Our rolling range for Marine steel plate DNV A550 D550 E550 F550 shall be thickness from 6mm to 300mm,width from 1500mm to 4200mm and length from 5000mm to 14000mm.Our normal rolling period for ship plate NV F620 shall be about 25 days for hundreds tons,and then DNV agency would come to our mill for sample inspection before shipment.Our processing plants also can offer cutting and welding services for customers' special sizes demands.Our pre-treatment plants can offer shot blasting and painting for DNV F620 shipbuilding steel plates and profiles before shipment,and then they can be used directly by the end users.

DNV Grade A550 Shipbuilding Steel Plate Chemical Composition and Mechanical Property
| C max | Si max | Mn | P max | S max | N max. |
|
0.21 |
0.55 | 1.70 |
0.030 |
0.030 |
0.020 |
| Yield Strength (MPa) min. | Tensile Strength (MPa) | Elongation min. % |
| 550 | 670-830 | 16 |
DNV Grade D550 Shipbuilding Steel Plate Chemical Composition and Mechanical Property
| C max | Si max | Mn | P max | S max | N max. |
|
0.20 |
0.55 | 1.70 |
0.025 |
0.025 |
0.020 |
| Yield Strength (MPa) min. | Tensile Strength (MPa) | Elongation min. % |
| 550 | 670-830 | 16 |
DNV Grade E550 Shipbuilding Steel Plate Chemical Composition and Mechanical Property
| C max | Si max | Mn | P max | S max | N max. |
|
0.20 |
0.55 | 1.70 |
0.025 |
0.025 |
0.020 |
| Yield Strength (MPa) min. | Tensile Strength (MPa) | Elongation min. % |
| 550 | 670-830 | 16 |
DNV Grade F550 Shipbuilding Steel Plate Chemical Composition and Mechanical Property
| C max | Si max | Mn | P max | S max | N max. |
|
0.18 |
0.55 | 1.60 |
0.020 |
0.020 |
0.020 |
| Yield Strength (MPa) min. | Tensile Strength (MPa) | Elongation min. % |
| 550 | 670-830 | 16 |
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