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

Changzhou Joyruns Steel Tube Co., Ltd specializes in the export of steel pipes for 20 years. We have been a leading supplier of high-quality steel pipes of carbon, alloy, nickel material & copper, which is one of the most professional Bundy and stainless steel pipe manufacturers in China.

Changzhou Joyruns steel tube Co., Ltd has advanced technology, equipment, management and a good reputation, ensures that high-quality products and services are provided, the customer is satisfied. The company has implemented an effective quality assurance system, and long-term planning, maintenance, control and improvement of the quality of the products. 

We uphold the "JOYUNS" brand "win-win cooperation and practical innovation"

The product categories are as follows:

Bundy tube: Single-wall copper tube, Single-wall galvanized tube, Double-wall copper pipe, Double-wall zinc-coated Bundy tube, Aluminum tube, Copper tube

Carbon steel pipe: A179 heat-exchanger tube, Boiler tube, Alloy tube, Automobile precision pipe

Stainless steel pipe: Austenitic stainless steel pipe, Duplex/Super Duplex stainless steel pipe, Nickel alloy steel pipe, Titanium steel pipe.

All staff sincerely thank you for your concern and use of our products, and sincerely welcome your valuable comments on our products and services.