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| 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 |
Quality solid, but initial shipment had two plates with surface pitting — resolved quickly
We ordered 120 tonnes of A36 structural plates at 10 mm and 20 mm for an industrial warehouse project. The majority of the shipment was fine — dimensions accurate, MTRs in order per ASTM A36. However, two plates in the first delivery showed localised surface pitting that did not meet our as-rolled acceptance criteria. I raised this with the supplier and they arranged replacement plates within five business days at no additional cost and provided a written corrective action report. Issue is resolved and the replacements were perfect. Cautiously positive — response to the problem was professional.
We ordered 120 tonnes of A36 structural plates at 10 mm and 20 mm for an industrial warehouse project. The majority of the shipment was fine — dimensions accurate, MTRs in order per ASTM A36. However, two plates in the first delivery showed localised surface pitting that did not meet our as-rolled acceptance criteria. I raised this with the supplier and they arranged replacement plates within five business days at no additional cost and provided a written corrective action report. Issue is resolved and the replacements were perfect. Cautiously positive — response to the problem was professional.
