... 3 kg, 5 kg, 7 kg, 15 kg, 20kgTensile strength: 1000 N/mm2, 900 N/mm2, 500 N/mm2, ... 1: including No nudity , No coating, No alloy of pure Copper Wire, the surface without oxidation, do not ... 2 Copper Wire No. 2 Copper Wire without alloy of Copper scrap line, contain sundries, Copper content is 96% ... contain too much lead is changed and tin mineralization of copper wire, welding wire, brass and bronze line, ...