White Galvanized Bundy Tube

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.

When tube is formed and brazed in the continuous production line, instant Eddy current automatic inspection system keeps detecting any potential imperfections of inner structure of the tube. Once the imperfections are detected, they will be automatically shown and notified by the system:

1. An alarm sound is triggered and broadcast by a loud speaker.
2. A flashing alert light on the machine shall be turned on.
3. An automatic online printer shall mark the tube sections with imperfections with ink, then the imperfect tube sections shall be cut and removed.

The following tests shall be done to make sure the tubes are suitable for hydraulic applications of automobiles.

1. Tensile test.
2. Hardness test.
3. Bending test.
4. Expansion test.
5. Developing test.
6. Flattening and bending test.
7. Pressure-proof test.
8. Burst pressure test.

The following tests shall be conducted to determine how the surface coating/plating performs when protecting the tube from corrosion.

1. Coating/plating thickness test.
2. Corrosion resistance test (neutral salt spray, i.e. NSS).
3. Film performance test (varies according to coating/plating types).

Jika ada pertanyaan,Anda dipersilakan untuk menghubungi sales@grandsteeltube.com

Workshop kami,terletak di Changzhou,meliputi area seluas 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 Meter.

Bahan-bahannya adalah :SPCC,SPHC,SPCE,BHG1, BHG2, materi lain dapat dicapai setelah diskusi.

Terutama ukuran adalah:4.76×0.70mm,6.35×0.70mm,8×0.70mm,9.53×0.70mm,10×0.70mm,12×0.70mm other size like:4.00×0.5mm,3.18×0.7mm,2.60×0.50mm is also produced according the requirements.other sizes can be achieved after discussion.

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

2. Bekerja dengan pelanggan dari Eropa,Asia Barat,Amerika Selatan,sejak 2006.

3. Sampel dapat dikirim dalam 10 hari setelah konfirmasi

4. 40 hari sebagai periode produksi dan pengiriman setelah konfirmasi pesanan.

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

6. Ukuran dapat ditawarkan dari OD:2.60mmxWT:0.5mm ke OD:12.7mmxWT:1.24Mm

7. Inspeksi pihak ketiga seperti:TUV,BV,SGS,dll diterima

8. Tim profesional membantu persyaratan tabung khusus Anda.

9. Other related tubes can be offered :yellow/black/olive green galvanized bundy tubes,PVF bundy tubes;dll

Kami telah mengirimkan tabung ini ke Peru,Prancis,Rusia,Korea Selatan untuk industri otomotif,since 2011.etc.If any questions,Anda dipersilakan untuk menghubungi sales@grandsteeltube.com

Jika ada pertanyaan,Anda dipersilakan untuk menghubungi sales@grandsteeltube.com