本文件规定了直径在1？范围内的锻铝和铝合金拉制圆钢和线材的形状和尺寸公差毫米到100mm包括在内。本文件中规定的直径公差为对称正负公差。 对于电线，本文件不适用于电气、焊接和航空用途。 对于拉拔钢筋，4.1至4.5适用，仅4.1和4.2适用于拉拔钢丝。

This document specifies tolerances on form and dimensions for wrought aluminium and aluminium alloy drawn round bars and wires having diameters in the range of from 1？mm to 100？mm inclusive. The tolerances on diameter specified in this document are symmetric plus and minus tolerances. For wires, this document does not apply to electrical, welding and aeronautical purposes. For drawn bars, 4.1 to 4.5 apply, and only 4.1 and 4.2 apply to drawn wires.