收藏词条 编辑词条 热轧工字钢尺寸、外形、重量及允许偏差(摘要) GB 706–88
1 主题内容与适用范围
本标准规定的热轧工字钢的尺寸、外形、重量及允许偏差。
本标准适用于腿部内侧有斜度的窄边热轧工字钢。
2 尺寸及允许偏差
2．1截面尺寸及允许偏差
2．1．1工字钢的截面图示及标注符号如图1所示。
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2．1．2工字钢的尺寸、截面面积、理论重量及截面特性参数应符合表1的规定。
表1
|
型号 |
尺寸,mm |
截面面积 cm2 |
理论重量 kg／m |
参考数值 |
|||||||||||
|
h |
b |
d |
t |
r |
r1 |
X–X |
Y–Y |
||||||||
|
IX,cm4 |
WX，cm3 |
iX，cm |
IX，SX |
IX，cm4 |
WX，cm3 |
iX，cm |
|||||||||
|
10 |
100 |
68 |
4.5 |
7.6 |
6.5 |
3.3 |
14.345 |
11.261 |
245 |
19.0 |
4.14 |
8.59 |
33.0 |
9.73 |
1.52 |
|
12.6 |
126 |
74 |
5.0 |
8.4 |
7.0 |
3.5 |
18.118 |
14.223 |
188 |
77.5 |
5.20 |
10.8 |
46.9 |
12.7 |
1.61 |
|
14 |
140 |
80 |
5.5 |
9.1 |
7.5 |
3.8 |
21.516 |
16.890 |
712 |
102 |
5.76 |
12.0 |
64.4 |
16.1 |
1.73 |
|
16 |
160 |
88 |
6.0 |
9.9 |
8.0 |
4.0 |
26.131 |
20.513 |
1130 |
141 |
6.58 |
13.8 |
93.1 |
21.2 |
1.89 |
|
18 |
180 |
94 |
6.5 |
10.7 |
8.5 |
4.3 |
30.756 |
24.143 |
1660 |
185 |
7.36 |
15.4 |
122 |
26.0 |
2.00 |
|
|
200 |
100 |
7.O |
11.4 |
9.0 |
4.5 |
35.578 |
27.929 |
2370 |
237 |
8.15 |
17.2 |
158 |
31.5 |
2.12 |
|
20b |
200 |
102 |
9.O |
11.4 |
9.0 |
4.5 |
39.578 |
31.069 |
2500 |
250 |
7.96 |
16.9 |
169 |
33.1 |
2.06 |
|
|
220 |
11O |
7.5 |
12.3 |
9.5 |
4.8 |
42.128 |
33.070 |
3400 |
309 |
8.99 |
18.9 |
225 |
40.9 |
2.31 |
|
22b |
220 |
112 |
9.5 |
12.3 |
9.5 |
4.8 |
46.528 |
36.524 |
3570 |
325 |
8.78 |
18.7 |
239 |
42.7 |
2.27 |
|
|
250 |
116 |
8.O |
13.O |
10.0 |
5.O |
48.541 |
38.105 |
5020 |
402 |
10.2 |
21.6 |
280 |
48.3 |
2.40 |
|
25b |
250 |
118 |
10.0 |
13.0 |
10.0 |
5.0 |
53.541 |
42.030 |
5280 |
423 |
9.94 |
21.3 |
309 |
52.4 |
2.40 |
|
|
280 |
122 |
8.5 |
13.7 |
10.5 |
5.3 |
55.404 |
43.492 |
7110 |
508 |
11.3 |
24.6 |
345 |
56.6 |
2.50 |
|
28b |
280 |
124 |
10.5 |
13.7 |
10.5 |
5.3 |
61.004 |
47.888 |
7480 |
534 |
11.1 |
24.2 |
379 |
61.2 |
2.49 |
|
|
320 |
130 |
9.5 |
15.O |
11.5 |
5.8 |
67.156 |
52.717 |
11100 |
692 |
12.8 |
27.5 |
460 |
70.8 |
2.62 |
|
32b |
320 |
132 |
11.5 |
15.0 |
11.5 |
5.8 |
73.556 |
57.741 |
11600 |
726 |
12.6 |
27.1 |
502 |
76.0 |
2.61 |
|
|
320 |
134 |
13.5 |
15.0 |
11.5 |
5.8 |
79.956 |
62.765 |
12200 |
760 |
12.3 |
26.8 |
544 |
81.2 |
2.61 |
|
|
360 |
136 |
10.0 |
15.8 |
12.0 |
6.0 |
76.480 |
60.037 |
15800 |
875 |
14.4 |
30.7 |
552 |
81.2 |
2.69 |
|
36b |
360 |
138 |
12.O |
15.8 |
12.O |
6.0 |
83.680 |
65.689 |
16500 |
919 |
14.1 |
30.3 |
582 |
84.3 |
2.64 |
|
|
360 |
140 |
14.0 |
15.8 |
12.0 |
6.O |
90.880 |
71.341 |
17300 |
962 |
13.8 |
29.9 |
612 |
87.4 |
2.60 |
|
|
400 |
142 |
10.5 |
16.5 |
12.5 |
6.3 |
86.112 |
67.598 |
21700 |
1090 |
15.9 |
34.1 |
660 |
93.2 |
2.77 |
|
40b |
400 |
144 |
12.5 |
16.5 |
12.5 |
6.3 |
94.112 |
73.878 |
22800 |
1140 |
15.6 |
33.6 |
692 |
96.2 |
2.71 |
|
|
400 |
146 |
14.5 |
16.5 |
12.5 |
6.3 |
102.112 |
80.158 |
23900 |
1190 |
15.2 |
33.2 |
727 |
99.6 |
2.65 |
|
|
450 |
150 |
11.5 |
18.0 |
13.5 |
6.8 |
102.446 |
80.420 |
32200 |
1430 |
17.7 |
38.6 |
855 |
114 |
2.89 |
|
45b |
450 |
152 |
13.5 |
18.0 |
13.5 |
6.8 |
111.446 |
87.485 |
33800 |
1500 |
17.4 |
38.0 |
894 |
118 |
2.84 |
|
|
450 |
154 |
15.5 |
18.0 |
13.5 |
6.8 |
120.446 |
94.550 |
35300 |
1570 |
17.1 |
37.6 |
938 |
122 |
2.79 |
|
|
500 |
158 |
12.0 |
20.0 |
14.0 |
7.O |
119.304 |
93.654 |
46500 |
1860 |
19.7 |
42.8 |
1120 |
142 |
3.07 |
|
50b |
500 |
160 |
14.0 |
20.0 |
14.0 |
7.O |
129.304 |
101.504 |
48600 |
1940 |
19.4 |
42.4 |
1170 |
146 |
3.01 |
|
|
500 |
162 |
16.O |
20.0 |
14.0 |
7.0 |
139.304 |
109.354 |
50600 |
2080 |
19.0 |
41.8 |
1220 |
151 |
2.96 |
|
|
560 |
166 |
12.5 |
21.0 |
14.5 |
7.3 |
135.435 |
106.316 |
65600 |
2340 |
22.0 |
47.7 |
1370 |
165 |
3.18 |
|
56b |
560 |
168 |
14.5 |
21.0 |
14.5 |
7.3 |
146.635 |
115.108 |
68500 |
2450 |
21.6 |
47.2 |
1490 |
171 |
3.16 |
|
56e |
560 |
170 |
16.5 |
21.0 |
14.5 |
7.3 |
157.835 |
123.900 |
71400 |
2550 |
21.3 |
46.7 |
1560 |
183 |
3.16 |
|
|
630 |
176 |
13.O |
22.0 |
15.0 |
7.5 |
154.658 |
121.407 |
93900 |
2980 |
24.5 |
54.2 |
1700 |
193 |
3.31 |
|
63b |
630 |
178 |
15.0 |
22.0 |
15.0 |
7.5 |
167.258 |
131.298 |
98100 |
3160 |
24.2 |
53.5 |
1810 |
204 |
3.29 |
|
|
630 |
180 |
17.0 |
22.0 |
15.O |
7.5 |
179.858 |
141.189 |
102000 |
3300 |
23.8 |
52.9 |
1920 |
214 |
3.27 |
注：截面图和表中标注的圆弧半径r、r1的数据用于孔型设计，不做交货条件。
2．1．3经供需双方协议，可供应表2中所规定的工字钢。
表2
|
型号 |
尺寸,mm |
截面面积cm2 |
理论重量 kg／m |
|||||||||
|
h |
b |
d |
t |
r |
r1 |
|||||||
|
12 |
120 |
74 |
5.O |
8.4 |
7.0 |
3.5 |
17.818 |
13.987 |
||||
|
|
240 |
116 |
8.0 |
13.0 |
10.0 |
5.O |
47.714 |
37.477 |
||||
|
24b |
240 |
118 |
10.0 |
13.0 |
10.0 |
5.0 |
52.541 |
41.245 |
||||
|
|
270 |
122 |
8.5 |
13.7 |
10.5 |
5.3 |
54.554 |
42.825 |
||||
|
27b |
270 |
124 |
10.5 |
13.7 |
10.5 |
5.3 |
59.954 |
47.064 |
||||
|
|
300 |
126 |
9.0 |
14.4 |
11.0 |
5.5 |
61.254 |
48.084 |
||||
|
30b |
300 |
128 |
11.0 |
14.4 |
11.O |
5.5 |
67.254 |
52.794 |
||||
|
|
300 |
130 |
130 |
14.4 |
11.0 |
5.5 |
73.254 |
57.504 |
||||
|
|
550 |
166 |
12.5 |
21.0 |
14.5 |
7.3 |
134.185 |
105.335 |
||||
|
55b |
550 |
168 |
14.5 |
21.0 |
14.5 |
7.3 |
145.185 |
113.970 |
||||
|
|
550 |
170 |
16.5 |
21.0 |
14.5 |
7.3 |
156.185 |
122.605 |
||||
|
型号 |
参考数值 |
|||||||||||
|
X–X |
Y–Y |
|||||||||||
|
IX,cm4 |
WX，cm3 |
IX，cm |
IX：SX |
IY,cm4 |
WY，cm3 |
iY，cm |
||||||
|
12 |
436 |
72.7 |
4.95 |
10.3 |
46.9 |
12.7 |
1.62 |
|||||
|
|
4570 |
381 |
9.77 |
20.7 |
280 |
48.4 |
2.42 |
|||||
|
24b |
4800 |
400 |
9.57 |
20.4 |
297 |
50.4 |
2.38 |
|||||
|
|
6550 |
485 |
10.9 |
23.8 |
345 |
56.6 |
2.51 |
|||||
|
27b |
6870 |
509 |
10.7 |
22.9 |
366 |
58.9 |
2.47 |
|||||
|
|
8950 |
597 |
12.1 |
25.7 |
400 |
63.5 |
2.55 |
|||||
|
30b |
9400 |
627 |
11.8 |
25.4 |
422 |
65.9 |
2.50 |
|||||
|
|
9850 |
657 |
11.6 |
25.0 |
445 |
68.5 |
2.46 |
|||||
|
|
62900 |
2290 |
21.6 |
46.9 |
1370 |
164 |
3.19 |
|||||
|
55b |
65600 |
2390 |
21.2 |
46.4 |
1420 |
170 |
3.14 |
|||||
|
|
68400 |
2490 |
20.9 |
45.8 |
1480 |
175 |
3.08 |
|||||
注：表中标注的圆弧半径r，r1的数据用于孔型设计，不做交货条件。
标记示例
普通碳素钢甲类3号镇静钢，尺寸为400mm×141mm×12.5mm的热轧工字钢标记如下：
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