AH36/DH36/EH36
Thickness: 4mm to 260mm, Width: 1200mm to 4000mm Length: 3000mm to 18000mm.
AH36/DH36/EH36 High-Strength Marine Steel Plates
Product Overview
AH36, DH36, and EH36 are advanced high-tensile shipbuilding steels certified by leading classification societies (ABS, DNV, CCS, LR, etc.). Designed for demanding marine environments, these grades deliver exceptional strength, low-temperature toughness, and corrosion resistance, making them ideal for critical ship structures and offshore platforms.
Manufacturing Excellence
- Controlled Rolling & Cooling (TMCP): Ensures uniform mechanical properties and eliminates preheating for plates ≤30mm
- Heat Treatment: Normalizing or quenching for thickness >50mm to enhance weldability
- Surface Treatment: Shot blasting (SA 2.5 finish) and anti-rust painting for corrosion resistance
Applications
- Shipbuilding: Hulls, decks, bulkheads (AH36); LNG carrier components (EH36); icebreaker vessels (DH36)
- Offshore Engineering: Oil rigs, subsea pipelines (DH36/EH36)
- Infrastructure: Bridges, pressure vessels, and high-rise steel structures
Certifications & Standards
- Classification Societies: ABS, DNV, CCS, LR, BV, NK, KR, RINA, and others
- Testing Protocols:
- Ultrasonic inspection for internal defects.
- Charpy V-notch impact tests at specified temperatures
- CTOD (Crack Tip Opening Displacement) tests for critical applications
Customization & Dimensions
- Thickness: 5–150mm (up to 300mm for special orders)
- Width: Up to 3,900mm (ideal for large hull sections)
- Processing: Flame cutting, laser cutting, and bending (cold/hot)
Welding & Fabrication Guidelines
- Preheating Requirements:
- Plates >30mm: Preheat to 120–150°C before welding
- Ambient Temp <5°C: Preheat to 75°C for plates ≤30mm
- Welding Methods: SMAW, SAW, and FCAW with compatible electrodes
Industry Trends & Advantages
- High-Strength Demand: Rising use of 5m-wide plates and 200–300mm thick boards for mega-container ships and polar-class vessels
- Sustainability: Reduced material consumption due to higher strength-to-weight ratios
Why Choose AH36/DH36/EH36?
- Certified Quality: Globally recognized by 10+ classification societies
- Extreme Environment Performance: EH36 withstands -40°C, DH36 excels in Arctic condition
- Cost Efficiency: Thinner plates reduce weight while maintaining strength
- End-to-End Support: Mill test reports, Z-certification, and custom packaging
Contact us for technical datasheets or tailored solutions.
Built for the harshest seas, trusted by global shipyards.
Frequently asked questions
Do you keep large quantities in stock monthly?
Yes, we are Baosteel's long-term first-level dealer, always keeping a large amount of steel in stock, and give priority to ordering and scheduling production at Baosteel Group as well as Xingcheng Special Steel.
Can we visit your office and the warehouse?
Of course, we welcome you to visit our office and warehosue. We can also show you all all the production lines of steel mills we cooperated with to more about our capacity and quality.
Do you have quality control system?
We have ISO, BV, SGS certifications and cand conduct product performance testing based on customer requirements.
Can you provide steel processing services?
We have multiple warehouses with long-term agreements, able to provide high-quality processing and packaging services to meet your requirement.
What are the payment methods?
We accept T/T and L/C. For other payment methods, please contact us for further communication.
How long is your delivery time?
For goods in stock , it takes 3 to 7 days.If we need to order from steel mills, it will take around 25-45 days depends on the specific products and different steel mills.
How do you keep long-term business and good relationship?
We always keep supplying good quality products with competitive prices and provide one stop service.We wish to establish long-term cooperative relationships with you, to achieve the best interests and to become the true friends.