热轧钢筋 尺寸形状质量和公差

[中文适用范围]： 本文件规定了公制系列热轧钢棒的尺寸、形状、质量和公差。本文件适用于：a) 直径5.5 mm至400 mm的热轧圆棒；b) 边长5.5 mm至300 mm的热轧方棒；c) 厚度3 mm至60 mm、宽度10 mm至200 mm的热轧扁棒；d) 对边距离8 mm至70 mm的热轧六角棒；e) 对边距离16 mm至40 mm的热轧八角棒。注：宽扁钢在实际应用中可归入扁棒范畴。 [外文原描述]： This document specifies dimensions, shape, mass and tolerances of metric series hot-rolled steel bars. This document is applicable to: hot-rolled round bars with diameter of 5,5 mm up to 400 mm; hot-rolled square bars with side length of 5,5 mm up to 300 mm; hot-rolled flat bars with thickness of 3 mm up to 60 mm and width of 10 mm up to 200 mm; hot-rolled hexagonal bars with distance across opposite flats of 8 mm up to 70 mm; hot-rolled octagonal bars with distance across opposite flats of 16 mm up to 40 mm. NOTE Wide flats can be covered under flat bars for practical reasons.