Copper coated double wall tube

Product Category:Copper coated double wall tube

Double wall brazed tube is coated copper on the both sides of the steel strip,and brazed after coiled 720°.

Main characteristics:

1.Fine inside cleanness, high strength and nice elongation. 
2.Good foundation for after-process, anti-leakage.
3.Anti-high pressure explosion and excellent anti-corrosion property after surface treatment. The tubes can be provided in coils or cut-to-length with any length according to the requirements from customers.
4.Suitable for automotive brake tube, power steering tube and so on.

 

Mechanical property

 

Item	Standard
Tensile strength/Mpa	≥290 no fold, cracking or crackle
Yield strength/Mpa	≥200 no cracking, breaking, or other obvious flaws
Elongation (%)	≥25 no destructive eddy detecting, no lamilation, good welding quality for overlap.
Flaring	no cracking, breaking, or other obvious flaws
Inside cleanliness	≤0.16g/㎡

 

Size & Tolerance

 

Item	OD	Wall thickness
1	4.76mm±0.05mm	0.7mm±0.08mm
2	6mm ±0.08mm	0.7mm±0.08mm
3	6.35mm±0.08mm	0.7mm±0.08mm
4	8.00mm±0.08mm	0.7mm±0.08mm
5	9.52mm±0.1mm	0.7mm±0.08mm
6	10.00 mm±0.1mm	0.7mm±0.08mm 1.0mm±0.08mm
7	12.00mm±0.1mm	0.7mm±0.08mm 1.0mm±0.08mm

 

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