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Width: up to 4,000 mm
Length: customized
Grades: A, B, D, E, AH/DH/EH32, AH/DH/EH36
Wuxi Jietai Machinery Trade Co., Ltd. is one of the most professional shipbuilding steel plate manufacturers and suppliers in China. Welcome to wholesale customized shipbuilding steel plate at competitive price from our factory. Good service and quality products are available.
Shipbuilding steel plate is a specialized, high-quality steel designed for building marine vessels, offering exceptional strength, toughness, and corrosion resistance to withstand harsh ocean conditions, large wave forces, and saltwater environments, with common grades like A, B, D, E, AH36, DH36, and EH36 meeting strict standards from classification societies for hull construction and offshore structures.
What Is Shipbuilding Steel Plate?
Shipbuilding steel plate is a type of marine structural steel specifically developed for ship hulls and offshore structures. Compared with ordinary structural steel, it features:
- High tensile strength
- Excellent low-temperature impact toughness
- Good weldability
- Resistance to seawater corrosion and fatigue
These properties make shipbuilding steel plates suitable for long-term service under dynamic loads, low temperatures, and corrosive marine conditions.
Shipbuilding Steel Classification:
The Shipbuilding steel plate can be divided into general strength structural steel and high strength structural steel according to its minimum yield point strength level.
Wuxi Jietai Machinery Trade Co., Ltd. supplies and exports 2 types of ship steel, medium strength shipbuilding plate and high strength shipbuilding plate. All steel plate product can be manufactured according to Society LR, ABS, NK, GL, DNV, BV, KR, RINA, CCS, etc.
Shipbuilding Steel Plate Development
Shipbuilding requires large quantities of structural steel plate to build to ship hull. Ship steel has developed into 2 series: high strength and corrosion resistant steels for modern shipbuilding, which can reduce the ship weight as well as maintenance cost. Wuxi Jietai Machinery Trade Co., Ltd. is able to supply high strength steel plate for Large container ships construction.
Shipbuilding traditionally uses structural steel plate to fabricate ship hulls. Modern steel plates have much higher tensile strengths than their predecessors, making them much better suited to the efficient construction of large container ships. Here are the Advantages of Shipbuilding Plates High corrosion resistant steel plate is perfect steel type for oil tanks, and when used in shipbuilding, ship weight is less for the same capacity ships, fuel cost and CO2 emission can be reduced.
These shipbuilding steel can also be used for offshore structures, if you are looking for shipbuilding steel plate or offshore structure steel plate, Contact Wuxi Jietai Machinery Trade Co., Ltd. now for the latest quotation.
Common Grades of Shipbuilding Steel Plate
Shipbuilding steel plates are usually classified by strength level and impact test temperature, and certified by classification societies.
Normal Strength Shipbuilding Steel
Grades
A, B, D, E
Features
Yield strength ≥ 235 MPa
Good weldability and formability
Applications
Ship hull structures
Decks and bulkheads
High Strength Shipbuilding Steel
Grades
AH32 / DH32 / EH32
AH36 / DH36 / EH36
AH40 / DH40 / EH40
Features
Higher strength-to-weight ratio
Improved impact toughness at low temperatures
Applications
Large vessels
Container ships
Oil tankers
Offshore platforms
Classification Society Standards
Shipbuilding steel plates are typically produced under approvals from major classification societies, including:
ABS – American Bureau of Shipping
DNV – Det Norske Veritas
LR – Lloyd’s Register
BV – Bureau Veritas
CCS – China Classification Society
NK – Nippon Kaiji Kyokai
KR – Korean Register
Wuxi Jietai Machinery Trade Co., Ltd. can supply shipbuilding plates with mill test certificates and classification society approval upon request.
Chemical Composition and Products Description
Grade and Chemical Composition (%)
| Grade | C%≤ | Mn % | Si % | p % ≤ | S % ≤ | Al % | Nb % | V % |
|---|---|---|---|---|---|---|---|---|
| A | 0.22 | ≥ 2.5C | 0.10~0.35 | 0.04 | 0.40 | – | – | – |
| B | 0.21 | 0.60~1.00 | 0.10~0.35 | 0.04 | 0.40 | – | – | – |
| 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 0.90~1.60 0.90~1.60 | 0.10~0.50 | 0.04 | 0.04 | ≥0.015 | – | – |
| A36 D36 E36 | 0.18 | 0.70~1.60 0.90~1.60 0.90~1.60 | 0.10~0.50 | 0.04 | 0.04 | ≥0.015 | 0.015~0.050 | 0.030~0.10 |
Shipbuilding Steel Plate Mechanical Properties
| Grade | Thickness (mm) |
Yieldpoint (Mpa) ≥ |
Tensile Strength (Mpa) |
Elongation (%)≥ |
V-impact test | cold bend test | |||
|---|---|---|---|---|---|---|---|---|---|
| Temperature (℃) |
Average AKV A kv /J |
b=2a 180° |
b=5a 120° |
||||||
| 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 | ||||||||
Main Applications of Shipbuilding Steel Plate
1. Core Components of Ship Hull Structures
This is the primary application scenario of shipbuilding steel plate, covering key structures from the exterior to the interior of the hull:
Hull bottom plates: High-strength AH32/AH36 grade steel plates are selected to withstand hydrostatic pressure and impact from seabed reefs. They require high yield strength and corrosion resistance, with a typical thickness of 12mm-30mm;
Hull side plates: Resist lateral wave impact and seawater corrosion. DH32/DH36 grade steel plates are used for their balanced strength and toughness, suitable for the harsh navigation environment of ocean-going ships;
Deck plates: Bear the weight of cargo, equipment, and personnel, requiring wear resistance and fatigue resistance. EH36 grade steel plates are commonly used, with thickness up to 16mm-40mm depending on ship tonnage;
Bulkheads and keels: As the load-bearing framework and waterproof partition structure of the hull, a combination of high strength and high toughness (e.g., EH36+FH36) is adopted to ensure hull unsinkability and structural stability.
2. Marine Engineering Equipment Manufacturing
Beyond ships, shipbuilding steel plate is widely used in marine engineering structures, especially suitable for high-stress and high-corrosion offshore environments:
Offshore platforms: Including decks, legs, and jackets of drilling platforms and production platforms. EH36/FH40 grade thick plates (thickness 50mm-150mm) are selected to withstand wind, wave, and ocean current impacts, as well as long-term seawater erosion;
Subsea pipelines and risers: Low-alloy shipbuilding steel plates with enhanced corrosion resistance are used, combined with anti-corrosion coatings, for structural support of deep-sea oil and gas transmission pipelines;
Offshore wind turbine foundations: Bear the weight of wind turbines, wind loads, and wave impacts. High-strength shipbuilding steel plates are used to manufacture piles and pile caps, ensuring long-term structural stability.
3. Specialized Scenarios for Customized Ships
Targeting the personalized needs of different ship types, shipbuilding steel plate provides customized solutions:
LNG carriers: To transport cryogenic liquefied natural gas at -165℃, FH36/FH40 grade ultra-low temperature toughness steel plates are selected to ensure no brittle fracture in cryogenic environments and good welding tightness;
Icebreakers/polar ships: Operating in polar ice zones, FH40 grade ultra-high strength steel plates (yield strength ≥390MPa) are used with thickened design (thickness 30mm-60mm) to resist ice extrusion and collision;
Container ships/bulk carriers: Pursuing high load ratio and fuel efficiency, AH36/EH36 grade lightweight high-strength steel plates are selected to reduce hull weight while ensuring structural strength, improving load capacity.
4. Port Machinery and Marine Auxiliary Equipment
Port cranes and container gantry cranes: The main beams, legs, and other load-bearing structures are made of shipbuilding steel plate, leveraging its high strength and fatigue resistance to adapt to the load impact of frequent lifting;
Ship spare parts and maintenance: Used in ship deck renovation, hull welding repair, cabin modification, and other maintenance scenarios. Steel grades and specifications matching the original ship are provided to ensure structural consistency after maintenance.
Wuxi Jietai Machinery Trade Co., Ltd. Shipbuilding Plate Supply Capability
Wuxi Jietai Machinery Trade Co., Ltd. supplies shipbuilding steel plates with:
Thickness: 6–150 mm
Width: up to 4,000 mm
Length: customized
Grades: A, B, D, E, AH/DH/EH32, AH/DH/EH36
Delivery condition: AR / Normalized / TMCP
Certification: EN 10204 3.1 / 3.2 + Class approval
Shipbuilding Plate Dimensions
Shipbuilding Plate Available Dimensions:
| variety | Thickness (mm) | Width (mm) | Longth/ inner diameter (mm) | |
|---|---|---|---|---|
| Shipbuilidng plate | cutting edges | 6~50 | 1500~3000 | 3000~15000 |
| non- cutting edges | 1300~3000 | |||
| Shipbuilidng coil | cutting edges | 6~20 | 1500~2000 | 760+20~760-70 |
| non-cutting edges | 1510~2010 | |||
Shipbuilding Steel Theoretical Weight
| Thickness (mm) | theoretical weight | Thickness (mm) | theoretical weight | ||
|---|---|---|---|---|---|
| Kg/ft2 | Kg/m2 | Kg/ ft2 | Kg/m2 | ||
| 6 | 4.376 | 47.10 | 25 | 18.962 | 196.25 |
| 7 | 5.105 | 54.95 | 26 | 20.420 | 204.10 |
| 8 | 5.834 | 62.80 | 28 | 21.879 | 219.80 |
| 10 | 7.293 | 78.50 | 30 | 23.337 | 235.50 |
| 11 | 8.751 | 86.35 | 32 | 25.525 | 251.20 |
| 12 | 10.21 | 94.20 | 34 | 26.254 | 266.90 |
| 14 | 10.939 | 109.90 | 35 | 27.713 | 274.75 |
| 16 | 11.669 | 125.60 | 40 | 29.172 | 314.00 |
| 18 | 13.127 | 141.30 | 45 | 32.818 | 353.25 |
| 20 | 14.586 | 157.00 | 48 | 35.006 | 376.80 |
| 22 | 16.044 | 172.70 | 50 | 36.464 | 392.50 |
| 24 | 18.232 | 188.40 | |||
Dimensional Deviation
| nominal thickness(mm) | The thickness deviation with following width (mm) | |||
|---|---|---|---|---|
| ≤1200 | >1200~1500 | >1500~1800 | >1800 | |
| >6.0~8.0 | ±0.29 | ±0.30 | ±0.31 | ±0.35 |
| >8.0~10.0 | ±0.32 | ±0.33 | ±0.34 | ±0.35 |
| >10.0~12.0 | ±0.35 | ±0.36 | ±0.37 | ±0.43 |
| nominal thickness(mm) | minus deviation (mm) | The thickness deviation with following width (mm) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| > 1000 ~1200 | > 1200 ~1500 | > 1500 ~1700 | > 1700 ~1800 | > 1800 ~2000 | > 2000 ~2300 | > 2300 ~2500 | > 2500 ~2600 | 2600 ~2800 | > 2800 ~3000 | ||
| >12~25 | -0.8 | +0.2 | +0.2 | +0.3 | +0.4 | +0.6 | +0.8 | +0.8 | +1.0 | +1.1 | +1.2 |
| >25~30 | -0.9 | +0.2 | +0.2 | +0.3 | +0.4 | +0.6 | +0.8 | +0.9 | +1.0 | +1.1 | +1.2 |
| >30~34 | -1.0 | +0.2 | +0.3 | +0.3 | +0.4 | +0.6 | +0.8 | +0.9 | +1.0 | +1.2 | +1.3 |
| >34~40 | -1.1 | +0.3 | +0.4 | +0.5 | +0.6 | +0.7 | +0.9 | +1.0 | +1.1 | +1.3 | +1.4 |
| >40~45 | -1.2 | +0.4 | +0.5 | +0.6 | +0.7 | +0.8 | +1.0 | +1.1 | +1.2 | +1.4 | +1. |