Bulb Flat Bar
We are a high-quality steel supplier in China with reliable product quality and considerate service. We can supply various specifications of marine flat steel, marine angle steel, marine steel plates, etc.
Steel Grade:
Standards:
Q235, Q345, SS400, SS490, S235/S275, A36, A992, A572 gr50 gr60
Description
Bulb Flat Bar is a kind of special steel used in shipbuilding and bridge construction, and it occupies a very important position in Marine steel.We are a high-quality steel supplier in China with reliable product quality and considerate service. We can supply various specifications of marine flat steel, marine angle steel, marine steel plates, etc.
Product Description
Bulb flat steel is a medium-section bar mainly used in the fields of shipbuilding and bridge building. Marine ball flat steel is an auxiliary medium-section bar for shipbuilding. Generally, the main hulls of larger ships and regular ships are mostly made of marine spherical flat steel, and the spherical flat steel with the same thickness and material as the connected plates is used as the frame material (also called ribs or keels).
Standards for flat bulb steel: GB/T9945-2012, EN10067:1996, JIS G3192, ISO 657-19.
Bulb flat steel material corresponds to shipbuilding steel plates, which are divided into ordinary strength (Grade A, Grade B, Grade D, etc.) and high strength (AH32, AH36, DH32, DH36, etc.). Ship plates certified by different classification societies need to be used together. Bulb flat steel is certified by different classification societies.
Standards
|
Model Number
|
Nominal Size (mm)
|
Theoretical Weight (Kg/m)
|
||||
|
b
|
t
|
h
|
r1
|
r
|
||
|
80X5
|
80
|
5
|
19
|
4
|
≤1.5
|
4.25
|
|
80X6
|
6
|
20
|
≤2
|
4.88
|
||
|
100X7
|
100
|
7
|
22.5
|
4.5
|
≤2
|
6.86
|
|
100X8
|
8
|
23.5
|
7.65
|
|||
|
120X6
|
120
|
6
|
23
|
5
|
≤2
|
7.32
|
|
120X7
|
7
|
24
|
8.26
|
|||
|
120X8
|
8
|
25
|
9.2
|
|||
|
140X7
|
140
|
7
|
26
|
5.5
|
≤2
|
9.75
|
|
140X8
|
8
|
27
|
10.85
|
|||
|
140X10
|
10
|
29
|
≤3
|
13.05
|
||
|
160X7
|
160
|
7
|
29
|
6
|
≤2
|
11.46
|
|
160X8
|
8
|
30
|
12.72
|
|||
|
160X9
|
9
|
31
|
13.97
|
|||
|
160X11
|
11
|
33
|
≤3
|
16.49
|
||
|
180X8
|
180
|
8
|
33
|
7
|
≤2
|
14.8
|
|
180X9
|
9
|
34
|
16.22
|
|||
|
180X10
|
10
|
35
|
≤3
|
17.63
|
||
|
180X11
|
11
|
36
|
19.04
|
|||
|
200X9
|
200
|
9
|
37
|
8
|
≤2
|
18.57
|
|
200X10
|
10
|
38
|
≤3
|
20.14
|
||
|
200X11
|
11
|
39
|
21.71
|
|||
|
200X12
|
12
|
40
|
23.28
|
|||
|
220X10
|
220
|
10
|
41
|
9
|
≤3
|
22.27
|
|
220X11
|
11
|
42
|
24.5
|
|||
|
220X12
|
12
|
43
|
26.22
|
|||
|
240X10
|
240
|
10
|
40
|
10
|
≤3
|
25.5
|
|
240X11
|
11
|
45
|
27.39
|
|||
|
240X12
|
12
|
46
|
29.27
|
|||
|
260X10
|
260
|
10
|
47
|
11
|
≤3
|
28.25
|
|
260X11
|
11
|
48
|
30.39
|
|||
|
260X12
|
12
|
49
|
32.43
|
|||
|
280X10
|
280
|
11
|
51
|
12
|
≤3
|
33.5
|
|
280X11
|
12
|
52
|
35.7
|
|||
|
280X12
|
13
|
53
|
37.9
|
|||
|
300X11
|
300
|
11
|
54
|
13
|
≤3
|
36.7
|
|
300X12
|
12
|
55
|
39.09
|
|||
|
300X13
|
13
|
56
|
41.44
|
|||
|
320X12
|
320
|
12
|
58
|
14
|
≤3
|
42.6
|
|
320X13
|
13
|
59
|
45.09
|
|||
|
320X14
|
14
|
60
|
≤4
|
47.6
|
||
|
340X12
|
340
|
12
|
61
|
15
|
≤3
|
46.2
|
|
340X13
|
13
|
62
|
48.86
|
|||
|
340X14
|
14
|
63
|
≤4
|
51.5
|
||
|
370X13
|
370
|
13
|
66.5
|
≤3
|
54.7
|
|
|
370×14
|
14
|
67.5
|
16.5
|
≤4
|
57.6
|
|
|
370×15
|
15
|
68.5
|
16.5
|
≤4
|
60.5
|
|
|
400×14
|
400
|
14
|
72
|
18
|
≤4
|
48.86
|
|
400×15
|
15
|
73
|
18
|
51.5
|
||
|
400×16
|
16
|
74
|
18
|
54.7
|
||
|
430×14
|
430
|
14
|
76.5
|
19.5
|
≤4
|
70.6
|
|
430×15
|
15
|
77.5
|
19.5
|
73.9
|
||
|
430×17
|
17
|
79.5
|
19.5
|
80.7
|
||
|
430×19
|
19
|
81.5
|
19.5
|
87.4
|
||
|
430×20
|
20
|
82.5
|
19.5
|
90.8
|
||
Standards and Classifications
| Size(mm) | HP80-HP430 |
| Standard: | EN10067:1997 |
| Grade: | A,B,D,E,AH32,AH36,DH32,DH36,EH32,EH36 |
| S235JR, S235J0, S235J2 | |
| S275JR, S275J0, S275J2 | |
| S355JR, S355J0, S355J2, S355K2 | |
| Certification: | ABS, CCS,LR,KR,NK,RINA,BV,DNV-GL,RMRS |
| CE Certification | |
| Length: | 6m-20m, according to customer’s request |
| Application: | Hull Structure , Bridge Structure, Offshore Platform |
Product Display
Packing & Delivery
Shipping By Sea
1. Standard packaging
2. Packaging according to customer requirements
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