热轧等边角钢截面尺寸、截面面积及理论重量表表中所对应的参数见下图所示（其中参数如需查询请参阅《热轧型钢》GB/T706-2016）。说明：b——边宽度；d——边厚度；r——内圆弧半径；r1——边端圆弧半径；Z0——重心距离等边角钢截面尺寸、截面面积及理论重量表截面尺寸(mm)型号b220d34343433.636453440454.5453554.53.5r截面面积(cm2)1.1321.4591.4321.8591.7492.2762.1092.7563.3822.3593.0863.7922.659理论重量(kg/m)0.8891.151.121.461.371.791.662.162.651.852.422.982.09外表面积(m2/m)0.0780.0770.0980.0970.1170.1170.1410.1410.1410.1570.1570.1560.1772.5253301截面尺寸(mm)型号bd4563550456345.65656785660678456.363678104770567876.565.5r截面面积(cm2)3.4864.2925.0772.9713.8974.8035.6883.3434.3905.4156.427.4048.3675.8296.9147.9779.024.9786.1437.2888.4129.51511.665.5706.8768.1609.424理论重量(kg/m)2.743.373.992.333.063.774.462.6243.4464.2515.045.816.5684.585.436.267.083.914.825.726.607.479.154.375.406.417.40外表面积(m2/m)0.1770.1760.1760.1970.1970.1960.1960.2210.2200.2200.2200.2190.2190.2360.2350.2350.2350.2480.2480.2470.2470.2470.2460.2750.2750.2750.2752截面尺寸(mm)型号bd8567.575789105688078910679908910126781010091012141612109r截面面积(cm2)10.677.4128.79710.16011.50312.8314.137.9129.39710.86012.3013.7315.1310.6412.3013.9415.5717.1720.3111.9313.8015.6417.4619.2622.8026.2629.63理论重量(kg/m)8.375.826.917.989.0310.111.16.217.388.539.6610.811.98.359.6610.912.213.515.99.3710.812.313.715.117.920.623.3外表面积(m2/m)0.2740.2950.2940.2940.2940.2940.2930.3150.3140.3140.3140.3140.3130.3540.3540.3530.3530.3530.3520.3930.3930.3930.3920.3920.3910.3910.3903截面尺寸(mm)型号bd781111010121481012.512512141610141401214168101515012141516101616012141612181801416161414r截面面积(cm2)15.2017.2421.2625.2029.0619.7524.3728.9133.3737.7427.3732.5137.3742.5423.7529.3734.9140.3743.0645.7431.5037.4443.3049.0742.2448.9055.47理论重量(kg/m)11.913.516.719.822.815.519.122.726.229.621.525.529.533.418.623.127.431.733.835.924.729.434.038.533.238.443.5外表面积(m2/m)0.4330.4330.4320.4310.4310.4920.4910.4910.4900.4890.5510.5510.5500.5490.5920.5910.5910.5900.5900.5890.6300.6300.6290.6290.7100.7090.7094截面尺寸(mm)型号bd181416202001820241618222202022242618202224252502628303235项目242118r截面面积(cm2)61.9654.6462.0169.3076.5190.6668.6776.7584.7692.68100.5108.387.8497.05106.2115.2124.2133.0141.8150.5163.4理论重量(kg/m)48.642.948.754.460.171.253.960.366.572.878.985.069.076.283.390.497.5104111118128外表面积(m2/m)0.7080.7880.7880.7870.7870.7850.8660.8660.8650.8650.8640.8640.9850.9840.9830.9830.9820.9820.9810.9810.980允许偏差角钢尺寸、外形及允许偏差b≤56边宽度(b)56200b≤5656200重量及允许偏差±3.5±0.4±0.6±0.7±1.0±1.4型钢重量允许偏差应不超过±5%，理论重量按密度7.85g/cm3计算。重量偏差（%）按下式计算。重量允许偏差适用于同一尺寸且质量超过1吨的一批，当一批同一尺寸的质量不大于1吨但根数大于10根时也适用。重量偏差=（实际重量-理论重量）÷理论重量×100%等边角钢的截面面积计算公式：d(2b-d)+0.215(r2-2r12)规格表示方法：等边角钢：“∠”与边宽度值×边宽度值×边厚度值如：∠200×200×24（简记为∠200×24）。表面质量型钢表面不应有裂缝、折叠、结疤、分层和夹杂。型钢表面允许有局部发纹、凹坑、麻点、划痕和氧化铁皮压入等缺陷存在，但不应超出型钢尺寸深度的五倍，清除后的型钢尺寸不应超出尺寸的允许偏差。型钢端部不应有大于5mm的毛刺。6
