Henan bebon international co.,ltd Gl b shipbuilding steel plate and sheet gl b steel Description




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Henan BEBON international co.,ltd

GL B shipbuilding steel plate and sheet

GL B Steel Description:

The steel for shipbuilding and oil platform---B, is the common tensile strength steel.

It is the Hull structural steel,with it's good toughness properties, higher strength,strong corrosion-resistance,the processing properties,and welding properties.GL B steel can be used in the manufacture of the ship's hull structure whose weight is below 10000 tons,and usually do navigation around coastal and river area.
GL B Steel Application :

GL B is with good mechanical properties, welding performance, process performance. GL B is mainly used to manufacture the ship hull structure of ocean, coastal and inland sea areas , shipyards, oil platforms, pipelines in the ocean, coastal power plants, port facilities and other structural parts.


GL B Steel chemical composition by [%]:

Grade

C max

Si max

Mn

P max

S max

GL B

0.21

0.35

0.80-1.20

0.035

0.035

Note:


1.CE: C+1/6Mn ≤ 0.40%Cu ≤ 0.35%,Ni ≤ 0.30%

2.Some residual elements ,like Cu and Sn ,can be controlled,because they are harmful to the property .

3. For GL B steel, if the Si is above 0.1% , the minimum Mn can be decreased by 0.6%. When GLB steel is under impact energy test, Mn can be lowered to 0.6%;CCS requires Mn ofGLB steel above 0.5%.
GL B Steel Mechanical properties:


Grade

Rm

(MPa)


Re(MPa) min

A% min

Akv/J min

GL B

400-520

235

22

E.T °C

Thickness (mm)

0

≤ 50

>50-70

>70-100

L

C

L

C

L

C

27

20

34

24

41

27

Note: In the list , Rm: .tensile strength,Re: Yield strength,A%: elongation, E.T: experimental temperature,L: lengthways, C: crosswise.


GL B Steel Delivery state:


Grade

category

The thickness of steel

≤ 12

>12.5-25

>25-35

>35-50

>50-100

GL B

Plate/sheet

A(-)

A(50)

N(50),TM(50)

CR(25)


AR*(25)

Profile steel

-

Note:


1. delivery condition: A =Any ; N=Normalized ; CR=Control Rolled ; TM=TMPC, Temperature - deformation control rolling; AR*= Can be hot rolled with the agreement of Classification Society ; CR*=Can be control rolled with the agreement of Classification Society .

2. The Figure in the ( ) means the sampling volume to do the impact test, the unit is Ton.(-) means without impact test.

3. For the steel of thickness under 25mm, generally speaking, V impact energy test is not required.
Contrast in the different standard


ASTM A131M

TOCT 5521

JIS G3106

BS LR

GB712

B

B

SM400B

SM400C


B

B

GL B structural steel hull is a low-carbon steel with excellent welding performance. A variety of welding method can be used for welding .GL B has little alloy elements and grain refinement elements added, so its weldability is good.Our steel has exported to many countries ,like Korea,Viet Nam,Singapore,etc,and has a good reputation in the world.




Bebon steel —— The most professional exporter on weathering resistant steel
Tel:0086-371-86151527 E-mail:bb@bebonchina.com

Fax: 0086-371-86011881 MSN:bebonchina@hotmail.com Skype:bebonchina Web:http://www.shipbuilding-steel.com

http://www.bebonchina.com

Oficina Dir: 2801 B# Intermational enteprise center Zhengzhou city in China.




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