DNV-certified marine steel plates refer to high-performance structural steel plates certified by Det Norske Veritas (DNV), primarily used in shipbuilding, offshore engineering, specialised vessels and port machinery. This range of steel plates is divided into two grades: standard strength and high strength, and is suitable for operations in extreme marine environments ranging from traditional coastal cargo ships to vessels operating in Arctic ice zones and deep-sea platforms.
Our comprehensive range of DNV-certified marine steel plates offers stable tensile strength, excellent low-temperature toughness, good weldability and outstanding resistance to seawater corrosion. All products are officially certified by DNV and come with complete inspection reports and certification documents.
Furthermore, we offer customised processing services to meet client requirements, including Z-direction performance optimisation (Z15/Z25/Z35), surface anti-corrosion treatment, cutting and bending, thereby fully addressing the bespoke procurement needs of global shipbuilding and offshore engineering projects.
DNV ordinary-strength shipbuilding steel plates refer to structural steel plates for ship hulls with a minimum yield strength of 235 MPa and a tensile strength of 400 - 520 MPa. They are classified into four quality grades A, B, D and E based on their low-temperature impact toughness.
DNV ordinary-strength shipbuilding steel plates, owing to their excellent weldability and cost-effectiveness, are commonly used in non-high-load hull structures such as hulls, decks, bulkheads and superstructures of small and medium-sized inland waterway and coastal vessels, as well as in the construction of barges, floating structures and marine accessories.
For more detailed technical documentation or a quotation, please contact our sales team directly. Email: info@yx-steel.com
DNV high-strength shipbuilding steel plates are specifically designed for load-bearing structures in ship hulls. They are classified into four quality grades A, D, E and F based on their low-temperature impact toughness; each quality grade is further subdivided into several strength grades, such as 32, 36 and 40.
DNV high-strength shipbuilding steel plates combine high strength, high toughness, excellent weldability and corrosion resistance. They are primarily used in the main load-bearing structures of large and medium-sized ocean-going vessels (such as keels and sides), in critical load-bearing sections of container ships and bulk carriers, and in critical load-bearing structures of offshore platforms.
For more detailed technical documentation or a quotation, please contact our sales team directly. Email: info@yx-steel.com
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We are a professional manufacturer and supplier of high-quality DNV-certified shipbuilding steel plates. Our product range includes standard strength grades NV A, NV B, NV D, and NV E, as well as high-strength grades NV A32, NV A36, NV D32, NV D36, NV E32, and NV E36.
| Grade | Ambient Temperature | Applications |
|---|---|---|
| NV A | Room temperature (20 ℃) | Suitable for non-critical hull components, decks and auxiliary ship structures on inland waterway or coastal vessels, offering significant cost-effectiveness. |
| NV B | ≥ 0 ℃ | Widely used in the outer hull plating and bulkhead structures of coastal vessels. |
| NV D | ≥ - 20 ℃ | It is suitable for structural components of vessels operating in temperate coastal waters subject to frequent temperature fluctuations. |
| NV E | ≥ - 40 ℃ | It is suitable for use in critical structural components of ocean-going vessels, icebreakers, polar research vessels and deep-sea platforms operating in cold waters. |
| Grade | Ambient Temperature | Applications |
|---|---|---|
| NV A32 | ≥ 0 ℃ | It is primarily used for the main hull, decks, sides, frames and bottom structures of bulk carriers, oil tankers and container ships, as well as for general load-bearing structures on offshore platforms. |
| NV D32 | ≥ - 20 ℃ | |
| NV E32 | ≥ - 40 ℃ | |
| NV F32 | ≥ - 60 ℃ | |
| NV A36 | ≥ 0 ℃ | It is primarily used in load-bearing structures such as high-strength hulls, decks and bulkheads on various large vessels (including container ships, bulk carriers, oil tankers, polar vessels and icebreakers), as well as in the main structures of deep-sea oil and gas drilling platforms, polar offshore platforms, foundation platforms for offshore wind power projects, and Floating Production, Storage and Offloading (FPSO) vessels. |
| NV D36 | ≥ - 20 ℃ | |
| NV E36 | ≥ - 40 ℃ | |
| NV F36 | ≥ - 60 ℃ |
Each plate is accompanied by a DNV-certified Manufacturer’s Test Certificate (MTC) and is subject to third-party inspection.
We offer full customisation to your specifications, as well as value-added services such as cutting, surface polishing and anti-corrosion coating, alongside ultrasonic testing and Z-direction performance testing.
Supplied directly from the factory with ample raw material stock, we cater for both small trial orders and large-scale bulk purchases.
We support trade terms such as FOB, CFR and CIF. Leveraging our extensive experience in maritime logistics, we ensure global delivery of orders.
We offer competitive discounted prices to customers worldwide.
We offer 24/7 after-sales service and professional technical support.
Yes. We offer customisation of thickness, width and length, as well as further processing services such as laser cutting, surface polishing and rust removal, and anti-corrosion coating. In addition, we can provide Z-direction performance testing (Z15/Z25/Z35 grades) and ultrasonic testing (UT) in accordance with project requirements.
Yes. In addition to DNV certification, we can also accept verification from classification societies such as ABS, CCS, LR and BV, or third-party inspection bodies such as SGS, in accordance with your project requirements.
The MOQ is 5 tons.
Standard orders can be delivered within 10 - 15 days. For orders involving custom rolling or specific heat treatments (such as TMCP or Q+T), the lead time is typically 25 - 40 days.