對邊距離

s／mm

允許偏差／mm

截面面積／cm2

理論質量(kg／m)

1組

2組

3組

六角鋼

八角鋼

六角鋼

八角鋼

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