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KR Grade B L shape steel bar

KR Grade B L shape steel bar is a kind of high tensile strength marine steel. All of these steels have been engineered to be optimal long-lived shipbuilding steels. As with other grades of steel, they have a specific gravity of 7.8.KR Grade B L shape steel bar Shipbuilding steel plates are mainly used for making the offshore oil drilling platform, the hull of ship building and ship repairing, the platform pipe joints and other components.

KR Grade B L shape steel bar specifications: 200 × 90 × 8 ×14, 200 × 90 × 9 × 14, 200 × 90 ×10 ×14, 250 × 90 × 9 × 14, 250 × 90 × 9 × 15, 250 × 90 × 10 × 15, 250 × 90 × 11× 16, 250 × 90 × 12 × 16, 300 × 90 × 10 × 16, 300 × 90 × 11× 16, 300 × 90 × 11 × 16, 300 × 90 × 12 × 17, 300 × 90 × 13 × 17, 350 × 100 × 11 × 17, 350 × 100 × 12 × 17, 400 × 100 × 11.5 × 16, 400 × 100 × 12 × 18, 400 × 100 × 13 × 18, 450 × 125 × 11.5 × 18

KR Grade B L shape steel bar, R B chemical composition:

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 L shape steel bar, R B Mechanical Property:

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

Related products: KR Grade A L shape steel bar, KR Grade B angle steel, KR Grade B bulb flat steel bar

JW steel keeps more than 10,000 tons hot rolled and cold rolled KR Grade B L shape steel bar, 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.

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