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RINA Grade B bulb flat steel bar

RINA Grade B bulb flat steel bar with good toughness properties, higher strength. RINA Grade B bulb flat steel bar are mainly used to contribute hull of ships and the cranes of break bulker and vessels in low temperature oceans. All of our stock is the high quality RINA Grade B bulb flat steel bar shipbuilding steel plate.

RINA Grade B bulb flat steel bar specifications: 80 × 5/6, 100 × 7/8, 120 × 6/7/8, 140 × 7/8/10, 160 × 7/8/9/11, 180 × 8/9/10/11, 200 × 9/10/1112, 220 × 10/11/12, 240 × 10/11/12, 260 × 10/11/12, 280 × 11/12/13, 300 × 11/12/13, 320 × 12/13/14, 340 × 12/13/14, 370 × 13/14/15, 400 × 14/15/16, 430 × 14/15/17/19/20

RINA Grade B bulb flat steel bar , RI/B chemical composition:

Grade

C max

Si max

Mn

P max

S max

Als min

RI/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%

RINA Grade B bulb flat steel bar, RI/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

RI/B

400-520

235

22

0

27

20

34

24

41

27

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

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