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GL (Germanischer Lloyd) steel plates are designed to meet the demanding requirements of marine and structural applications, classified into several categories based on strength and performance. General Strength grades, such as GL/A, GL/B, GL/D, and GL/E, provide foundational qualities for shipbuilding, offering good weldability and toughness for essential structures. For example, GL/A32 is a standard grade used in the construction of hulls and decks, while GL/D32 and GL/E32 cater to applications needing enhanced toughness for colder environments.



In the High Strength category, plates like GL/A36, GL/A40, GL/A420, and GL/A460 are designed for more demanding structural components. These high-strength plates are suitable for critical applications where increased durability and load-bearing capacity are necessary, making them ideal for shipbuilding and offshore structures. The Extra Strength grades, including GL/A500, GL/A550, GL/A620, and GL/A690, are engineered for severe service conditions, ensuring exceptional toughness and strength. These grades are often used in heavy-duty marine equipment and critical offshore structures.



Additional grades like GL/D500, GL/D550, GL/D620, and GL/D690 provide the same benefits for applications requiring high resilience under extreme conditions. Furthermore, GL steel plates feature grades such as GL/F32, GL/F36, GL/F40, and their respective E counterparts, which are designed for extreme environmental conditions and high-stress areas. These plates maintain superior strength and toughness, making them suitable for various marine applications, ensuring the reliability and safety of structures in harsh marine environments.


Grade Category Description Applications
GL/A General Strength Standard structural grade for shipbuilding Hull structures, decks, bulkheads
GL/A32 General Strength Standard grade for marine applications Ship hulls, offshore structures
GL/B General Strength Higher strength than GL/A Moderate structural applications
GL/D32 General Strength High toughness for colder environments Marine structures, cargo holds
GL/D36 General Strength Enhanced strength for marine applications Structural components in shipbuilding
GL/D40 General Strength High strength and toughness Critical ship components
GL/E General Strength Enhanced toughness for severe conditions Heavy-duty marine equipment
GL/E32 General Strength Extra toughness for demanding applications Critical components in harsh environments
GL/A36 High Strength High-strength steel for tougher applications Structural components in marine environments
GL/A40 High Strength Higher strength for demanding applications Critical ship components
GL/A420 High Strength High-strength grade for severe conditions Heavy-duty marine structures
GL/A460 High Strength Very high strength for extreme applications Critical offshore components
GL/A500 Extra Strength Ultra-high strength for severe service Heavy-duty marine and offshore structures
GL/A550 Extra Strength Exceptional strength for demanding applications Critical structures in harsh environments
GL/A620 Extra Strength Ultra-high strength for extreme conditions Heavy-duty offshore structures
GL/A690 Extra Strength Exceptional toughness for critical applications Heavy-duty marine equipment
GL/D420 High Strength Enhanced toughness and strength Marine structures in harsh conditions
GL/D460 High Strength Very high strength for critical applications Heavy-duty components in marine environments
GL/D500 Extra Strength Ultra-high strength for severe conditions Critical shipbuilding components
GL/D550 Extra Strength Extremely high strength for demanding applications Heavy-duty offshore structures
GL/D620 Extra Strength Ultra-high strength for critical applications Large-scale marine structures
GL/D690 Extra Strength Exceptional toughness for severe conditions Critical offshore components
GL/E36 General Strength Enhanced toughness for extreme environments Marine structures in harsh conditions
GL/E40 General Strength Superior strength for severe applications Heavy-duty marine components
GL/E420 High Strength Ultra-high strength for demanding applications Heavy-duty marine and offshore structures
GL/E460 High Strength Exceptional toughness and strength Critical shipbuilding applications
GL/E500 Extra Strength Very high strength suitable for critical applications Marine structures in severe environments
GL/E550 Extra Strength Extremely high strength for severe conditions Critical offshore structures
GL/E620 Extra Strength Ultra-high strength for the most demanding environments Heavy-duty marine structures
GL/E690 Extra Strength Exceptional toughness for extreme conditions Critical marine applications
GL/F32 General Strength High-strength steel for low temperatures Heavy-duty equipment in marine applications
GL/F36 General Strength Higher strength for severe conditions Critical components in shipbuilding
GL/F40 General Strength Superior toughness for extreme conditions Heavy-duty marine equipment
GL/F420 High Strength Exceptional strength and toughness Marine structures in harsh environments
GL/F460 High Strength Very high strength for demanding applications Heavy-duty offshore components
GL/F500 Extra Strength Ultra-high strength for severe service Critical marine applications
GL/F550 Extra Strength Exceptional toughness for severe conditions Heavy-duty components in offshore structures
GL/F620 Extra Strength Ultra-high strength for the most demanding applications Large-scale marine structures
GL/F690 Extra Strength Superior strength for critical applications Heavy-duty marine equipment



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