|
|
特 性**
|
|
公称*尺寸
|
壁厚
|
每英尺重量
|
截面积
|
I
|
S
|
r
|
|
ln.
|
ln.
|
Lb.
|
ln.2
|
ln.4
|
ln.3
|
ln.
|
|
16×16
|
.5000
|
1/2
|
103.30
|
30.4
|
1200
|
150
|
6.29
|
|
|
.3750
|
3/8
|
78.52
|
23.1
|
931
|
116
|
6.35
|
|
|
.3125
|
5/16
|
65.87
|
19.4
|
789
|
98.6
|
6.38
|
|
14×14
|
.5000
|
1/2
|
89.68
|
26.4
|
791
|
113
|
5.48
|
|
|
.3750
|
3/8
|
68.31
|
20.1
|
615
|
87.9
|
5.54
|
|
|
.3125
|
5/16
|
57.36
|
16.9
|
522
|
74.6
|
5.57
|
|
12×12
|
.5000
|
1/2
|
76.07
|
22.4
|
485
|
80.9
|
4.66
|
|
|
.3750
|
3/8
|
58.10
|
17.1
|
380
|
63.4
|
4.72
|
|
|
.3125
|
5/16
|
48.86
|
14.4
|
324
|
54.0
|
4.75
|
|
|
.2500
|
1/4
|
39.43
|
11.6
|
265
|
44.1
|
4.78
|
|
|
.6250
|
5/8
|
76.33
|
22.4
|
321
|
64.2
|
3.78
|
|
|
.5000
|
1/2
|
62.46
|
18.4
|
271
|
54.2
|
3.84
|
|
|
.3750
|
3/8
|
47.90
|
14.1
|
214
|
42.9
|
3.90
|
|
|
.3125
|
5/16
|
40.35
|
11.9
|
183
|
36.7
|
3.93
|
|
|
.2500
|
1/4
|
32.63
|
9.59
|
151
|
30.1
|
3.96
|
|
8×8
|
.6250
|
5/8
|
59.32
|
17.4
|
153
|
38.3
|
2.96
|
|
|
.5000
|
1/2
|
48.85
|
14.4
|
131
|
32.9
|
3.03
|
|
|
.3750
|
3/8
|
37.69
|
11.1
|
106
|
26.4
|
3.09
|
|
|
.3125
|
5/16
|
31.84
|
9.36
|
90.9
|
22.7
|
3.12
|
|
|
.2500
|
1/4
|
25.82
|
7.59
|
75.1
|
18.8
|
3.15
|
|
|
.1875
|
3/16
|
19.63
|
5.77
|
58.2
|
14.6
|
3.18
|
|
7×7
|
.5000
|
1/2
|
42.05
|
12.4
|
84.6
|
24.2
|
2.62
|
|
|
.3750
|
3/8
|
32.58
|
9.58
|
68.7
|
19.6
|
2.68
|
|
|
.3125
|
5/16
|
27.59
|
8.11
|
59.5
|
17.0
|
2.71
|
|
|
.2500
|
1/4
|
22.42
|
6.59
|
49.4
|
14.1
|
2.74
|
|
|
.1875
|
3/16
|
17.08
|
5.02
|
38.5
|
11.0
|
2.77
|
*指平直边的外部尺寸
**特性是根据外圆角公称半径等于壁厚的两倍计算的。
