

Add to Cart
EN10305-1 DC04 Brazed Single Wall copper-coated Bundy tube
4.76*0.55mm
Production Process
Tube welding– Cold drawing (reduce diameter)– Annealing in
Protected Atmosphere- Cleaning-- Leakage detection– Zinc/Copper
Plating– Keep pressure (Airtightness) – Packing
Packing: In coil, in wooden box with seaworthy packing
Application
1) Fluid carrying system for automobiles
2) Fluid carrying system for refrigerators
3) Wire condenser for chillers, showcase
4) Vending machine, ice machine etc.
Single-Wall Steel Tubing with the same coating range as double-wall
tubing but with the addition of a nickel-coated internal diameter
to withstand the corrosive environment created by modern-day fuels.
Single & Double Wall Steel Tubing Bundy tubes that can be
combined with an extensive range of corrosion- and
abrasion-prevention coatings such as NyAl (aluminum and polyamide
coating), NyZinc (zinc and polyamide coating), NyGal (Galfan and
polyamide coating), PVF and many others. These tubes can also be
provided with a polypropylene jacket to provide outstanding
abrasion resistance.
Brazed Double Wall Tubing
Double-wall tubing is produced by roll forming copper-coated carbon
steel strip into a double wrapped tubular shape as shown in the
cross-sectional diagram. The formed tube is passed through a
controlled atmosphere brazing furnace where it is fused together to
produce a sealed tube. Double-wall tubing is ideally suited for use
in applications that are subject to high levels of vibration and
fatigue, such as household and commercial refrigeration
compressors.
Single and Double Wall Bundy Tubes
Type | Double Wall (TDW) | Single Wall (TSW) |
Welding Technique | Copper brazing | High-frequency ERW |
Resizing Method | Cold drawn | Cold drawn |
Seam | 720 Degree seamless | Straight-line seamed |
Dimensional Accuracy | High | High |
Strength | Mostly made hard | Can be soft or hard |
Inside Cleanliness | Good | Poor |
Vibration Resistance | Strong | Poor |
Safety against Pressure | High | Low |
Application | Automobile brake lines, fuel lines, transmission cooler lines, power steering lines; certain hydraulic pipes, etc; | AC, refrigeration, heat exchangers, automobile fuel lines; compressors, etc; |
Original Surface | Copper | None (steel) |
Surface Coating | Copper Zinc GALFAN |
|