通用冷弯开口型钢(摘自GB/T 6723-1986)
型别与代号
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名称
|
代号
|
|
冷弯等边角钢
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见图－1
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冷弯不等边角钢
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见图－2
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冷弯等边槽钢
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见图－3
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冷弯不等边槽钢
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见图－4
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冷弯内卷边槽钢
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见图－5
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冷弯外卷边槽钢
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见图－6
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冷弯乙形钢
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见图－7
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冷弯卷边乙形钢
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见图－8
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冷弯等边角钢的尺寸规格
注：1.本标准各表中截面面积和参考数值系按内圆弧半径等于壁厚计算的。
2.表中理论重量是按密度为7.85g/cm^3计算的。
|
名称
|
尺寸/mm
|
理论重量/(kg/m)
|
截面面积/cm^2
|
|
b×b×t
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b
|
t
|
|
20×20×1.2
|
20
|
1.2
|
0.354
|
0.451
|
|
20×20×1.6
|
20
|
1.6
|
0.463
|
0.589
|
|
20×20×2.0
|
20
|
2.0
|
0.566
|
0.721
|
|
25×25×1.6
|
25
|
1.6
|
0.588
|
0.749
|
|
25×25×2.0
|
25
|
2.0
|
0.723
|
0.921
|
|
25×25×2.5
|
25
|
2.5
|
0.885
|
1.127
|
|
25×25×3.0
|
25
|
3.0
|
1.039
|
1.323
|
|
30×30×1.6
|
30
|
1.6
|
0.714
|
0.909
|
|
30×30×2.0
|
30
|
2.0
|
0.880
|
1.121
|
|
30×30×2.5
|
30
|
2.5
|
1.081
|
1.377
|
|
30×30×3.5
|
30
|
3.0
|
1.274
|
1.623
|
|
40×40×1.6
|
40
|
1.6
|
0.965
|
1.229
|
|
40×40×2.0
|
40
|
2.0
|
1.194
|
1.521
|
|
40×40×2.5
|
40
|
2.5
|
1.473
|
1.877
|
|
40×40×3.0
|
40
|
3.0
|
1.745
|
2.223
|
|
40×40×4.0
|
40
|
4.0
|
2.266
|
2.886
|
|
50×50×2.0
|
50
|
2.0
|
1.508
|
1.921
|
|
50×50×2.5
|
50
|
2.5
|
1.866
|
2.377
|
|
50×50×3.0
|
50
|
3.0
|
2.216
|
2.823
|
|
50×50×4.0
|
50
|
4.0
|
2.894
|
3.686
|
|
60×60×2.0
|
60
|
2.0
|
1.822
|
2.321
|
|
60×60×2.5
|
60
|
2.5
|
2.258
|
2.877
|
|
60×60×3.0
|
60
|
3.0
|
2.687
|
3.423
|
|
60×60×4.0
|
60
|
4.0
|
3.522
|
4.486
|
|
70×70×3.0
|
70
|
3.0
|
3.158
|
4.023
|
|
70×70×4.0
|
70
|
4.0
|
4.150
|
5.286
|
|
70×70×5.0
|
70
|
5.0
|
5.110
|
6.510
|
|
80×80×3.0
|
80
|
3.0
|
3.629
|
4.623
|
|
80×80×4.0
|
80
|
4.0
|
4.778
|
6.086
|
|
80×80×5.0
|
80
|
5.0
|
5.895
|
7.510
|
|
80×80×6.0
|
80
|
6.0
|
6.982
|
8.895
|
|
100×100×3.0
|
100
|
3.0
|
4.571
|
5.823
|
|
100×100×4.0
|
100
|
4.0
|
6.034
|
7.686
|
|
100×100×5.0
|
100
|
5.0
|
7.765
|
9.510
|
|
100×100×6.0
|
100
|
6.0
|
8.866
|
11.295
|
冷弯不等边角钢的尺寸规格
|
名称
|
尺寸/mm
|
理论重量/(kg/m)
|
截面面积/cm^2
|
|
B×b×t
|
B
|
b
|
t
|
|
25×15×2.0
|
25
|
15
|
2.0
|
0.566
|
0.721
|
|
25×15×2.5
|
25
|
15
|
2.5
|
0.688
|
0.877
|
|
25×15×3.0
|
25
|
15
|
3.0
|
0.803
|
1.023
|
|
30×20×2.0
|
30
|
20
|
2.0
|
0.732
|
0.921
|
|
30×20×2.5
|
30
|
20
|
2.5
|
0.885
|
1.127
|
|
30×20×3.0
|
30
|
20
|
3.0
|
1.039
|
1.323
|
|
35×20×2.0
|
35
|
20
|
2.0
|
0.802
|
1.021
|
|
35×20×2.5
|
35
|
20
|
2.5
|
0.983
|
1.252
|
|
35×20×3.0
|
35
|
20
|
3.0
|
1.156
|
1.473
|
|
40×25×2.5
|
40
|
25
|
2.5
|
1.179
|
1.502
|
|
40×25×3.0
|
40
|
25
|
3.0
|
1.392
|
1.773
|
|
50×30×2.5
|
50
|
30
|
2.5
|
1.473
|
1.877
|
|
50×30×3.0
|
50
|
30
|
3.0
|
1.745
|
2.223
|
|
50×30×4.0
|
50
|
30
|
4.0
|
2.266
|
2.886
|
|
60×40×2.5
|
60
|
40
|
2.5
|
1.866
|
2.337
|
|
60×40×3.0
|
60
|
40
|
3.0
|
2.216
|
2.823
|
|
60×40×4.0
|
60
|
40
|
4.0
|
2.894
|
3.686
|
|
70×40×3.0
|
70
|
40
|
3.0
|
2.452
|
3.123
|
|
70×40×4.0
|
70
|
40
|
4.0
|
3.208
|
4.086
|
|
80×50×3.0
|
80
|
50
|
3.0
|
2.923
|
3.723
|
|
80×50×4.0
|
80
|
50
|
4.0
|
3.836
|
4.886
|
|
100×60×3.0
|
100
|
60
|
3.0
|
3.629
|
4.623
|
|
100×60×4.0
|
100
|
60
|
4.0
|
4.778
|
6.068
|
|
100×60×5.0
|
100
|
60
|
5.0
|
5.895
|
7.510
|
|
120×80×4.0
|
120
|
80
|
4.0
|
6.034
|
7.686
|
|
120×80×5.0
|
120
|
80
|
5.0
|
7.465
|
9.510
|
|
120×80×6.0
|
120
|
80
|
6.0
|
8.866
|
11.295
|
冷弯等边槽钢的尺寸规格
|
名称
|
尺寸/mm
|
理论重量/(kg/m)
|
截面面积/cm^2
|
|
H×b×t
|
H
|
B
|
t
|
|
20×10×1.5
|
20
|
10
|
1.5
|
0.401
|
0.511
|
|
20×10×2.0
|
20
|
10
|
2.0
|
0.505
|
0.643
|
|
20×10×2.5
|
20
|
10
|
2.5
|
0.593
|
0.755
|
|
30×10×1.5
|
30
|
10
|
1.5
|
0.519
|
0.661
|
|
30×10×2.0
|
30
|
10
|
2.0
|
0.662
|
0.843
|
|
30×10×2.5
|
30
|
10
|
2.5
|
0.789
|
1.005
|
|
30×30×3.0
|
30
|
30
|
3.0
|
1.843
|
2.347
|
|
40×20×2.0
|
40
|
20
|
2.0
|
1.133
|
1.443
|
|
40×20×2.5
|
40
|
20
|
2.5
|
1.378
|
1.775
|
|
40×20×3.0
|
40
|
20
|
3.0
|
1.607
|
2.047
|
|
50×30×2.0
|
50
|
30
|
2.0
|
1.604
|
2.043
|
|
50×30×2.5
|
50
|
30
|
2.5
|
1.967
|
2.505
|
|
50×30×3.0
|
50
|
30
|
3.0
|
2.314
|
2.947
|
|
50×50×3.0
|
50
|
50
|
3.0
|
3.256
|
4.147
|
|
60×30×2.5
|
60
|
30
|
2.5
|
2.163
|
2.755
|
|
60×30×3.0
|
60
|
30
|
3.0
|
2.549
|
3.247
|
|
80×40×2.5
|
80
|
40
|
2.5
|
2.948
|
3.755
|
|
80×40×3.0
|
80
|
40
|
3.0
|
3.491
|
4.447
|
|
80×40×4.0
|
80
|
40
|
4.0
|
4.532
|
5.773
|
|
100×50×3.0
|
100
|
50
|
3.0
|
4.433
|
5.647
|
|
100×50×4.0
|
100
|
50
|
4.0
|
5.788
|
7.373
|
|
120×60×3.0
|
120
|
60
|
3.0
|
5.375
|
6.847
|
|
120×60×4.0
|
120
|
60
|
4.0
|
7.044
|
8.973
|
|
140×60×3.0
|
140
|
60
|
3.0
|
5.846
|
7.447
|
|
140×60×4.0
|
140
|
60
|
4.0
|
7.672
|
9.773
|
|
140×60×5.0
|
140
|
60
|
5.0
|
9.436
|
12.021
|
|
160×60×3.0
|
160
|
60
|
3.0
|
6.317
|
8.047
|
|
160×60×4.0
|
160
|
60
|
4.0
|
8.300
|
10.573
|
|
160×60×5.0
|
160
|
60
|
5.0
|
10.221
|
13.021
|
|
160×80×3.0
|
160
|
80
|
3.0
|
7.259
|
9.247
|
|
160×80×4.0
|
160
|
80
|
4.0
|
9.556
|
12.173
|
|
160×80×5.0
|
160
|
80
|
5.0
|
11.791
|
15.021
|
|
180×80×4.0
|
180
|
80
|
4.0
|
10.184
|
12.973
|
|
180×80×5.0
|
180
|
80
|
5.0
|
12.576
|
16.021
|
|
200×80×4.0
|
200
|
80
|
4.0
|
10.812
|
13.773
|
|
200×80×5.0
|
200
|
80
|
5.0
|
13.361
|
17.021
|
|
200×80×6.0
|
200
|
80
|
6.0
|
15.849
|
20.190
|
