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Steel Plates for Shipbuilding - Mill Direct Supplier
China
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 ton
Shipping total: To be negotiated
- Lead time:
- confirmed with the quotation
- Packaging:
- standard export packing
- Samples:
- available on request
Product details
Technical Specifications of Steel Plates for Shipbuilding and Construction
| Property | Parameter | Description |
|---|---|---|
| Product Name | Steel Plates for Shipbuilding and Construction | High-strength structural steel plates designed for marine and civil engineering applications |
| Material Grade | AH36 / DH36 / EH36 / A131 / S355J2 / Q345B / ASTM A36 | International equivalent grades: AH36 ≈ S355G7+N (EN); DH36 ≈ S355G8+N; EH36 ≈ S355G9+N |
| Standard Compliance | ASTM A131 / EN 10025-2 / GB/T 712 / JIS G3106 / LR / DNV / ABS / BV / CCS | Compliant with major classification society rules and international structural steel standards |
| Chemical Composition (C) | ≤ 0.18% | Low carbon content ensures good weldability and toughness for shipbuilding use |
| Chemical Composition (Mn) | 0.90% – 1.60% | Manganese enhances strength and hardenability of the steel plate |
| Chemical Composition (Si / P / S) | Si ≤ 0.50%; P ≤ 0.035%; S ≤ 0.035% | Controlled impurity levels to meet classification society and structural requirements |
| Tensile Strength | 490 – 620 MPa (AH36/DH36/EH36 per ASTM A131) | High tensile strength suitable for hull structures, offshore platforms, and heavy construction |
| Yield Strength | ≥ 355 MPa (Grade 36 series); ≥ 235 MPa (Grade A/B) | Minimum yield strength ensures structural integrity under static and dynamic loads |
| Elongation | ≥ 21% (longitudinal, 200 mm gauge length) | Adequate ductility to absorb impact energy and resist brittle fracture |
| Impact Toughness (Charpy) | AH36: 0°C ≥ 34 J; DH36: −20°C ≥ 34 J; EH36: −40°C ≥ 34 J | Low-temperature impact values per classification society requirements |
| Thickness Range | 5 mm – 150 mm | Wide thickness range covering thin deck plating to heavy keel and structural members |
| Width × Length | Width: 1,500 – 4,500 mm; Length: 3,000 – 18,000 mm | Custom cutting available; standard mill plates supplied in as-rolled or normalized condition |
| Surface Finish | As-rolled (AR), Normalized (N), TMCP, Shot-blasted Sa 2.5 | Surface treatment options available to meet coating and corrosion protection requirements |
| Application | Ship hulls, offshore structures, bridges, pressure vessels, heavy machinery, port facilities | |
| Certification | Mill Test Certificate (MTC) per EN 10204 3.1 / 3.2; Classification society certificates (LR, DNV-GL, ABS, BV, CCS, NK) | Third-party inspection and survey available upon request |
| Packaging | Bare / bundled with steel strips; rust-preventive oil coating; wooden dunnage for sea freight | Export seaworthy packaging compliant with ISPM 15 for wooden materials |
| MOQ | 25 MT per grade/thickness | Mixed grades accepted for full container or bulk vessel shipments; spot stock available |
Steel Plates for Shipbuilding - Mill Direct Supplier
Steel plates for shipbuilding and construction represent one of the most structurally demanding categories of flat-rolled steel products in global industrial markets. These plates must withstand extreme mechanical stress, prolonged saltwater exposure, and rigorous classification society requirements — making material selection a mission-critical decision for naval architects, structural engineers, and procurement managers alike. As a mill-direct supplier, we provide certified shipbuilding and structural steel plates across a comprehensive range of grades, thicknesses, and surface conditions, eliminating intermediary markups and ensuring full traceability from melt to delivery. Our inventory covers internationally recognized standards including ASTM, ABS, DNV, LR, BV, and EN specifications, allowing clients across marine, offshore, and heavy civil construction sectors to source precisely the grade they require. Whether you are outfitting a bulk carrier hull, fabricating offshore platform decking, or supplying structural panels for large-scale construction projects, our steel plates deliver the dimensional accuracy, mechanical consistency, and documentation integrity that modern projects demand.
What Are Steel Plates for Shipbuilding and Construction?
Steel plates for shipbuilding and construction are heavy flat steel products rolled to specific thicknesses, widths, and mechanical property requirements defined by classification societies and structural engineering standards. These plates serve critical roles in hull fabrication, deck plating, bulkheads, offshore structures, bridges, and industrial buildings. Common grades include AH36, DH36, EH36 for marine applications, and S355, A36, and A572 Gr.50 for structural construction use. Thicknesses typically range from 5 mm to 150 mm, with widths up to 4,200 mm depending on the rolling mill capability.
Steel Plates for Shipbuilding and Construction — Technical Specifications
Our steel plates for shipbuilding and construction are manufactured under strict quality control protocols and supplied with full mill test reports (MTR). Key mechanical and dimensional parameters are outlined below to support engineering evaluation and procurement decisions.
| Parameter | Shipbuilding Grade (e.g., DH36) | Structural Grade (e.g., S355J2) |
|---|---|---|
| Yield Strength | ≥ 355 MPa | ≥ 355 MPa |
| Tensile Strength | 490 – 620 MPa | 470 – 630 MPa |
| Elongation (min.) | 21% | 22% |
| Charpy Impact (at −20°C) | 34 J minimum | 27 J minimum |
| Thickness Range | 5 mm – 100 mm | 6 mm – 150 mm |
| Width Range | Up to 3,800 mm | Up to 4,200 mm |
| Density | 7.85 g/cm³ at 20°C | 7.85 g/cm³ at 20°C |
| Surface Condition | As-rolled / Shot-blasted SA 2.5 | As-rolled / Primed |
| Applicable Standards | ABS, DNV, LR, BV, GL, RINA | EN 10025, ASTM A572, GB/T 1591 |
| Carbon Equivalent (CE max.) | 0.38% | 0.43% |
All plates are available with third-party inspection (SGS, BV, TÜV), ultrasonic testing per EN 10160 or ASTM A435, and custom cutting to net shape. Outstanding anti-corrosion properties can be achieved through optional hot-dip galvanizing or specialized primer coatings applied before dispatch.
Get a Competitive Quote for Steel Plates for Shipbuilding and Construction
Partner with a mill-direct supplier that understands the technical and logistical demands of marine and structural steel procurement. We offer cost-effective pricing on bulk orders, fast lead times from bonded stock, and dedicated technical support to help you select the optimal grade for your application. Reach out to our team today and receive a tailored quotation backed by certified mill documentation.
- 24/7 customer support available
- Free samples for quality evaluation
- Competitive pricing for bulk orders
- Professional technical consultation
Contact us today to get your free quote within 24 hours!
