磨光圓鐵 (中碳)

Standard Weight Formula

Diameter m/m X Diameter m/m X0.0617 = Kg/M

Size

Kg/M

Size

Kg/M

Size

Kg/M

Size

Kg/M

1/4”

0.25

21/4”

20.15

11.0

0.75

38

8.91

5/16”

0.39

23/8”

22.45

12.0

0.89

40

9.87

3/8”

0.56

21/2”

24.88

13.0

1.04

42

10.88

7/16”

0.76

23/4”

30.10

14.0

1.21

45

12.49

1/2”

1.00

3”

35.83

15.0

1.39

48

14.22

9/16”

1.26

31/4”

42.05

16.0

1.58

50

15.43

5/8”

1.55

31/2”

48.76

17.0

1.78

55

18.66

11/16”

1.88

33/4”

55.98

18.0

2.00

60

22.21

3/4”

2.24

4”

63.69

19.0

2.23

65

26.07

13/16”

2.63

3.0

0.06

20.0

2.47

70

30.23

7/8”

3.05

4.0

0.10

21.0

2.72

75

34.71

15/16”

3.50

4.5

0.13

22.0

2.99

80

39.49

1”

3.98

4.8

0.14

23.0

3.26

85

44.58

11/16”

4.49

5.0

0.15

24

3.55

90

49.98

11/8”

5.04

5.3

0.17

25

3.86

95

55.68

11/4”

6.22

6.0

0.22

26

4.17

100

61.70

13/8”

7.53

6.8

0.29

28

4.84

11/2”

8.96

7.0

0.30

30

5.55

15/8”

10.51

8.0

0.39

32

6.32

13/4”

12.19

8.3

0.43

33

6.72

17/8”

13.99

8.8

0.48

34

7.13

2”

15.92

9.0

0.50

35

7.56

21/8”

17.98

10.0

0.62

36

8.00