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