Grade 30 L3 Calibrated Chain as per DIN 763

Nominal size DN mm

Diameter tolerance mm

Preferred pitch inner length mm

Pitch tolerance (1 link )mm

Preferred outside width mm

Outside width tolerance 

Proof load KN

Min breaking load KN

Safe working load Ton

Approx per mtr kg

Away from weld mm

At weld mm

6.3

+ 0.12 -0.39

19

0.26

20

+ 0.45

+ 1.1

9.5

18.9

0.48

0.9

7.1

+ 0.14 -0.43

21

0.30

23

+ 0.52

+ 1.2

11.8

23.6

0.60

1.1

8

+ 0.16 -0.48

24

0.33

26

+ 0.59

+ 1.4

15.1

30.2

0.76

1.4

9

+ 0.18 -0.54

27

0.36

29

+ 0.67

+ 1.5

19.0

38.1

0.96

1.75

10

+ 0.20 -0.60

30

0.40

32

+ 0.75

+ 1.7

23.6

47.1

1.20

2.15

11.2

+ 0.22 -0.67

34

0.44

36

+ 0.84

+ 1.9

29.6

59.2

1.50

2.7

12

+ 0.24 -0.72

36

0.47

42

+ 0.889

+ 2.0

35.7

71.4

1.80

3.15

12.5

+ 0.25 -0.75

37

0.49

41

+ 0.93

+ 2.1

36.9

73.8

1.88

3.25

14

+ 0.28 -0.84

42

0.55

46

+ 1.05

+ 2.4

46.5

93

2.36

4.1

16

+ 0.32 -0.96

48

0.63

52

+ 1.2

+ 2.7

60

120

3.05

5.4

18

+ 0.90 -0.90

54

0.71

58

+ 1.35

+ 3.0

76.5

153

3.89

7.2

20

+ 1.0 -1.0

60

0.79

65

+ 1.5

+ 3.4

89.51

189

5.00

8.8

22.4

+ 1.0 -1.0

66

0.88

73

+ 1.7

+ 3.8

114

228

5.84

10.5

25

+ 1.2 -1.2

75

0.99

82

+ 1.9

+ 4.3

148

296

7.54

13.8

28

+ 1.4 -1.4

84

1.1

91

+ 2.1

+ 4.8

186

372

9.48

17.5

32

+ 1.6 -1.6

96

1.2

104

+ 2.4

+ 5.4

242

483

12.33

22.5

36

+ 1.9 -1.9

108

1.4

117

+ 2.7

+ 6.1

306

610

15.49

28.5