AH36 LR Marine Steel Plate

Here are some shipbuilding cases:

 

Case of a Bulk Carrier

 

Description: A large - scale bulk carrier was constructed. The ship's bottom, sides, and main deck were made of AH36 marine steel plates.

Reason for Using AH36: Given the heavy cargoes that the bulk carrier needed to transport, such as iron ore and coal, the areas like the bottom had to endure high stress from the weight of the cargo and the hydrostatic pressure. The sides needed to withstand impacts from waves and possible collisions during loading and unloading at ports. The main deck had to support the weight of loading equipment and the cargo being moved around. AH36 steel plates, with their yield strength of not less than 355MPa and good toughness, provided the necessary strength and durability.

Result: The bulk carrier has been in service for several years and has shown excellent performance in various sea conditions, with no reported structural failures in the areas constructed with AH36 plates.

 

Case of an Offshore Supply Vessel

 

Description: An offshore supply vessel designed to operate in harsh offshore environments. The hull structure, including the bow and stern sections, was fabricated using AH36 steel plates.

Reason for Using AH36: This type of vessel operates in areas with rough seas and strong currents. The bow is constantly exposed to the impact of waves and the possibility of colliding with floating objects. The stern endures the thrust from the propulsion system and vibrations. AH36 steel plates' high tensile strength (between 490 - 630MPa) and impact resistance made them suitable for these critical areas.

Result: The offshore supply vessel has been able to operate reliably, ensuring the timely delivery of supplies and personnel to offshore oil and gas platforms. The hull structure has remained intact, demonstrating the effectiveness of using AH36 steel plates in this challenging application.

 

Case of a Container Ship

 

Description: A medium - sized container ship was built. The hatch coamings and the supporting structures around the hatches were made of AH36 steel plates.

Reason for Using AH36: During the loading and unloading of containers, the hatch areas experience concentrated stresses due to the weight of the containers being lifted and placed. Also, during the ship's voyage, the hatches are subjected to wave forces. AH36 steel plates' ability to resist deformation and their good mechanical properties made them an ideal choice for these areas.

Result: The container ship has been operating smoothly, and the hatch areas have shown no signs of structural damage, enabling efficient loading and unloading operations.

 

 

 

Specification we supply：

Thickness	3-200mm
Width	1500-4000mm
Length	5000-15000mm

 

 

The following are some methods for selecting AH36 marine steel plates suitable for shipbuilding:

 

From the perspective of quality certification

 

Classification society certification inspection

Ensure that the AH36 marine steel plates have certifications from authoritative classification societies (such as LR - Lloyd's Register, ABS - American Bureau of Shipping, DNV - Det Norske Veritas, etc.). These classification societies conduct strict reviews on the production process, quality control system, etc. of the steel plates. For example, the AH36 steel plates certified by LR need to meet its specific quality standards and production specifications. Every link from the selection of raw materials to the production process is strictly controlled to ensure the reliability and safety of the steel plates in shipbuilding.

 

 

From the aspect of mechanical properties

 

Strength test verification

According to the ship's design load and usage environment, test and verify the strength performance of the AH36 steel plates. For the key structural parts of large cargo ships (such as the bottom and sides), since they need to bear large cargo weights and water pressure, AH36 steel plates with stable yield strength and tensile strength that meet the standards should be selected. The strength of the steel plates can be verified by sampling tensile tests to ensure that they can withstand the expected stress in actual use.

Toughness evaluation

Considering the low - temperature environment and impact load that the ship may face, evaluate the impact toughness of the AH36 steel plates. For example, for ships sailing in cold sea areas, it is necessary to select AH36 steel plates that still have good impact toughness under low - temperature conditions (such as - 20 °C or lower). The low - temperature impact toughness test data of the steel plates, such as the Charpy V - notch impact test results, can be referred to judge their ability to resist brittle fracture in a low - temperature environment.

 

From the aspect of chemical composition

 

Composition compliance analysis

Analyze whether the chemical composition of the AH36 steel plates meets the standard requirements. In addition to paying attention to the content of main elements (such as carbon, manganese, silicon, etc.), also pay attention to the content of impurity elements such as sulfur (S) and phosphorus (P). For example, the content of sulfur and phosphorus should be strictly controlled within the range of not exceeding 0.035% respectively, because excessive sulfur and phosphorus will reduce the toughness and welding performance of the steel plates.

Alloy element consideration

According to the special usage requirements of the ship, consider the addition of alloy elements in the AH36 steel plates. For example, for ships sailing in sea areas with a relatively severe corrosive environment (such as high - salinity sea areas), AH36 steel plates with an appropriate amount of corrosion - resistant alloy elements (such as chromium, nickel, etc.) added can be selected to improve their corrosion resistance.

 

 

 

 

 

 

Why Choose Us?
We take pride in our ability to provide custom solutions for our customers' unique needs.
We analyze and compare the previous products and the current technical situation of our AH36 LR Marine Steel Plate, and develop new technical specifications and processes.
Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.
We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.
We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.
Our factory is committed to upholding the highest standards of safety and quality.
All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.
Our Cold-rolled Steel products are known for their durability and reliability.
 

 

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