精轧螺纹钢理论重量表 Nominal Diameter mm Dv mm Dh mm H mm B mm L mm Nominal sectional area mm2 Nominal Weight Kg/M 15 15 15 1 4.5 10 176 1.47 18 18 18 1.2 4 9 254.5 2.11 20 20 20 1.3 4.8 10 314 2.47 25 25 25 1.6 6 12 490.9 4.1 32 32 32 2.0 7 16 804.2 6.65 36 36 36 2.2 8 18 1018 8.41 40 40 40 2.5 8 20 1256.6 10.34 50 50 50 3.0 9 24 1963.5 16.28