Shipbuilding Bulb Flat Bar Marine Bulb Flat Steel Bar

We can supply various standards.

Steel grade:

A36, Q235, Q235B, Q345B, Q255, Q275, SS400, A36, Q460A, SM400A, St37-2, SA283Gr, S235JR, S235J0, S235J2, st 52-3, S355, Q345,Q355, .etc.

Description

Bulb flat steel is mainly used in shipbuilding engineering, marine engineering, steel structure engineering and bridge engineering. With the rapid development of the shipbuilding industry in recent years, the demand for bulb flat steel is very strong. Most ships use bulbous flat steel in structural design, and bulbous flat steel with the same thickness and material as the connected plates is used as the frame (also called rib or keel).
The material of the bulb flat steel corresponds to the ship plate, which is divided into general strength (grade A, grade B and grade D, etc.) and high strength (AH32, AH36, DH32 and DH36, etc.), and the ship plate certified by different classification societies needs to be used together. Bulb flats certified by different classification societies.

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Product name Bulb Steel/Flat-Bulb Steel/Bulb Plate
Grade A36,Q235,Q235B,Q345B,Q255,Q275,SS400,A36,Q460A,SM400A,St37-2,SA283Gr,S235JR,S235J0,S235J2聽
st 52-3 S355 Q345 Q355
Standard ASTM, DIN, JIS, ANSI B36.10M-2004, ASME B36.10M-2004, ASME B36.19M-1985, ASTM A106-2006, ASTM A513-2007, ASTM A671-2006, DIN 1626,DIN EN 10208-1-1998, DIN EN 10305, JIS G4051
Width 50mm~430mm
Thickness 4~20mm
Length 6m~12m or as per your request
Surface treatment Black Surface/anti rust varnished/anti rust oiled, zinc coated
Color Nature color
Material Carbon Steel
Technique Hot Rolled
Customization Accept
Payment Terms 30%TT advance, balance before shipment
Container size 20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)

PRODUCT DESCRIPTION

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

 

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FAQ

Q:Can I get samples before order ?

A:Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings.

Q:Can I go to your factory to visit?

A:Of course, we welcome customers from all over the world to visit our factory.

Q:What product information do I need to provide?

A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.

Q:Does the product have quality inspection before loading?

A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept third party inspection.

Q:How do we trust your company?

A:We specialise in steel business for years, headquarter locates in Liaocheng, Shandong province, you are welcome to investigate in any ways, by all means, we have CE and ISO9001 certificate, quality can be guaranteed.