What is CCS shipbuilding steel?
CCS shipbuilding steel refers to a specific category of hot-rolled steel products-such as plates, sheets, and sections-that are manufactured according to the rigorous standards set by the China Classification Society (CCS) for use in hull structures . It is essentially steel that has been approved by CCS for shipbuilding.
To be designated as CCS steel, the material must comply with the requirements detailed in the CCS rules, primarily the "Rules for Materials and Welding" and the "Rules for Steel Ships" . These specifications govern everything from chemical composition and mechanical properties to testing and inspection procedures. It's a "guarantee" of quality and safety for marine applications.
Key Classification of CCS Shipbuilding Steel
| Category | Strength Level | Quality Grades | Typical Yield Strength (MPa) | Typical Tensile Strength (MPa) |
|---|---|---|---|---|
| General Strength Steel | 235 MPa | A, B, D, E | ≥ 235 | 400 - 520 |
| High Strength Steel | 315 MPa | A32, D32, E32, F32 | ≥ 315 | 440 - 570 |
| 355 MPa | A36, D36, E36, F36 | ≥ 355 | 490 - 630 | |
| 390 MPa | A40, D40, E40, F40 | ≥ 390 | 510 - 660 |
General Strength Steel: With a minimum yield strength of 235 MPa, this steel is further divided into four quality grades-A, B, D, and E. The key difference between these grades is their impact toughness at low temperatures. For instance, 'A' grade is tested at 0°C, while 'E' grade must maintain toughness at -40°C, making it suitable for vessels operating in colder climates .
High Strength Steel: This category offers higher yield strengths (e.g., 315, 355, 390 MPa) for building larger and more advanced ships, allowing for lighter structures. The grades-such as A32, D36, or F40-combine a strength level (the number) with a toughness grade (the letter), which again indicates the temperature at which it retains impact resistance (A: 0°C, D: -20°C, E: -40°C, F: -60°C) .
How to Identify CCS Steel
The official certificate accompanying the steel will bear the CCS approval stamp and the signature of a CCS surveyor. It will also explicitly state the CCS grade (e.g., CCS-A, CCS-D32).
Physical Markings on the Steel
The steel itself will be marked with:
The CCS approval mark.
Paint-framed or stenciled information including the steel grade, dimensions, and heat/batch number.
Inquiring about the export qualifications of the intended company, as well as whether it has long-term cooperative clients, especially regarding the CCS ship plates project.
why choose us?
We promise to provide genuine and verifiable factory certification certificates from the China Classification Society (CCS steel) and product inspection certificates along with the goods. This is a crucial requirement for the shipyard's warehouse acceptance process.
Common specifications (CCS 6-40mm) are in ample supply and can be cut to any length as per customer requirements. This feature helps shipyards reduce waste from leftover materials and lower procurement costs.
Based on the size of the order and the history of cooperation, we can offer competitive payment terms to help the shipyard optimize its cash flow.
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Choose YUXIN steel group, and what you purchase is not merely the steel plates, but also a complete warranty system and a sense of responsibility.
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Tianjin, China
Phone Number
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FAQ
01.How are the names of the ship plates determined? For example, what does CCS A mean?
A: Indicates that the strength level is of general strength. The general strength steel plates are divided into four grades: A, B, D, and E. The main difference lies in the test temperature for impact toughness (grade A at 0°C, grade B at 20°C, grade D at -20°C, and grade E at -40°C).
02.When purchasing the ship plates, what documents can you provide?
Traceability: The furnace number and batch number on the certificate must be consistent with the physical markings on the steel plate.
Data: It must include actual measured data such as chemical composition, mechanical properties (yield, tensile strength, impact value), etc.
03.What is the minimum order quantity?
04.Can you provide cutting and processing services?
China one-stop steel processing procurement
Through years of understanding and precipitation of steel, Yuxin Group has now become a mature steel processing and manufacturer, providing various products for many construction companies and steel structure companies around the world. Thanks to Yuxin Group's professionalism and integrity, it has become a world-renowned enterprise.
