Product Overview
Our DNV-GL Hull Structural Steel Plate is manufactured for shipbuilding, offshore structures, and marine engineering applications requiring certified structural performance. Produced using controlled rolling, TMCP, or normalized processing according to grade requirements, these plates provide reliable strength, weldability, and low-temperature toughness for demanding marine environments.
DNV-GL Standard Marine Steel Sheet Chemical Composition
|
Grade |
C%≤ |
Mn % |
Si % |
p % ≤ |
S % ≤ |
Al % |
Nb % |
V % |
|
A |
0.22 |
0.70~1.60 |
0.10~0.35 |
0.04 |
0.040 |
- |
- |
- |
|
B |
0.21 |
0.60~1.00 |
0.10~0.35 |
0.04 |
0.040 |
- |
- |
- |
|
D |
0.21 |
0.60~1.00 |
0.10~0.35 |
0.04 |
0.04 |
≥0.015 |
- |
- |
|
E |
0.18 |
0.70~1.20 |
0.10~0.35 |
0.04 |
0.04 |
≥0.015 |
- |
|
|
A32 D32 E32 |
0.18 |
0.70~1.60* |
0.10~0.50 |
0.04 |
0.04 |
≥0.015 |
- |
- |
|
A36 D36 E36 |
0.18 |
0.70~1.60* |
0.10~0.50 |
0.04 |
0.04 |
≥0.015 |
0.015~0.050 |
0.030~0.10 |
Note: For Grade A32 and A36, minimum Mn content is 0.70%. For Grades D32, E32, D36, and E36, minimum Mn content is 0.90%.
DNV-GL Standards Ship Steel Plate Mechanical Property
|
Grade |
Thickness |
Yieldpoint |
Tensile Strength |
Elongation |
V-impact test |
Cold bend test |
|||
|
Temperature |
Average AKV |
b=2a |
b=5a |
||||||
|
lengthways |
crosswise |
||||||||
|
≥ |
|||||||||
|
A |
≤50 |
235 |
400~490 |
22 |
- |
- |
- |
d=2a |
- |
|
B |
0 |
27 |
20 |
- |
d=3a |
||||
|
D |
-10 |
||||||||
|
E |
-40 |
||||||||
|
A32 |
≤50 |
315 |
440~590 |
22 |
0 |
31 |
22 |
- |
d=3a |
|
D32 |
-20 |
||||||||
|
E32 |
-40 |
||||||||
|
A36 |
≤50 |
355 |
490~620 |
21 |
0 |
34 |
24 |
- |
d=3a |
|
D36 |
-20 |
||||||||
|
E36 |
-40 |
||||||||
Equivalent Grades Of DNV-GL Hull Structural Steel Plate
|
Our Grade (DNV) |
Type |
ABS (USA) |
CCS (China) |
BV (France) |
LR (UK) |
NK (Japan) |
KR (South Korea) |
|
DNV-GL A |
Normal Strength |
ABS A |
CCS A |
BV A |
LR A |
NK A |
KR A |
|
DNV-GL B |
Normal Strength |
ABS B |
CCS B |
BV B |
LR B |
NK B |
KR B |
|
DNV-GL AH36 |
High Strength |
ABS AH36 |
CCS AH36 |
BV AH36 |
LR AH36 |
NK AH36 |
KR AH36 |
|
DNV-GL FH36 |
High Strength |
ABS FH36 |
CCS FH36 |
BV FH36 |
LR FH36 |
NK FH36 |
KR FH36 |
|
DNV-GL F460 |
Extra High Strength |
ABS FQ47 |
CCS F460 |
BV F460 |
LR FH46 |
NK KF47 |
KR F47 |
Technical Advantages
Manufactured with low carbon equivalent (Ceq ≤0.38%) to assist in reducing pre-heating costs during shipyard welding and minimizing cold-cracking risks.
Refined through vacuum degassing to maintain low sulfur and phosphorus levels, supporting stable Charpy V-notch impact toughness down to -40°C for EH/FH grades.
Processed using 4-high reversing rolling mills to maintain tight thickness and flatness tolerances suitable for automated CNC cutting lines.
Inspected via 100% full-plate ultrasonic testing under standards such as ASTM A578 or EN 10160 to reduce internal lamination concerns before fabrication.
Project Applications
Shipbuilding: Hull structural plating, decks, bulkheads, and side shell structures for container ships, bulk carriers, tankers, and tugboats.
Offshore Structural Engineering: Jackets, topsides, legs, and hull sections for offshore drilling platforms, jack-up rigs, and FPSO units.
Marine & Ocean Equipment: Crane barges, offshore wind turbine foundations, hatch covers, and high-load structural brackets.
Quality Inspection & Testing
Chemical Analysis: Optical Emission Spectrometry (OES) per heat.
Mechanical Testing: Tensile, Yield, Elongation, and Charpy V-notch impact testing at designated temperatures (-20°C / -40°C).
Thickness & NDT Inspection: Ultrasonic Testing (UT Level II/S2) and digital gauge thickness tolerance verification.
Manufacturing Capability & Traceability
100% Full Heat Traceability: Every plate is hard-stamped with the Heat Number, Plate Number, DNV Brand Mark, and Steel Grade.
In-House Accredited Testing: ISO/IEC 17025 accredited laboratory equipped for chemical spectral analysis, tensile testing, Charpy V-notch impact testing, and metallographic examination.
On-Site DNV Inspection: Dedicated resident DNV surveyor protocols for fast turnaround on physical inspection, test witness, and EN 10204 3.2 certificate issuance.
Export Packaging & Anti-Corrosion
Surface Protection: Shot-blasting to Sa 2.5 followed by weldable shop-primer application.
Sea Freight Bundling: Heavy-duty steel strip bundling, edge protection guards, and weatherproof plastic wrapping for ocean shipping.
Physical Stamping: Clear weatherproof paint stenciling alongside official DNV hard stamps on every plate edge.
FAQ
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