Grade B bulb flat steel,Grade B bulb flat steel size

Posted:1/6/2015 3:45:52 AM

Grade B bulb flat steel is mainly used for making the hull of ship building and ship repairing, the offshore oil drilling platform, the platform pipe joints and other components. More information about Grade B flat steel technology, please see the following:

Grade B bulb flat steel chemical composition:

Grade

C max

Si max

Mn

P max

S max

Als min

B

0.21

0.35

0.80-1.20

0.035

0.035

-

 

Grade B bulb flat steel mechanical property:

Grade

 

Mechanical Property

Charpy V Impact Test

Thickness

Yield

Tensile

Elongation

Degree

Energy 1

Energy 2

BV/B

mm

Min Mpa

Mpa

Min  %

0

J

J

t≤50

235

400-520

22%

20

    27

50��t≤70

235

400-520

22%

24

34

70��t≤100

235

400-520

22%

27

41

Note: Energy 1 is transverse impact test, Energy 2 is longitudinal

Grade B bulb flat steel size:

Model

Nominal Size (mm)

Section

Area
(cm2)

Weight (kg/m)

Tolerance (mm)

b

t

h

rl

r

b

t

h

HP80×5
HP80×6

80

5

19

4

≤1.5

5.41

4.25

±1.5

+0.7
-0.3

±0.5

6

20

≤2

6.21

4.88

HP100×7
HP100×8

100

7

22.5

4.5

≤2

8.74

6.86

8

23.5

9.74

7.65

HP120×6
HP120×7
HP120×8

120

6

23

5

≤2

9.32

7.32

7

24

10.52

8.26

8

25

11.72

9.20

HP140×7
HP140×8
 HP140×10

140

7

26

5.5

≤2

12.43

9.75

±2.0

+1.0
-0.3

±0.8

8

27

13.83

10.85

10

29

≤3

16.63

13.05

HP160×7
HP160×8
HP160×9
 HP160×11

160

7

29

6

≤2

14.60

11.46

8

30

16.20

12.72

9

31

17.80

13.97

11

33

≤3

21.00

16.49

HP180×8
HP180×9
 HP180×10
 HP180×11

180

8

33

7

≤2

18.86

14.80

9

34

20.66

16.22

10

35

≤3

22.46

17.63

11

36

24.26

19.04

HP200×9
 HP200×10
 HP200×11
 HP200×12

200

9

37

8

≤2

23.66

18.57

±3.0

+1.1
-0.3

±0.95

10

38

≤3

25.66

20.14

11

39

27.66

21.71

12

40

29.66

23.28

HP220×10
HP220×11
HP220×12

220

10

41

9

≤3

29.66

22.27

11

42

29.00

24.50

12

43

31.20

26.22

HP240×10
HP240×11
HP240×12

240

10

40

10

≤3

33.49

25.50

11

45

34.89

27.39

12

46

37.29

29.27

HP260×10
HP260×11
HP260×12

260

10

47

11

≤3

36.11

28.35

11

48

38.71

30.39

12

49

41.31

32.43

HP280×11
HP280×12
HP280×13

280

11

51

12

≤3

42.68

33.50

12

52

45.48

35.70

13

53

48.28

37.90

HP300×11
HP300×12
HP300×13

300

11

54

13

≤3

46.78

36.70

12

55

49.79

39.09

13

56

52.79

41.44

HP320×12
HP320×13
HP320×14

320

12

58

14

≤3

54.25

42.60

±4.0

+1.3
-0.3

+1.10

13

59

57.25

45.09

14

60

≤4

60.85

47.60

HP340×12
HP340×13
HP340×14

340

12

61

15

≤3

58.84

46.20

13

62

62.24

48.86

14

63

≤4

65.54

51.50

HP370×13
HP370×14
HP370×15

370

13

66.5

16.5

≤3

69.70

54.70

14

67.5

≤4

73.40

57.60

15

68.5

77.10

60.50

HP400×14
HP400×15
HP400×16

400

14

72

18

≤4

81.48

63.96

15

73

85.48

67.10

16

74

89.48

70.20

HP430×14
HP430×15
HP430×17
HP430×19
HP430×20

430

14

76.5

19.5

≤4

89.70

70.60

15

77.5

94.19

73.90

17

79.5

102.79

80.70

19

81.5

111.39

87.40

20

82.5

115.00

90.80

Our mill is approved by ABS, Bureau Veritas, DNV, Lloyds, GL, CCS, KR, RINA, NK authorities.

If you want to know more information about Grade B bulb flat steel, please contact us and let us know your required specification, the best Grade B bulb flat steel price will be quoted in shortest time.

Contact:
Tell: 0086-371-86151827, 0086-371-86011881
E-mail:[email protected]
Skype: bebon.abby

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