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Shipbuilding steels are steels specially developed and approved by the China Classification Society (CCS) for shipbuilding.
shipbuilding steels typically include various grades of structural steel with special mechanical properties such as high strength and excellent weldability to meet the demanding requirements of shipbuilding. These steels are used to make various ship components, including hulls, decks and superstructures.
Specific grades of CCS shipbuilding steels may vary depending on the requirements for the vessel being built. Some commonly used CCS grades include CCS A, CCS B, CCS D, CCS E and others. These grades are usually followed by a number indicating the yield strength of the steel, such as CCS A550 or CCS B620.
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CCS A |
CCS B |
CCS D |
CCS E |
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CCS AH32 |
CCS DH32 |
CCS EH32 |
CCS EH32 |
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CCS AH36 |
CCS DH36 |
CCS EH36 |
CCS FH36 |
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CCS AH40 |
CCS DH40 |
CCS EH40 |
CCS FH40 |
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CCS AQ47 |
CCS DQ47 |
CCS EQ47 |
CCS FQ47 |
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CCS AQ51 |
CCS DQ51 |
CCS EQ51 |
CCS FQ51 |
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CCS AQ56 |
CCS DQ56 |
CCS EQ56 |
CCS FQ56 |
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CCS AQ63 |
CCS DQ63 |
CCS EQ63 |
CCS FQ63 |
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ABS AQ70 |
CCS DQ70 |
CCS EQ70 |
CCS FQ70 |
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UT (Ultrasonic testing)
AR (hot rolled only)
TMCP (thermomechanical control treatment)
N (normalized)
Q+T (quenching and tempering)
Test in Z direction (Z15, Z25, Z35)
Charpy V-Notch impact test
testing (such as SGS)
Coating or shot blasting and painting
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GNEE can provide the following shipbuilding steel CCS measurement services:
1. Dimensional Measurement: Measuring dimensional parameters such as length, width and thickness using measuring instruments to ensure that the steel sheet is qualified and meets the design requirements.
2. Surface measurement: Measuring parameters such as flatness, unevenness and surface roughness of the steel sheet to ensure that the quality and surface condition of the steel sheet meet the requirements.
3. Thickness Measurement: Use a thickness gauge to accurately measure the thickness of the steel sheet and ensure it meets the design requirements.
4. Material measurement: Use material analysis instruments to measure the chemical composition and mechanical properties of the steel sheet to ensure that the quality and performance of the steel sheet meet the requirements.
5. Bending and deformation measurements: During the shipbuilding process, steel sheets may be subject to bending and deformation. The degree of bending and deformation of a steel sheet is measured and monitored using tools such as bending and displacement gauges to ensure that it is within acceptable limits.
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