Materials: Core and low carbon steel Q235A (GB13013-91)
Process: Clad or copper electroplating
Chemical compositions:
C: 0.18%
Mn: 0.28%
Si: 0.009%
P: 0.031%
S: 0.038%
Copper: 99.9% pure copper qualified
Copper thicknesses: 0.127, 0.254, 0.33, 0.5 and 1.0mm

Tensile strength: 400 to 500mPa
Min yield point: 290 to 300mPa
Minimum elongation: 32 to 38% in 200mm gauge length
Use fixed number of year: Above 30 years cannot be influenced by the weather
Standard: K2010-226
Size: 20*3,000mm