Model: | LHE |
---|---|
Brand: | LIHE |
Origin: | Made In China |
Category: | Security & Protection / Other Security & Protection |
Label: | copper ground rod , earth rod , ground electrode |
Price: |
US $5
/ pc
|
Min. Order: | 10 pc |
Last Online:10 Oct, 2014 |
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 |
≥470N/mm sq. |
8 |
Yield point |
≥300N /mm sq. |
9 |
Anticorrosion |
dipped in the 10% nitric acid at least 90hours and loss of corruption 15% |