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| KR Grade B |
Product: KR Grade B shipbuilding steel plate, R B shipbuilding steel plate, KR Grade B shipbuilding angle steel bar , R B shipbuilding angle steel bar, KR Grade B bulb flat shipbuilding steel bar, R B bulb flat shipbuilding steel bar, KR Grade B L section shipbuilding steel bar, R B L shaped shipbuilding steel bar,
Key words: KR Grade B shipbuilding steel, KR Grade B Ocean steel, KR Grade B Marine steel,KR Grade B offshore engineering steel. R B shipbuilding steel, R B Ocean steel, R B Marine steel,R B offshore engineering steel,KR Grade B Z15, KR Grade B Z25,KR Grade B Z35,ASTM A131 KR Grade B
KR Grade B, R B chemical composition in shipbuilding steel plate, angle steel bar, bulb flat bar, L section steel bar
Grade
|
C max
|
Si max
|
Mn
|
P max
|
S max
|
Als min
|
R B
|
0.21
|
0.35
|
0.80-1.20
|
0.035
|
0.035
|
-
|
CE: C+1/6Mn ≤ 0.40%
Cu ≤ 0.35%,Ni ≤ 0.30%
KR Grade B, R B Mechanical Property in shipbuilding steel plate, angle steel bar, bulb flat bar, L section steel bar
Grade
|
Rm
(MPa)
|
Re(MPa) min
|
A% min
|
Akv/J min
| ||||||
E.T °C
|
Thickness (mm)
| |||||||||
≤ 50
|
>50-70
|
>70-100
| ||||||||
L
|
C
|
L
|
C
|
L
|
C
| |||||
R B
|
400-520
|
235
|
22
|
0
|
27
|
20
|
34
|
24
|
41
|
27
|
KR Grade B, R B shipbuilding steel plate, angle steel bar, bulb flat bar, L section steel bar delivery condition :
Grade
|
category
|
The thickness of steel
| ||||
≤ 12
|
>12.5-25
|
>25-35
|
>35-50
|
>50-100
| ||
R B
|
Plate/sheet
|
A(-)
|
A(50)
|
N(50),TM(5)
CR(25)
AR*(25)
| ||
Profile steel
|
-
| |||||
JW steel keeps more than 10,000 tons hot rolled and cold rolled KR Grade B, R B shipbuilding steel in stock each month. We can meet our customer’s any quantity request. Based on these stock source, our advantage industry spread into steel process like : cutting ( any size and any shape ) drilling, welding, milling, machining and steel structure.
Mail box: vivian@steel-jw.com
Skype: vivian.qiu16
Website: www.steel-jw.com
Tel 86, 371, 63332179
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