国标《热轧型钢》GB/T 706-2016替代GB/T 706-2008对角钢截面尺寸、截面面积及理论重量参数等数值进行了调整,本表根据最新标准进行了修订,见《等边角钢截面尺寸、截面面积、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)。

热轧等边角钢(摘自GB/T 706-2016)

等边角钢截面尺寸、截面面积及理论重量表

热扎等边角钢及不等边角钢截面尺寸、截面面积及理论重量表插图
型号截面尺寸(mm)截面面积(cm²)理论重量(kg/m)外表面积(m²/m)
bdr
22033.51.1320.8890.078
41.4591.150.077
2.52531.4321.120.098
41.8591.460.097
33034.51.7491.370.117
42.2761.790.117
3.63632.1091.660.141
42.7562.160.141
53.3822.650.141
440352.3591.850.157
43.0862.420.157
53.7922.980.156
4.545352.6592.090.177
43.4862.740.177
54.2923.370.176
65.0773.990.176
55035.52.9712.330.197
43.8973.060.197
54.8033.770.196
65.6884.460.196
5.656363.3432.6240.221
44.3903.4460.220
55.4154.2510.220
66.425.040.220
77.4045.810.219
88.3676.5680.219
66056.55.8294.580.236
66.9145.430.235
77.9776.260.235
89.027.080.235
6.363474.9783.910.248
56.1434.820.248
67.2885.720.247
78.4126.600.247
89.5157.470.247
1011.669.150.246
770485.5704.370.275
56.8765.400.275
68.1606.410.275
79.4247.400.275
810.678.370.274
7.575597.4125.820.295
68.7976.910.294
710.1607.980.294
811.5039.030.294
912.8310.10.294
1014.1311.10.293
88057.9126.210.315
69.3977.380.314
710.8608.530.314
812.309.660.314
913.7310.80.314
1015.1311.90.313
99061010.648.350.354
712.309.660.354
813.9410.90.353
915.5712.20.353
1017.1713.50.353
1220.3115.90.352
1010061211.939.370.393
713.8010.80.393
815.6412.30.393
917.4613.70.392
1019.2615.10.392
1222.8017.90.391
1426.2620.60.391
1629.6323.30.390
11110715.2011.90.433
817.2413.50.433
1021.2616.70.432
1225.2019.80.431
1429.0622.80.431
12.512581419.7515.50.492
1024.3719.10.491
1228.9122.70.491
1433.3726.20.490
1637.7429.60.489
141401027.3721.50.551
1232.5125.50.551
1437.3729.50.550
1642.5433.40.549
1515081423.7518.60.592
1029.3723.10.591
1234.9127.40.591
1440.3731.70.590
1543.0633.80.590
1645.7435.90.589
16160101631.5024.70.630
1237.4429.40.630
1443.3034.00.629
1649.0738.50.629
181801242.2433.20.710
1448.9038.40.709
1655.4743.50.709
1861.9648.60.708
20200141854.6442.90.788
1662.0148.70.788
1869.3054.40.787
2076.5160.10.787
2490.6671.20.785
22220162168.6753.90.866
1876.7560.30.866
2084.7666.50.865
2292.6872.80.865
24100.578.90.864
26108.385.00.864
25250182487.8469.00.985
2097.0576.20.984
22106.283.30.983
24115.290.40.983
26124.297.50.982
28133.01040.982
30141.81110.981
32150.51180.981
35163.41280.980

角钢尺寸、外形及允许偏差

项目允许偏差
边宽度(b)b≤56±0.8
56<b≤90±1.2
90<b≤140±1.8
140<b≤200±2.5
b>200±3.5
边厚度(d)b≤56±0.4
56<b≤90±0.6
90<b≤140±0.7
140<b≤200±1.0
b>200±1.4

重量及允许偏差

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。

热轧不等边角钢(摘自GB/T 706-2016)

不等边角钢截面尺寸、截面面积及理论重量表

热扎等边角钢及不等边角钢截面尺寸、截面面积及理论重量表插图1
型号尺寸(mm)截面面积   (cm2)理论重量  (kg/m)外表面积 (m2/m)
Bbdr
2.5/1.6251633.51.1620.910.080
41.4991.180.079
3.2/2322031.4921.170.102
41.9391.520.101
4/2.54025341.8901.480.127
42.4671.940.127
4.5/2.84528352.1491.690.143
42.8062.200.143
5/3.2503235.52.4311.910.161
43.1772.490.160
5.6/3.65636362.7432.150.181
43.5902.820.180
54.4153.470.180
6.3/46340474.0583.190.202
54.9933.920.202
65.9084.640.201
76.8025.340.201
7/4.5704547.54.5533.570.226
55.6094.400.225
66.6445.220.225
77.6586.010.225
7.5/57550586.1264.810.245
67.2605.700.245
89.4677.430.244
1011.599.100.244
8/5805056.3755.000.255
67.5605.930.255
78.7246.850.255
89.8677.750.254
9/5.69056597.2125.660.287
68.5576.720.286
79.8817.760.286
811.188.780.286
10/6.3100636109.6187.550.320
711.118.720.320
812.589.880.319
1015.4712.100.319
10/81008061010.648.350.354
712.309.660.354
813.9410.90.353
1017.1713.50.353
11/711070610.648.350.354
712.309.660.354
813.9410.90.353
1017.1713.50.353
12.5/81258071114.1011.10.403
815.9912.60.403
1019.7115.50.402
122.3318.30.402
14/91409081218.0414.20.453
1022.2617.50.452
1226.4020.70.451
1430.4623.90.451
15/915090818.8414.80.473
1022.2618.30.472
1227.6021.70.471
1431.8625.00.471
1533.9525.70.471
1636.0328.30.470
16/10160100101325.3219.90.512
1230.0523.60.511
1434.7127.20.510
1639.2830.80.510
18/11180110101428.3722.30.571
1233.7126.50.571
1438.9730.60.570
1644.1434.60.569
20/12.52001251237.9129.80.641
1443.8734.40.640
1649.7439.00.639
1855.5343.60.639

角钢尺寸、外形及允许偏差

项目允许偏差
边宽度(B,b)b*≤56±0.8
56<b*≤90±1.2
90<b*≤140±1.8
140<b*≤200±2.5
b*>200±3.5
边厚度(d)b*≤56±0.4
56<b*≤90±0.6
90<b*≤140±0.7
140<b*≤200±1.0
b*>200±1.4

注明*不等边角钢按长边宽度。

重量及允许偏差

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%

不等边角钢的截面面积计算公式:

d(B+b-d)+0.215(r²-2r1²)

规格表示方法

不等边角钢:“∠”与长边宽度值×短边宽度值×边厚度值
如:∠160×100×16。

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。

参考标准规范

GB/T 706-2016 热轧型钢右键单击图标热扎等边角钢及不等边角钢截面尺寸、截面面积及理论重量表插图2可在新窗口中打开文档


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