Steel Tubes For Structural Purpose Conforming to is: 1161/ 1998 with
Latest Amendment

SIZE

N. B.

mm

Series
Outside Dimeter mm Well Thickness mm Weight
Kg\m m\tonne
15

Light

Medium

Heavy

21.30

2.00

2.60

3.20

0.947

1.21

1.44

1056

826

694

20

Light

Medium

Heavy

26.90

2.30

2.60

3.20

1.38

1.56

1.87

725

641

535

25

Light

Medium

Heavy

33.70

2.60

3.20

4.00

1.98

2.41

2.93

505

415

314

32

Light

Medium

Heavy

42.40

2.60

3.20

4.00

2.54

3.10

3.79

394

323

264

40

Light

Medium

Heavy

48.40

2.9

3.6

4.5

3.23

3.56

4.73

310

281

229

50

Light

Medium

Heavy

60.30

3.20

3.60

4.50

6.72

8.36

9.90

245

199

162

65

Light

Medium

Heavy

76.10

3.20

4.00

4.80

5.71

6.42

7.93

175

156

126

80

Light

Medium

Heavy

88.90

3.20

4.00

4.80

6.72

8.36

9.90

149

120

101

90

Light

Medium

Heavy

101.60

3.60

4.00

4.80

8.70

9.63

11.50

115

104

87

100

Light

Medium

Heavy

114.30

3.60

4.50

5.40

9.75

12.20

14.50

103

82

69

110

Light

Medium

Heavy

127.00

4.50

4.80

5.40

13.60

14.50

16.20

74

69

62

125

Light

Medium

Heavy

139.70

4.50

4.80

5.40

15.00

15.90

17.90

67

63

56

135

Light

Medium

Heavy

152.40

4.50

4.80

5.40

16.40

17.50

19.60

61

57

51

150




Light

Medium

Heavy1

Heavy2

Heavy3

Heavy4

165.10




4.50

4.80

5.40

5.90

6.30

8.00

17.80

18.90

21.30

23.20

24.70

31.00

56

53

57

43

40.5

32

150


Light

Medium

Heavy 1

Heavy 2

168.30


4.50

4.80

5.40

6.30

18.20

19.40

21.70

25.20

55

52

46

40

175

Light

Medium

Heavy

193.70

4.80

5.40

5.90

22.40

25.10

27.30

45

40

37

200

Light

Medium

Heavy1

Heavy2

Heavy3

Heavy4

219.10




4.80

5.40

5.90

8.00

10.0

12.0

25.40

29.50

31.00

41.60

51.60

61.30

39

34

32

24

19

16

225 Heavy 244.50 5.90 34.70 29
250


Heavy1

Heavy2

Heavy3

Heavy4

273.00


5.90

8.00

10.0

12.0

38.90

52.30

64.90

77.20

26

19

15

13




Tensile Properties
Grade Tensile Strength (Min.) Mpa Yield Strees (Min) Mpa Elongation on Gauge Length 5.65Min. Percent

Yst210

Yst240

Yst310

330

410

450

210

240

310

20

17

14


Tolerances

 

A Outside Diameter  
i) Upto and Including 48.3mm +0.4mm 0.8mm
(ii) Over 48.3 mm ± 1.0 %
(B) Thickness ( for all size)  
Weldde tubes + Not Ltd - 10% -10%
(C) Weight  
single tube light 10% -8%
Mediom and Heavy 10 Tons Lot Light ± 5% ± 10%


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