1.99.9% pure copper layer & Q235 low carbon steel core;
2. ensure copper thickness;
3. accessories available;

1	Visual examination	clean, no cracks, no burrs, clear mark
2	Verifications of dimension	Length: ≤ +5mm diameter: ≤+0.1mm
3	Thickness of average copper coating	≥0.254(according to requests)
4	Bending test	achieving permanent angular bent of 30 degrees, no pits, no cracks.
5	Resistance rate(Ω)	resistance rate ≤ 0.059 Ω. mm sq./m
6	Elongation	≥20%
7	Tensile strength	≥570N/mm sq.
8	Yield point	≥300N /mm sq.
9	Anticorrosion	dipped in the 10% nitric acid at least 90hours and loss of corruption 15%