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Help CenterSteel Sheet & Plate & Shipbuilding Steel Plate，CCSA、CCSB、CCSD、CCSE（A/B/D/E）
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Specification for Shipbuilding Steel Plate
1. Product Overview
Shipbuilding steel plate refers to hot-rolled structural steel plate for ship and offshore engineering, manufactured in accordance with specifications of global classification societies, Chinese Standard GB712-2011 and ASTM A131. It is widely applied to hull outer shell, deck, bulkhead, keel, bottom plating, side shell plating, offshore platforms, barges and port machinery under marine service. Featuring outstanding low-temperature toughness, seawater corrosion resistance, superior weldability and fatigue resistance, the product fits coastal, ocean-going and frigid polar marine environments.
Shipment: Goods delivered from Tianjin Port within 5~7 working days; Payment term: 30% T/T advance payment + 70% balance payment before dispatch.
2. Product Classification, Grades & Mechanical Properties
Ship plates fall into normal-strength and high-strength categories based on yield strength.Grade code explanation: A/B/D/E/F indicates Charpy impact test temperature: A (ambient temperature), B (+20℃), D (-20℃), E (-40℃), F (-60℃); H stands for High Strength, the number represents yield strength grade (32=315MPa, 36=355MPa, 40=390MPa).
2.1 Normal Strength Ship Plate (Min YS≥235MPa, TS:400~520MPa)
Grades: CCSA, CCSB, CCSD, CCSE (A/B/D/E)
| Grade | Impact Temperature | Application |
|---|---|---|
| CCSA | Ambient Temp | Inland barges, inner bulkheads & ordinary inner decks |
| CCSB | +20℃ | Small coastal vessels & non-critical hull structures |
| CCSD | -20℃ | Offshore bulk carriers and secondary hull plating of oil tankers |
| CCSE | -40℃ | Cold-region coastal ships and critical outer hull structural parts |
2.2 High Strength Ship Plate (Main grades: 32/36/40 series)
| Grade | Min Yield Strength | Tensile Strength | Impact Temp | Typical Application |
|---|---|---|---|---|
| AH32/DH32/EH32/FH32 | 315MPa | 440~570MPa | 0/-20/-40/-60℃ | Medium & small container ships, deck longitudinal members |
| AH36/DH36/EH36/FH36 | 355MPa | 490~620MPa | 0/-20/-40/-60℃ | Ocean-going bulk carriers, container vessel hull shell (most widely used grade) |
| AH40/DH40/EH40/FH40 | 390MPa | 510~660MPa | 0/-20/-40/-60℃ | Large oil tankers, offshore platforms and heavy-load critical hull components |
3. Chemical Composition (wt%, standard certified composition)
| Grade Group | C Max | Mn | S Max | P Max |
|---|---|---|---|---|
| Normal Grade A/B/D/E | 0.21 | 0.80~1.60 | 0.035 | 0.035 |
| High Strength AH36/DH36/EH36 | 0.18 | 1.20~1.65 | 0.030 | 0.030 |
For polar-grade F-type plate: S≤0.025%, P≤0.025%; strict impurity control to improve low-temperature toughness.
4. Dimension Specification (In Stock & Custom Production)
Thickness: 6mm~150mm; regular spot size:6/8/10/12/14/16/20/25/30/40/50mm; heavy plate 50~150mm available per rolling order.
Width:1500mm~3500mm, common widths:1800/2000/2200/2500mm
Length:6000mm~13000mm, custom cut-to-length, plasma/flame cutting for special shapes available.
Delivery Condition: Hot Rolled(HR), Normalized(N), TMCP (Thermo-Mechanical Controlled Process for high-strength grades). Z-direction steel Z15/Z25/Z35 for anti-lamination performance is available for heavy plate orders.
5. Applicable Standards & Classification Society Approval
Domestic Standard: GB 712-2011 Structural Steel for Ship and Offshore Engineering Construction
International Standard: ASTM A131(America), EN10025(Europe)
Certified by nine mainstream classification societies: CCS(China), ABS(USA), BV(France), DNV(Norway), LR(UK), NK(Japan), KR(Korea), RINA(Italy), GL(Germany). Each batch comes with original Mill Test Certificate(MTC), heat number and UT ultrasonic inspection report, 100% factory ultrasonic testing to eliminate lamination and inclusion defects.
6. Core Product Advantages
Excellent low-temperature toughness: E-grade passes impact test at -40℃ and F-grade at -60℃, preventing brittle fracture for vessels navigating in cold sea areas.
Excellent weldability: Low-carbon & low-sulfur design fits SMAW, SAW, GMAW, no cracking during shipyard field welding.
Good seawater corrosion resistance: Refined molten steel with limited harmful elements, compatible with IMO PSPC coating standard for ballast tank anti-corrosion to extend hull service life.
High deformation & fatigue resistance: Resist structural deformation and cracking under alternating wave load during long-distance ocean navigation.
7. Application Scope
Shipbuilding: Full hull shell, deck, bulkhead and keel of bulk carriers, container ships, oil tankers, chemical tankers, fishing boats and inland barges.
Offshore Engineering: Offshore drilling platforms, jacket structures, floating cranes, barges, floating docks and offshore wind installation platforms.
Ship Repair: Hull renewal plating, damaged hull patching and ship modification reinforcement.
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Heavy Steel Structure: Port machinery, large pressure vessel base and load-bearing structural plates for engineering equipment.
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