
Deer Park, NY 11729

888.767-3040

631.243.1500

sales@stainlesswires.com

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