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CCS Grade DH36 Shipbuilding Steel Plate - Certified High-Strength Marine Steel

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Our CCS DH36 shipbuilding steel plates have been fully certified by the China Classification Society (CCS). With excellent yield strength and low-temperature impact toughness, they are capable of withstanding harsh marine environments, making them an ideal choice for the shipbuilding and offshore engineering sectors. We provide high-strength, highly reliable marine steel plates for your shipbuilding or offshore projects.

Certification :
CCS Rules
Standard :
GB/T 712
Grade :
CCS Grade DH36 (CCSDH36)
Thickness :
5.0 - 150.0 mm
Width :
1500.0 - 3950.0 mm
Length :
6000.0 - 18000.0 mm

Special thickness, width, and length can be negotiated separately.
We also provide customized processing services.If you have any questions, please contact us.

Overview

1. What Is CCS DH36 Shipbuilding Steel Plate?

CCS DH36 shipbuilding steel plate is a high-strength structural steel for marine applications certified by the China Classification Society (CCS). It features high structural strength, excellent low-temperature toughness, good weldability, and a certain degree of resistance to seawater corrosion. This material is widely used in shipbuilding, offshore engineering, and offshore energy projects.

We offer CCS DH36 shipbuilding steel plates in a full range of specifications, supporting hot-rolled, normalized, and TMCP heat treatment processes. All products have passed rigorous CCS certification, are backed by a comprehensive quality control system, and are subject to third-party inspection. Additionally, we provide custom processing services to meet the diverse procurement needs of shipyards and offshore engineering projects worldwide.

2. Meaning of the Designation

CCS: Certified by the China Classification Society

D: Quality Grade D (requiring impact toughness at -20°C)

H: High-strength steel

36: Minimum yield strength: 355 MPa (≈ 36 kgf/mm²)

Available Specifications and Dimensions

Product	CCS Grade DH36 Shipbuilding Steel Plate
Certification	CCS
Grade	DH36
Material Category	Heigh-Strength Structural Steel for Ship and Ocean Engineering
Thickness	5 - 150 mm
Width	1500 - 3950 mm
Length	6000 - 18000 mm
Delivery Conditions	Hot Rolled (HR), Controlled Rolled (CR), Normalized (N), Thermo-Mechanical Controlled Processed (TMCP).
Surface Conditions	The surface is in its original condition; surface treatments such as sandblasting, rust removal, oiling and painting are available.
Testing	Tensile test, Charpy V-notch impact test, Ultrasonic testing (UT), Z-direction property test (Grades Z15/Z25/Z35), Dimensional inspection.
Applications	Key structures in shipbuilding, offshore engineering, marine machinery, and port engineering facilities, etc.
MOQ	50 tons (small orders can be negotiated).
Delivery Time	15 - 20 days after order confirmation (urgent orders accepted).
Packaging	Standard export packaging for sea transport, or as required.
Country of Origin	China

Chemical Composition

Chemical Composition (Heat Analysis, wt %)

Grade	C	Si	Mn	P	S	Cu	Cr	Ni	Nb	V	Ti	Mo	Als
CCS DH36	≤ 0.18	≤ 0.50	0.90 - 1.60	≤ 0.025	≤ 0.025	≤ 0.35	≤ 0.20	≤ 0.40	0.02 - 0.05	0.05 - 0.10	≤ 0.02	≤ 0.08	≥ 0.015

Carbon Equivalent (wt %)

Thickness (mm)	5 - 50	50 - 150
Typical CEV (wt %)	≤ 0.38	≤ 0.40

Calculation formula (IIW): CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15

Mechanical Properties

Tensile Test

Grade	Yield Strength (ReH), MPa	Tensile Strength (Rm), MPa	Elongation (A), %
CSS DH36	≥ 355	490 - 630	≥ 21

Charpy (V-notch) Impact Test

Grade	Thickness, mm	Temperature, ℃	Impact Energy, KV₂ / J
Grade	Thickness, mm	Temperature, ℃	Longitudinal	Transverse
CCS DH36	≤ 50	0	≥ 34	≥ 24
	> 50 - 70	0	≥ 41	≥ 27
	> 70 - 150	0	≥ 50	≥ 34

Applications

CCS DH36 shipbuilding steel plates are used in shipbuilding, offshore engineering, and marine support facilities. Specific applications include the following:

1. Shipbuilding

Critical structural components of bulk carriers, container ships, cargo ships, and passenger ships, including hull keels, decks, frames, bulkheads, and supports.

2. Offshore Engineering

Fixed offshore platforms, floating production, storage, and offloading (FPSO) units, and deep-sea wind farm structures.

3. Marine Support Facilities

Dock barges, offshore crane bases, breakwater structures, and ship repair and component replacement.

4. Special Marine Projects

Polar transport vessels and deep-sea exploration equipment requiring low-temperature resistance.

Other Information

Advantages of Our CCS DH36 Shipbuilding Steel Plates

1. Excellent Low-Temperature Toughness

Suitable for polar and deep-sea low-temperature environments, effectively addressing fatigue damage issues in hull structures under extreme weather conditions.

2. High Structural Mechanical Properties

With a minimum yield strength of 355 MPa and tensile strength ranging from 490 to 630 MPa, this steel can withstand heavy loads and intense external impacts, making it ideal for critical pressure-bearing components in large vessels.

3. Excellent Weldability and Formability

Carbon equivalent (CEV) ≤ 0.40%, with low weld cracking susceptibility. Compatible with conventional welding processes and requires no special preheating.

4. Enhanced Resistance to Seawater Corrosion

A specialized alloy composition enhances resistance to seawater corrosion and marine atmospheric erosion, extending the service life of ship hulls and offshore structures.

5. Comprehensive Certification Support

Officially certified by CCS, with complete test reports (chemical composition, mechanical properties, impact testing), supporting customs clearance and third-party inspections for global marine projects.

Our Services and Delivery

As a professional exporter of CCS-certified marine steel plates, we offer a one-stop procurement solution for CCS-class DH36 shipbuilding steel plates:

1. Quality Assurance

We implement strict quality control throughout the entire process, from raw materials to finished products.

2. Custom Processing

We provide value-added services such as cutting, shot blasting, painting, drilling, and heat treatment.

3. Flexible Minimum Order Quantities

We support both small-batch sample orders and large-volume commercial orders to meet diverse procurement needs.

4. Fast Delivery

We maintain a stock of ready-to-ship inventory for immediate fulfillment; delivery for custom products is 15–20 days.

5. Global Logistics

Through long-term partnerships with multiple international shipping companies, we provide door-to-door transportation to major ports worldwide.

6. After-Sales Support

We offer 24/7 after-sales service and professional technical support.

FAQ

# 1Q:What are the delivery conditions for CCS DH36 shipbuilding steel plates?

Depending on your project requirements, we supply CCS DH36 shipbuilding steel plates in normalized (N), thermomechanically controlled process (TMCP), controlled rolled (CR) or hot rolled (HR) conditions.

# 2Q:Can you customize the dimensions of CCS DH36 shipbuilding steel plates?

Of course. We can customize dimensions, heat treatment, and surface treatment based on customer drawings to meet the specific construction requirements of various marine projects.

# 3Q:What is the difference between CCS DH36 and CCS AH36?

The DH36 has better low-temperature toughness (impact at -20°C) than the AH36 (impact at 0°C), making it suitable for cold waters.

# 4Q:What is the difference between CCS DH36 and ABS DH36?

The CCS DH36 and ABS DH36 have consistent key mechanical properties: a minimum yield strength of 355 MPa and a tensile strength range of 490 - 630 MPa.

The difference between the two lies in the certifying classification societies: CCS stands for China Classification Society, and ABS stands for American Bureau of Shipping.

Both materials are widely recognized and accepted by the international shipbuilding industry.