Copper wire rod is in line with American Standard ASTM B 49-10.   Wire rod has equal cross section over its entire length. The cross section is round, diameter of 8.0 mm. Extreme deviations of diameter and ovality of copper rod do not exceed ± 0.38 mm for categories А and B, and ± 0.5 mm for category C.

The entire length of the wire rod should have a clean, smooth surface without cracks and foreign inclusions. Certain surface defects (overlaps, cuts, scratch marks, scratches, burrs, dimples, slivers) not exceeding in depth and height for wire rod category A — 0.1 mm, category B — 0.2 mm, category C — 0.3 mm