Explanatory notes
… sections, not further worked than hot‑rolled, hot‑drawn or extruded, of a height of less than 80 mm - L … are usually produced by hot‑rolling, hot‑drawing, hot‑extrusion or hot-forging or forging blooms or billets. The … ‑ U , I or H sections : the distance between the external surfaces of the two parallel planes. ‑ L …