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尺 寸

特 性**

公稱*尺寸

壁厚

每英尺重量

截面積

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

10×10

.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