Brazed Double Wall Tube for Automobile

Brazed Double Wall Tube for Automobile

Brazed Double Wall Bundy Tubes for automobiles produced by Grand are capable of extending the lifespan of automobiles and satisfy environmental regulations. They have been developed with high corrosion-resistance and are environmental-friendly.
Products manufactured with the latest technologies developed over 15 years are being mainly used in the pipelines of brakes and fuel systems. Outstanding in pressure resistance and mechanical properties, these tubes provide excellent rust-proofing together with high thermal transmission and low inner-fluid resistance.

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Bundy tubes are fully monitored during the tube fabrication, and also gone through a series of inspections to make sure they are safe and reliable for hydraulic uses.

Test and inspection items specified in standards of different countries are generally the same or very similar. We manufacture the tubes and issue test reports as per Chinese standard if no other particular requirement comes from buyers.

One thing to note is that the material listed in those standards are slightly different among countries. Low carbon steel is required commonly, but the chemical composition of the material varies, especially for carbon. In most of these countries, the steel grade exists already in their steel industry. In China, there is equivalent steel grades, but we specially developed a steel grade, BHG2, that is much more suitable for the double wall brazed steel tubing manufacture, perfect mechanical properties for the tube forming and also for the final tubes.

Suction tubes,

Power Steering Tubes

Clutch Tubes

Fuel Pump Tubes

Fuel Tubes

Sun Roof Tubes

Power Steering Cooler Tubes

Brake & Fuel Tubes Ass’y


If any questions,you are more than welcome to contact

Our workshop,located in Changzhou,covers an area of 13,000 square meters equipped with the state-of-art facilities to manufacture the double wall bundy steel tubes and single wall bundy steel tubes .The monthly production capacity is 3,000,000 meters.

The materials are :SPCC,SPHC,SPCE,BHG1,BHG2,other materials can be achieved after discussion.

Mainly sizes are:4.76x0.70mm,6.35x0.70mm,8x0.70mm,9.53x0.70mm,10x0.70mm,12x0.70mm other size like:4.00x0.5mm,3.18x0.7mm,2.60x0.50mm is also produced according the requirements.other sizes can be achieved after discussion.

1. Production of  double wall bundy steel tubes & single wall bundy steel tubes since 2005.

2. Working with customers from Europe,West Asia,South America,since 2006etc

3.  Samples can be delivered within 10 days after confirmation

4.  40 days as the production period and delivery after order confirmation.

5.  200,000 meters of copper coated bundy steel tube  in stock.

6.  Sizes can be offered from OD:2.60mmxWT:0.5mm to OD:12.7mmxWT:1.24mm

7.  Third party inspection like:TUV,BV,SGS,etc accepted

8.  Professional team assists your special tube requirements.

9.  Other related tubes can be offered with competitive prices:white/yellow/olive green galvanized double wall bundy tubes,PVF bundy steel tubes;etc

We have been delivering these tubes to Peru,France,Russia,South Korea for the automotive industry,since 2006.etc.If any questions,you are more than welcome to contact

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