In the realm of shipbuilding, the utilization of high-quality steel plates is paramount for ensuring the structural integrity and safety of vessels. Among the most trusted and reliable standards in this domain, DNV-GL certified VL DH690 and D690 steel plates stand out for their exceptional properties. These grades of steel, specifically designed for shipbuilding applications, exhibit superior chemical composition, mechanical properties, and heat treatment characteristics, making them ideal for a wide range of marine structures.

The chemical composition of VL DH690 and D690 steel plates is carefully controlled to ensure optimal performance. These steels are typically composed of carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, molybdenum, and vanadium, with precise allowances for each element to achieve the desired mechanical properties. The balanced chemistry allows for excellent weldability, corrosion resistance, and high strength, essential for marine environments.

In terms of mechanical properties, VL DH690 and D690 steel plates exhibit high yield strength and tensile strength, making them well-suited for withstanding the rigorous demands of the shipping industry. These steels also possess good ductility and toughness, ensuring that they can absorb impact forces and deform without fracturing.

The heat treatment state of these steel plates is another crucial aspect. Typically, VL DH690 and D690 steel plates undergo normalizing or quenching and tempering processes to achieve the desired mechanical properties. This heat treatment enhances the steel's microstructure, improving its overall performance.

Regarding dimensions, these steel plates are available in a wide range of thicknesses, widths, and lengths to meet the specific requirements of various shipbuilding projects. This versatility allows for the efficient utilization of materials and the fabrication of complex structures.

Impact testing is a crucial part of the quality assurance process for VL DH690 and D690 steel plates. These tests are performed to assess the steel's ability to resist low-temperature cracking, which is particularly important in cold environments. The steel plates typically meet or exceed the impact toughness requirements specified by DNV-GL, ensuring their reliability in extreme conditions.

The main applications for VL DH690 and D690 steel plates include the construction of hulls, decks, bulkheads, and other structural components of ships and marine vessels. Their high strength and corrosion resistance make them suitable for use in both freshwater and saltwater environments.

TJC Steel, a leading supplier of DNV-GL certified steel plates, has a rich history of supplying VL DH690 and D690 steel plates to shipbuilders worldwide. The company's strict quality control measures and commitment to customer satisfaction have earned it a reputation for reliability and excellence in the industry. Through its extensive network of suppliers and manufacturing facilities, TJC Steel is able to provide customers with a consistent and reliable supply of high-quality steel plates for their shipbuilding projects.

In conclusion, DNV-GL certified VL DH690 and D690 steel plates are an excellent choice for shipbuilding applications due to their superior chemical composition, mechanical properties, heat treatment characteristics, and impact toughness. With the reliable supply of TJC Steel, these steel plates are a trusted solution for ensuring the safety and durability of marine structures.