2. Article points
3. Copper coated steel strip
4. 720° roll forming copper coated carbon steel strip into a double wrapped tubular shape
5. 1084°C welding copper-brazed
6. Examination
7. Air tightness test
8. Coating. We have copper coated, white zinc coated,color zinc coated,olive green zinc coated,galfan coated brake tubing
9. Customized shape
10. Packing