| 详细介绍： 热轧圆钢和方钢的尺寸规格
直径d
(或边长a)
／mm
|
精度组别
|
|
截面面积／cm²
|
理论质量(kg／m)
|
|
1组
|
2组
|
3组
|
|
圆 钢
|
方 钢
|
圆 钢
|
方 钢
|
|
允许偏差／mm
|
|
5.5
|
±0.20
|
±0.30
|
±0.40
|
..2375
|
0.30
|
0.186
|
0.237
|
|
6
|
0.2827
|
0.36
|
0.222
|
0.283
|
|
6.5
|
0.3318
|
0.42
|
0.260
|
0.332
|
|
7
|
0.3848
|
0.49
|
0.302
|
0.385
|
|
8
|
±0.25
|
±0.35
|
±0.40
|
0.5077
|
0.64
|
0.395
|
0.502
|
|
9
|
0.6362
|
0.81
|
0.499
|
0.636
|
|
10
|
0.7854
|
1.0
|
0.617
|
0.785
|
|
*11
|
0.9503
|
1.21
|
0.746
|
0.95
|
|
12
|
1.131
|
1.44
|
0.888
|
1.13
|
|
13
|
1.327
|
1.69
|
1.04
|
1.33
|
|
14
|
1.539
|
1.96
|
1.21
|
1.54
|
|
15
|
1.767
|
2.25
|
1.39
|
1.77
|
|
16
|
2.011
|
2.56
|
1.58
|
2.01
|
|
17
|
2.270
|
2.89
|
1.78
|
2.27
|
|
18
|
2.545
|
3.24
|
2.00
|
2.54
|
|
19
|
2.835
|
3.61
|
2.23
|
2.83
|
|
20
|
3.142
|
4.00
|
2.47
|
3.14
|
|
21
|
±. 30
|
±. 40
|
±. 50
|
3.464
|
4.41
|
2.72
|
3.46
|
|
22
|
3.801
|
4.84
|
2.98
|
3.80
|
|
*23
|
4.155
|
5.29
|
3.26
|
4.15
|
|
24
|
4.524
|
5.76
|
3.55
|
4.52
|
|
25
|
4.909
|
6.25
|
3.85
|
4.91
|
|
26
|
5.309
|
6.76
|
4.17
|
5.31
|
|
*27
|
5.726
|
7.29
|
4.49
|
5.72
|
|
28
|
6.158
|
7.84
|
4.83
|
6.15
|
|
*29
|
6.605
|
8.41
|
5.18
|
6.60
|
|
30
|
7.069
|
9.00
|
5.55
|
7.06
|
|
*31
|
±0.40
|
±0.50
|
±0.60
|
7.548
|
9.61
|
5.93
|
7.54
|
|
32
|
8.042
|
10.24
|
6.31
|
8.04
|
|
*33
|
8.553
|
10.89
|
6.71
|
8.55
|
|
34
|
9.097
|
11.56
|
7.13
|
9.07
|
|
*35
|
9.621
|
12.25
|
7.55
|
9.62
|
|
36
|
10.18
|
12.96
|
7.99
|
10.2
|
|
38
|
11.34
|
14.44
|
8.90
|
11.3
|
|
40
|
12.57
|
16.00
|
9.86
|
12.6
|
|
42
|
13.85
|
17.64
|
10.9
|
13.8
|
|
45
|
15.90
|
20.25
|
12.5
|
15.9
|
|
48
|
18.10
|
23.04
|
14.2
|
18.1
|
|
50
|
19.64
|
25.00
|
15.4
|
19.6
|
|
53
|
±0.60
|
±. 70
|
±0.80
|
22.06
|
28.09
|
17.3
|
22..
|
|
*55
|
23.76
|
30.25
|
18.6
|
23.7
|
|
56
|
24.63
|
31.36
|
19.3
|
24.6
|
|
*58
|
26.42
|
33.64
|
20.7
|
26.4
|
|
60
|
±. 60
|
±. 70
|
±0.80
|
28.27
|
36.00
|
22.2
|
28.3
|
|
63
|
31.17
|
39.69
|
24.5
|
31.2
|
|
*65
|
33.18
|
42.25
|
26..
|
33.2
|
|
*68
|
36.32
|
46.24
|
28.5
|
36.3
|
|
70
|
38.48
|
49.00
|
30.2
|
38.5
|
|
75
|
44.18
|
56.25
|
34.7
|
44.2
|
|
80
|
50.27
|
64.00
|
39.5
|
50.2
|
|
85
|
±. 9
|
±1.0
|
±1.1
|
56.75
|
72.25
|
44.5
|
56.7
|
|
90
|
63.62
|
81.00
|
49.9
|
63.6
|
|
95
|
70.88
|
90.25
|
55.6
|
70.8
|
|
100
|
78.54
|
100.00
|
61.7
|
78.5
|
|
105
|
86.59
|
110.25
|
68.0
|
86.5
|
|
110
|
95.03
|
121.00
|
74.6
|
95.0
|
|
115
|
±1.2
|
±1.3
|
±1.4
|
103.82
|
132.26
|
81.5
|
104
|
|
120
|
113.10
|
144.00
|
88.8
|
113
|
|
125
|
122.72
|
156.25
|
96.3
|
123
|
|
130
|
132.73
|
169.00
|
104
|
133
|
|
140
|
153.94
|
196.00
|
121
|
154
|
|
150
|
176.72
|
225.00
|
139
|
177
|
|
160
|
-
|
-
|
±2.0
|
201.06
|
256.00
|
158
|
201
|
|
170
|
226.98
|
289.00
|
178
|
227
|
|
180
|
254.47
|
324.00
|
200
|
254
|
|
190
|
283.53
|
361.00
|
223
|
283
|
|
200
|
-
|
-
|
±2.5
|
314.16
|
400.00
|
247
|
314
|
|
220
|
380.13
|
-
|
298
|
-
|
|
250
|
490.88
|
-
|
385
|
-
|
|
注：1.表中的理论质量是按钢的密度为7.85g／crn3计算的。
2.表中带“*”号的规格，不推荐使用。
2.热轧六角钢和八角钢（GB／T705-1989）
热轧六角钢和八角钢的尺寸规格
对边距离
s／mm
|
允许偏差／mm
|
截面面积／cm2
|
理论质量(kg／m)
|
1组
|
2组
|
3组
|
六角钢
|
八角钢
|
六角钢
|
八角钢
|
8
|
±0.25
|
±0.35
|
±0.40
|
0.5543
|
|
0.435
|
|
9
|
0.7015
|
|
0.551
|
|
10
|
0.866
|
|
0.680
|
|
11
|
1.048
|
|
0.823
|
|
12
|
1.247
|
|
0.979
|
|
13
|
1.464
|
|
1.15
|
|
14
|
1.697
|
|
1.33
|
|
15
|
1.949
|
|
1.53
|
|
16
|
2.217
|
2.120
|
1.74
|
1.66
|
17
|
2.503
|
|
1.96
|
|
18
|
2.806
|
2.683
|
2.20
|
2.16
|
19
|
3.126
|
|
2.45
|
|
20
|
3.464
|
3.312
|
2.72
|
2.60
|
21
|
±0.30
|
±0.40
|
±0.50
|
3.819
|
|
3.00
|
|
22
|
4.192
|
4.008
|
3.29
|
3.15
|
23
|
4.581
|
|
3.60
|
|
24
|
4.988
|
|
3.92
|
|
25
|
5.413
|
5.175
|
4.25
|
4.06
|
26
|
5.854
|
|
4.60
|
|
27
|
6.314
|
|
4.96
|
|
28
|
6.790
|
6.492
|
5.33
|
5.10
|
30
|
7.794
|
7.452
|
6.12
|
5.85
|
32
|
±0.40
|
±0.50
|
±0.60
|
8.868
|
8.479
|
6.96
|
6.66
|
34
|
10.011
|
9.572
|
7.86
|
7.51
|
36
|
11.223
|
10.731
|
8.81
|
8.42
|
38
|
12.505
|
11.956
|
9.82
|
9.39
|
40
|
13.86
|
13.25
|
10.88
|
10.40
|
42
|
±0.40
|
±0.50
|
±0.60
|
15.28
|
|
11.99
|
|
45
|
17.54
|
|
13.77
|
|
48
|
19.95
|
|
15.66
|
|
50
|
21.65
|
|
17.00
|
|
53
|
24.33
|
|
19.10
|
|
56
|
27.16
|
|
21.32
|
|
58
|
29.13
|
|
22.87
|
|
60
|
±0.60
|
±0.70
|
±0.80
|
31.18
|
|
24.50
|
-
|
63
|
34.37
|
|
26.98
|
|
65
|
36.59
|
|
28.72
|
|
68
|
40.04
|
|
31.43
|
|
70
|
42.43
|
|
33.30
|
|
注：1.表列理论质量系按密度7.85g/cm3计算的。
2.钢的通常长度为：普通钢3-8m，优质钢2-6m。
3.银亮钢（GB／T3207-1988）
(1)尺寸规格
银亮钢的尺寸规格
圆钢直径
d/mm
|
截面面积
/mm2
|
理论质量
/ (kg/1000m)
|
圆钢直径
d
|
截面面积
/mm2
|
理论质量
/(kg/1000m)
|
0 60
|
0.2827
|
2.219
|
1.50
|
1.767
|
13.87
|
0 63
|
0.3117
|
2.444
|
1.60
|
2.001
|
15.78
|
0 70
|
0.3848
|
3.024
|
1.80
|
2.545
|
19.94
|
0.80
|
0.5027
|
3.95
|
2 00
|
3.142
|
24.65
|
0 90
|
0.6362
|
4.99
|
2.20
|
3.801
|
29.83
|
1.00
|
0.7854
|
6.17
|
2 50
|
4.909
|
38.54
|
1.10
|
0.9503
|
7 46
|
2.80
|
6.158
|
48.36
|
1.20
|
1.131
|
8.88
|
3.00
|
7.069
|
55.50
|
1.40
|
1.539
|
12.08
|
3.20
|
8.042
|
63.11
|
3.50
|
9.621
|
75.52
|
24.0
|
452.4
|
3550
|
4.00
|
12.57
|
98.6
|
25.0
|
490.9
|
3850
|
4.50
|
15.90
|
124.8
|
26.0
|
530.9
|
4170
|
5.00
|
19.63
|
154.2
|
28.0
|
615.8
|
4830
|
5.50
|
23.76
|
187.2
|
|
|
|
6.00
|
28.27
|
221.9
|
30.0
|
706.9
|
5550
|
6.30
|
31.17
|
244.4
|
32.0
|
804.2
|
6310
|
7.0
|
38.48
|
302.1
|
33.0
|
855.3
|
6710
|
7.5
|
44.18
|
347
|
34.0
|
907.9
|
7130
|
8.0
|
50.27
|
395
|
35.0
|
962.1
|
7552
|
8.5
|
56.75
|
445
|
36.0
|
1017.8
|
7990
|
9.0
|
63.62
|
4919
|
38.0
|
1134
|
8900
|
9.5
|
70.88
|
556
|
40.0
|
1257
|
9896
|
10.0
|
78.54
|
617
|
42.0
|
1385
|
10900
|
10.5
|
86.59
|
680
|
45.0
|
1590
|
12500
|
11.0
|
95.03
|
746
|
48.0
|
1810
|
14200
|
11.5
|
103.9
|
815
|
50.0
|
1963
|
15420
|
12.0
|
113.1
|
888
|
53.0
|
2206
|
17300
|
13.0
|
132.7
|
1040
|
55.0
|
2376
|
18600
|
14.0
|
153.9
|
1210
|
56.0
|
2463
|
19300
|
15.0
|
176.7
|
1390
|
58.0
|
2642
|
20700
|
16.0
|
201.1
|
1580
|
60.0
|
2827
|
22200
|
17.0
|
227.0
|
1780
|
63.0
|
3117
|
24500
|
18.0
|
254.5
|
2000
|
65.0
|
3318
|
26000
|
19.0
|
283.5
|
2230
|
68.0
|
3632
|
28500
|
20.0
|
314.2
|
2470
|
70.0
|
3848
|
30200
|
21.0
|
346.4
|
2720
|
75.0
|
4418
|
34700
|
22.0
|
380.1
|
29s0
|
80.0
|
5027
|
39500
|
注：1.银亮钢的交货状态分为：抛光(代号为P)、磨光(M)、磨拉(ML)及切削(Q)。交货状态应在合同中注明，未注明者按切削或磨光状态交货。
2.表中的理论质量是按密度为7.85g／cm3计算的。
(2)允许偏差
银亮钢直径的允许偏差
直径／mm
|
允许偏差级别
|
7(h7)
|
8(h8)
|
9(119)
|
10(hl0)
|
11(h11)
|
允许偏差
|
0.6-1.0
|
-0.008
|
-0.010
|
-0.020
|
-0.028
|
-0.042
|
>1.0-3.0
|
-0.010
|
-0.014
|
-0.024
|
-0.040
|
-0.060
|
>3.0-6.0
|
-0.012
|
-0.018
|
-0.030
|
-0.048
|
-0.075 1
|
>6.0-10
|
-0.015
|
-0.022
|
-0.036
|
-0.058
|
-0.090
|
>l0-18
|
-0.018
|
-0.027
|
-0.043
|
-0.070
|
-0.11
|
>18-30
|
-0.021
|
-0.033
|
-0.052
|
-0.084
|
-0.13
|
>30-50
|
-0.025
|
-0.039
|
-0.062
|
-0.100
|
-0.16
|
>50
|
-0.030
|
-0.046
|
-0.074
|
-0.120
|
-0.19
|
注：银亮钢的直径允许偏差级别应在合同中注明。未注明者一律按ll级交货。
| 
放大图片
