Bulb flats
Bulb flats


Bulb flats

Description

Bulb Flats are horizontally welded on the interior side of the body with plates as the stiffeners for construction of ship hulls.


Characteristics


a)    Rounded edges- saving the time and cost for edges grinding before painting

b)    Lower weight ratio

c)     Better reinforcing capacity, corrosion-resistant and life performance

 

Classification Societies


RS, RINA, NK, LR, KR, GL, DNV, CCS, BV, ABS, etc.


Steel Grades and Delivery Condition

 

Strength

Steel Grades

Delivery Condition

Normal                

A,B,D,E

As Rolled

High

A32,D32,E32,    A36,D36,E36.

 

Standard


1.   EN10067:1996 (GB/T9945-2012)   2. GOST 21937-76 (GB/T9945-2001)

 

Shape and Range of Dimension

Bulb flats

Width (b):50mm-430mm

Thickness (t):4mm-20mm

Length: 6m-12m 

*Short cuts or longer lengths are available by special agreement.

 

 

Tolerance

 

Nominal Dimension

(mm)

*Tolerance

(mm)

b

t

h

B

t

h

50

70

≤5

14-21

±1.0

+0.6

- 0.3

±0.5

70

120

5-8

19-30

±1.5

+0.7

- 0.3

±0.5

120

180

6-11

26-38

±2.0

+1.0

- 0.3

±0.8

180

300

8-14

37-57

±3.0

+1.1

- 0.3

±0.95

300

430

11-20

58-82.5

±4.0

+1.3

- 0.3

±1.1

 

*It is possible to agree on tighter tolerance with our sales when ordering. 

 

Parameters- Sheet 1  

Bulb flats         

 

EN10067:1996 (GB/T9945-2012)


Type

Nominal Dimension(mm)

Sectional Area (cm2)

Metric Weight  (kg/m)

b

t

h

r1

r

HP80x5

80

5

19

4

≤1.5

5.41

4.25

HP80x6

80

6

20

4

≤2

6.21

4.88

HP100x7

100

7

22.5

4.5

≤2

8.74

6.86

HP100x8

100

8

23.5

4.5

≤2

9.74

7.65

HP120x6

120

6

23

5

≤2

9.32

7.32

HP120x7

120

7

24

5

≤2

10.52

8.26

HP120x8

120

8

25

5

≤2

11.72

9.20

HP140x7

140

7

26

5.5

≤2

12.43

9.75

HP140x8

140

8

27

5.5

≤2

12.83

10.85

HP140x9

140

9

28

5.5

≤2

15.20

11.93

HP140x10

140

10

29

5.5

≤3

16.63

13.05

HP160x7

160

7

29

6

≤2

14.60

11.46

HP160x8

160

8

30

6

≤2

16.20

12.72

HP160x9

160

9

31

6

≤2

17.80

13.97

HP160x11

160

11

33

6

≤3

21.00

16.49

HP180x8

180

8

33

7

≤2

18.86

14.80

HP180x9

180

9

34

7

≤2

20.66

16.22

HP180x10

180

10

35

7

≤3

22.46

17.63

HP180x11

180

11

36

7

≤3

24.26

19.04

HP200x9

200

9

37

8

≤2

23.66

18.57

HP200x10

200

10

38

8

≤3

25.66

20.14

HP200x11

200

11

39

8

≤3

27.66

21.71

HP200x12

200

12

40

8

≤3

29.66

23.28

HP220x10

220

10

41

9

≤3

29.00

22.77

HP220x11

220

11

42

9

≤3

31.20

24.50

HP220x12

220

12

43

9

≤3

33.40

26.22

 

*The special requirements for thickness can be accepted by agreement. 

 

Parameters - Sheet 2

Bulb flats

EN10067:1996(GB/T9945-2012)


Type

Nominal Dimension(mm)

Sectional Area (cm2)

Metric Weight (kg/m)

b

t

h

r1

r

HP240x10

240

10

44

10

≤3

32.49

25.50

HP240x11

240

11

45

10

≤3

34.89

27.39

HP240x12

240

12

46

10

≤3

37.29

29.27

HP260x10

260

10

47

11

≤3

36.11

28.35

HP260x11

260

11

48

11

≤3

38.71

30.39

HP260x12

260

12

49

11

≤3

41.31

32.43

HP260x13

260

13

50

11

≤3

43.85

34.43

HP280x11

280

11

51

12

≤3

42.68

33.50

HP280x12

280

12

52

12

≤3

45.48

35.70

HP280x13

280

13

53

12

≤3

48.28

37.90

HP300x11

300

11

54

13

≤3

46.78

36.70

HP300x12

300

12

55

13

≤3

49.79

39.09

HP300x13

300

13

56

13

≤3

52.79

41.44

HP320x12

320

12

58

14

≤3

54.25

42.60

HP320x13

320

13

59

14

≤3

57.25

45.09

HP320x14

320

14

60

14

≤4

60.85

47.60

HP340x12

340

12

61

15

≤3

58.84

46.20

HP340x13

340

13

62

15

≤3

62.24

48.86

HP340x14

340

14

63

15

≤4

65.54

51.50

HP370x13

370

13

66.5

16.5

≤3

69.70

54.70

HP370x14

370

14

67.5

16.5

≤4

73.40

57.60

HP370x15

370

15

68.5

16.5

≤4

77.10

60.50

HP400x14

400

14

72

18

≤4

81.48

63.96

HP400x15

400

15

73

18

≤4

85.48

67.10

HP400x16

400

16

74

18

≤4

89.48

70.20

HP430x14

430

14

76.5

19.5

≤4

89.70

70.60

HP430x15

430

15

77.5

19.5

≤4

94.19

73.90

HP430x17

430

17

79.5

19.5

≤4

102.79

80.70

HP430x19

430

19

81.5

19.5

≤4

111.39

87.40

HP430x20

430

20

82.5

19.5

≤4

115.00

90.80


*The special requirements for thickness can be accepted by agreement.

 

Parameters - Sheet 3

Bulb flats

GOST 21937-76 (GB/T9945-2001)


Type

Nominal Dimension(mm)

Sectional Area (cm2)

Metric Weight (kg/m)

b

t

h

r1

r

50x4

50

4

19

3

≤1

2.88

2.26

60x5

60

5

20

3

≤1

4.31

3.38

80x5

80

5

22

4

≤1.5

5.86

4.61

90x5.5

90

5.5

24

4

≤1.5

7.06

5.55

100x6

100

6

26

5

≤1.5

8.66

6.81

120x6.5

120

6.5

30

5

≤2

11.18

8.78

140x7

140

7

33

6

≤2

14.12

11.10

140x9

140

9

35

6

≤2

16.91

13.30

220x11

220

11

48

8.5

≤3

32.90

25.87

220x13

220

13

50

8.5

≤3

37.30

29.33

240x12

240

12

52

9

≤3

38.87

30.55

240x14

240

14

54

9

≤3

43.67

34.32

270x12

270

12

55

9.5

≤3

43.93

34.53

270x14

270

14

57

9.5

≤3

49.33

38.77

 

*The special requirements for thickness can be accepted by agreement.

Learn more

Single grouser track shoe long bar
Single grouser track shoe long bar
Double grouser track shoe long bar
Double grouser track shoe long bar
Triple grouser track shoe long bar
Triple grouser track shoe long bar
  • Telephone consultation

    Online Service18851598660
  • Skype

  • E-mail consultation

Click on the phone to make a call
点击电话进行一键拨打
Click on the mailbox to send a key
点击邮箱进行一键发送