721610U、I、H、L或T型材, 仅热轧、热拉拔或挤压, 高度<80毫米

U, I or H sections, not further worked than hot-rolled, hot-drawn or extruded, of a height of less than 80 mm L or T sections, not further worked than hotrolled, hot-drawn or extruded, of a height of less than 80 mm.