CCS Shipbuilding Steel Plate

CCS Shipbuilding Steel Plate

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CCS shipbuilding steel refers to ship steel materials that meet the standards of the China Classification Society. CCS is one of the internationally recognized classification societies, providing classification and certification services for ships and offshore engineering equipment.

 

As a professional CCS shipbuilding steel plate supplier, GNEE STEEL provides fully CCS-certified ship plates with stable performance, complete specifications, and reliable quality, widely used in the construction of various ships and offshore engineering equipment, and trusted by customers in more than 50 countries and regions worldwide.

Characteristics of CCS Ship Steel

 

Clear and Strict Low-Temperature Toughness Requirements

 

• Grade D/E: Impact energy ≥ 34J at -20℃ ~ -40℃
• F/H High-Strength Steel: Retains high toughness even at -60℃ (e.g. EH47 / FH40)
• Emphasis on CTOD (Crack Tip Opening Displacement) for improved crack resistance in weld heat-affected zones

 

CCS steel plates deliver stable low-temperature toughness, excellent impact resistance and effective resistance to crack propagation.

 

CCS MTC

Classification of CCS Ship Steel

• CCS shipbuilding steel can be classified into multiple grades based on its usage and performance.
• Normal Strength Hull Structural Steel (such as grades A, B, D, E)
• High Strength Hull Structural Steel (such as grades AH32, DH32, EH32, AH36, DH36, EH36)
• Extra High Strength Hull Structural Steel (such as grades AH40, DH40, EH40)

Applications of CCS Ship Steel

• Bulk carriers, container ships, oil tankers, chemical tankers
• Offshore engineering, offshore platforms, port machinery
• Inland vessels, coastal ships, ocean-going vessels, polar low-temperature ships
• Export ships, vessels for third-country shipowners, Chinese-flagged ships

In summary, CCS ship steel is a key material for ensuring the safety and reliability of ships and offshore engineering equipment.

 

 

CCS Steel Plate Grade
General Strength	CCS/A	CCS/B	CCS/D	CCS/E
High Strength	CCS/A32	CCS/D32	CCS/E32	CCS/F32
	CCS/A36	CCS/D36	CCS/E36	CCS/F36
	CCS/A40	CCS/D40	CCS/E40	CCS/F40
Extra Strength	CCS/A420	CCS/D420	CCS/E420	CCS/F420
	CCS/A460	CCS/D460	CCS/E460	CCS/F460
	CCS/A500	CCS/D500	CCS/E500	CCS/F500
	CCS/A550	CCS/D550	CCS/E550	CCS/F550
	CCS/A620	CCS/D620	CCS/E620	CCS/F620
	CCS/A690	CCS/D690	CCS/E690	CCS/F690

 

 

rade	yield point (MPa)	Tensile strength σb(MPa)	Elongation σ%	C	Mn	SI	S	P
A32	315	440-570	22	<=0.18	>=0.9-1.60	<=0.50	<=0.035	<=0.035
D32
E32
F32				<=0.16			<=0.025	<=0.025
A36	355	490-630	21	<=0.18			<=0.035	<=0.035
D36
E36
F36				<=0.16			<=0.025	<=0.025
A40	390	510-660	20	<=0.18			<=0.035	<=0.035
D40
E40
F40				<=0.16			<=0.025	<=0.025

 

 

C max	Si max	Mn	P max	S max	N max.
0.18	0.55	1.60	0.020	0.020	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
690	770-940	14

CCS Grade EQ70 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.20	0.55	1.70	0.025	0.025	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
690	770-940	14

CCS Grade DQ70 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.21	0.55	1.70	0.035	0.035	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
690	770-940	14--16

CCS Grade AQ70 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.21	0.55	1.70	0.030	0.030	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
690	770-940	14

CCS Grade EQ63 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.20	0.55	1.70	0.025	0.025	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
620	720-890	15

CCS Grade FQ63 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.18	0.55	1.60	0.020	0.020	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
620	720-890	15

CCS Grade AQ63 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.21	0.55	1.70	0.030	0.030	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
620	720-890	15

CCS Grade EQ56 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.20	0.55	1.70	0.025	0.025	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
550	670-830	16

CCS Grade FQ56 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.18	0.55	1.60	0.020	0.020	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
550	670-830	16

CCS Grade AQ56 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.21	0.55	1.60	0.030	0.030	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
550	670-830	16

CCS Grade EQ51 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.20	0.55	1.70	0.025	0.025	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
500	610-770	16

CCS Grade FQ51 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.18	0.55	1.60	0.020	0.020	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
500	610-770	16

CCS Grade AQ51 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.21	0.55	1.70	0.030	0.030	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
500	610-770	16

CCS Grade EQ47 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.20	0.55	1.70	0.025	0.025	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
460	570-720	17

CCS Grade FQ47 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.18	0.55	1.60	0.020	0.020	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
460	570-720	17

CCS Grade AQ47 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	N max.
0.21	0.55	1.70	0.030	0.030	0.020

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
460	570-720	17

CCS Grade EH40 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	Als	Nb	V	Ti max.	Cu max.	Cr max.	Ni max.	Mo max.	N max.
0.18	0.50	0.90-1.60	0.025	0.025	0.015	0.02-0.05	0.05-0.10	0.02	0.35	0.20	0.40	0.08	-

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
390	510-660	20

CCS Grade FH40 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	Als	Nb	V	Ti max.	Cu max.	Cr max.	Ni max.	Mo max.	N max.
0.16	0.50	0.90-1.60	0.020	0.020	0.015	0.02-0.05	0.05-0.10	0.02	0.35	0.20	0.80	0.08	0.009

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
390	510-660	20

CCS Grade AH40 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	Als	Nb	V	Ti max.	Cu max.	Cr max.	Ni max.	Mo max.	N max.
0.18	0.50	0.90-1.60	0.030	0.030	0.015	0.02-0.05	0.05-0.10	0.02	0.35	0.20	0.40	0.08	-

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
390	510-660	20

CCS Grade EH36 Shipbuilding Steel Plate

C max	Si max	Mn	P max	S max	Als	Nb	V	Ti max.	Cu max.	Cr max.	Ni max.	Mo max.	N max.
0.18	0.50	0.90-1.60	0.025	0.025	0.015	0.02-0.05	0.05-0.10	0.02	0.35	0.20	0.40	0.08	-

Yield Strength (MPa) min.	Tensile Strength (MPa)	Elongation min. %
355	490-630	21

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If you are interested in other shipbulinding steel plates, please click - ASTM A131, ABS Ship Class, CCS Ship Class, LR Ship Class, DNV Ship Class, BV Ship Class, GL Ship Class, RINA Ship Class, KR Ship Class, NK Ship Class, EN10225, API Spec 2H.

 

 

CCS Shipbuilding Steel Plate has corresponding equivalent grades in international ship classification society standards, which is convenient for customers in different regions to select and use. As a professional CCS shipbuilding steel plate supplier, GNEE STEEL can provide products that meet various international standards. The equivalent grades of common CCS grades are as follows:​

​

Our Grade (CCS)​

Type​

ABS (USA)​

DNV (Norway)​

BV (France)​

LR (UK)​

NK (Japan)​

KR (South Korea)​

CCS A​	Normal Strength​	ABS A​	DNV A​	BV A​	LR A​	NK A​	KR A​
CCS B​	Normal Strength​	ABS B​	DNV B​	BV B​	LR B​	NK B​	KR B​
CCS AH32​	High Strength​	ABS AH32​	DNV AH32​	BV AH32​	LR AH32​	NK AH32​	KR AH32​
CCS FH36​	High Strength​	ABS FH36​	DNV FH36​	BV FH36​	LR FH36​	NK FH36​	KR FH36​
CCS EH40​	Extra High Strength​	ABS EH40​	DNV EH40​	BV EH40​	LR EH40​	NK EH40​	KR EH40​

​

Note: Equivalent grades from different classification societies have similar mechanical properties and application scenarios, as they all comply with IACS unified requirements, but there may be slight differences in chemical composition and impact test details.

 

For example, CCS AH32 is equivalent to ABS AH32 and DNV AH32, but CCS has stricter control over micro-alloying elements to ensure weldability for thick plates.

 

Customers can consult GNEE STEEL's technical team for detailed matching suggestions based on specific project standards and regional classification society requirements.

 

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What is the steel equivalent of AH36?

The CCS AH36 equivalent steel in GB standard is Q345B. It can be proved from below comparision between chemical composition and mechanical property of CCS AH36 steel and Q345B steel.

 

What is the difference between EH36 and AH36?

EH36 includes mandatory micro-alloying elements (niobium, vanadium, titanium) for enhanced grain refinement and toughness. AH36 allows flexibility in micro-alloying, making it more cost-effective for standard applications

 

What is the meaning of the CCS grade designation?​

"CCS" stands for China Classification Society; "A/B/D/E" indicates the quality grade (differentiated by impact temperature); "H" represents high-strength; the number (32/36/40) indicates the minimum yield strength (e.g., AH32 means high-strength grade with 315 MPa yield strength, impact temperature -20℃). "F" in FH36 indicates ultra-low temperature toughness (impact temperature -60℃).​

 

What are the maximum thickness and width of CCS shipbuilding steel plate provided by GNEE STEEL? 

The standard thickness range is 3-300mm, width 1200-4200mm, length 3000-18000mm. We support customized specifications, including special thickness (up to 350mm), width (up to 4800mm), and length. We also support small-order customization (minimum order quantity 1 ton) and urgent orders to meet your project schedule.​

 

Do CCS shipbuilding steel plates require special welding processes? 

They have excellent weldability; ordinary arc welding or MIG welding can be used. For thick plates (>50mm), low preheating (100-150℃) is recommended to avoid welding cracks. We provide free professional welding guidance, including welding material selection, preheating temperature, and post-welding heat treatment parameters, referring to CCS "Materials and Welding Code" and GB/T 712 standards.​

 

Can GNEE STEEL provide CCS certification and quality certificates for the plates?​

Yes. All our CCS shipbuilding steel plates have CCS certification, and we can provide EN 10204 3.1/3.2 mill test certificates, including chemical composition, mechanical properties, impact test, and ultrasonic flaw detection reports. We also provide third-party testing services (SGS, BV) if required, ensuring compliance with international project requirements.​

 

What is the lead time for CCS shipbuilding steel plates? 

For stock specifications, delivery can be made within 3-7 days; for customized specifications, the lead time is 15-30 days. We cooperate with well-known logistics companies (Maersk, COSCO) to deliver to more than 50 countries and regions, with flexible transportation methods (sea, air, land) available. We are familiar with the import policies and customs clearance processes of various countries, especially Asian, European, and American markets.​

 

What is the difference between CCS normal strength and high-strength shipbuilding steel? 

Normal strength grades (A/B/D/E) have yield strength 235-275 MPa, suitable for low-load, normal-temperature marine scenarios; high-strength grades (AH32-FH36) have yield strength 315-355 MPa, better low-temperature toughness, suitable for large ships and harsh marine environments. Choose based on ship type, navigation area, and structural load: small ships in tropical seas can choose CCS A/B; large ships and offshore platforms choose AH32/FH36.​

 

 

 

As a leading CCS shipbuilding steel plate supplier with years of experience in marine steel export, GNEE STEEL has won the trust of global shipyards and offshore engineering companies with professional strength and high-quality service. Choosing us means choosing reliability, efficiency, and cost savings:​

 

Strict CCS Certification & Quality Control: We have advanced production and testing equipment, strictly implementing CCS standards and IACS unified requirements. Each batch of plates undergoes chemical composition analysis, mechanical property testing, ultrasonic flaw detection (EN 10160), and impact testing to ensure stable performance and qualified quality. We also pass ISO 9001 quality system certification, ensuring full quality traceability.​

 

Complete Product Specifications & Customization: We stock a full range of CCS shipbuilding steel grades (normal strength, high strength, extra high strength), with complete thickness and width specifications. Our technical team can provide customized solutions (heat treatment, impact temperature, Z-direction performance, surface treatment) according to your project needs, meeting the diverse needs of different ship types and offshore projects.​

 

Professional Technical Support: Our team of senior engineers with years of experience in marine steel provides one-stop technical services, including product selection, welding guidance, CCS certification consultation, and after-sales problem solving. We help you avoid technical risks and improve project efficiency and safety.​

 

Competitive Price & Fast Delivery: As a direct manufacturer, we eliminate intermediate links, providing customers with competitive factory prices. We cooperate with well-known logistics companies to ensure fast and safe delivery to global destinations, with flexible transportation methods to meet your project schedule. For urgent orders, we can shorten the lead time to 10-15 days.​

 

Rich Export Experience: We have rich experience in exporting CCS shipbuilding steel plates to Asia, Europe, Africa, and the Americas, familiar with the import policies, certification requirements, and customs clearance processes of various countries. We can provide professional customs clearance documents (CCS certification, mill test certificate) to ensure smooth delivery of your goods.​

 

Perfect After-Sales Service: We provide 24-hour after-sales service. If there is any quality problem with the products, we will respond quickly and provide solutions (return, replacement, or compensation) to protect your legitimate rights and interests. Our long-term after-sales support ensures the smooth operation of your shipbuilding and offshore projects.

 

 

CCS Shipbuilding Steel Plate is a high-performance, high-reliability marine structural steel that strictly complies with CCS standards and IACS unified requirements, with excellent corrosion resistance, low-temperature toughness, weldability, and load-bearing capacity. It is divided into normal strength, high strength, and extra high strength grades, covering the needs of various shipbuilding and offshore engineering projects, from small civilian ships to large tankers and deep-sea drilling platforms.

 

Compared with other marine steel grades, CCS shipbuilding steel has obvious advantages in certification compliance, cost-effectiveness, and customization capabilities, and is widely recognized by global shipyards and classification societies.

 

GNEE STEEL is committed to providing high-quality CCS shipbuilding steel plates and professional one-stop services, from product selection to after-sales support, to help you reduce costs, improve efficiency, and ensure the safety and reliability of your shipbuilding and offshore projects.

 

Whether you need standard specifications or customized solutions, we can meet your needs with our strength and experience. With CCS shipbuilding steel plate from GNEE STEEL, you can get reliable material support for your marine projects and achieve win-win cooperation.

 

Get Your Customized CCS Shipbuilding Steel Plate Quote Now!

 

Are you looking for high-quality, CCS-certified shipbuilding steel plates for your shipbuilding or offshore project?

Do you need professional technical guidance to choose the right grade and specifications? Contact GNEE STEEL now to get a free quote and detailed product sample!

 

📩 Send us an inquiry with your requirements (grade, thickness, width, length, quantity, and project scenario), and our professional team will reply to you within 2 hours, providing customized solutions and the most competitive price.

✅ CCS-certified products

✅ professional technical support

✅ on-time delivery 

 

GNEE STEEL is your trusted partner for CCS shipbuilding steel plates!

 

 

 

 

 

 

 

Our products have undergone strict quality testing and come with professional certificates. If you have any questions about CCS Shipbuilding Steel Plate, please feel free to inspect.

 

Relying on many first-class equipment, such as CNC Shearing machine, Press Brake machine, Straightening machine, Roll Bending machine, Flat Bar Machine, Deburring machine etc, GNEE STEEL could provide various semi-productsand extensive forming services to customers.

 

GNEE STEEL  PROCESSING

1.CTL & SL SERVICE (141 SETS)

Currently, GNEE STEEL has imported manyadvanced CTL/SL equipment from Italy and Korea and could provide customized CTL/SL services from cold rolled stainless steel and carbon steel to hot rolled stainless steel and carbon steel as well as strips and ultra-wide sheet.

CTL FACILITIES
Max Length:16500mm

Max Width:2200mm

Max Thickness:25.4mm

Max Yield Strength:1500Mpa
SL FACILITIES

Max Width:2200mm

Max Thickness:18mm

Max slit Quantity:31

Max Yield Strength:1200Mpa

 

2.CUTTING SERVICE

GNEE STEEL imported lots of advanced cutting machines from Germany, Sweden, America and Japan, including plasmas cutting machine, water jet cutting machine, laser cutting machine, flame cutting machine and saw machine. In order to meet customers' diversified needs, GNEE STEEL also adopts nest working multi-cutting methods and intensive production to improve production capacity and save costs for the customers.

Laser Cutting Machine

Max Cutting Length:40,000mm

Max Width:4,600mm
Max Thickness:100mm

 

Flame Cutting Machine

Max Cutting Length:40,000mm

Max Width:8,000mm
Max Thickness:500mm

Plasmas Cutting Machine

Max Cutting Length:30,000mm

Max Width:5,000mm
Max Thickness:100mm

 

Water-jet Cutting

Max Cutting Length:12,000mm

Max Width:4,010mm
Max Thickness:250mm

3.FORMING SERVICE

Steel Plate Roll Bending
Maximum Rolling Thickness: up to 200mm
Maximum Width: 4200mm

   

Automatic Bending Machine-Press Brake
Max Bending Capability:3000Ton
Max Bending Length:15,000mm

Expert in Bending High-Strength & Wear-Resistant Steels

  

  

Punching Machine

Max Width:3,070mm
Max Thickness:8mm

Max Pressure:250t

BEVELING SERVICE

GNEE STEEL beveling platform has edge milling machine, edge planer, flame / plasma groove cutting machine, flame groove cutting robot, desktop chamfering machine, gantry planerand other advanced equipment to provide customers with parts prefabrication services,daily processing of V-type, Y-type, X-type and U-type grooves, and guarantee subsequent processes such as welding and assembly of products.

 

Milling：
Max Cutting Length:18,000mm

Max Width:4500mm
Max Thickness:120mm

 

  

Beveling:
Max Length:16,000mm

Max Thickness:80mm

MACHINING SERVICE

GNEE STEEL owns CNC Portal-type Boring and Milling machine,CNC Floor-type Boring and Milling machine, Vertical Precision 5-axis Milling Machine, Portal-type Planer, Vertical Lathe, Cylindical Grinding machine, Hydraulic Planer and CNC Lathe and could provide fine machining of large spare parts and structural parts for customers.

Gantry Type Boring & Milling Maching Center

Max Length:48000mm

Max Width:12500mm
Max Height:8000mm

Max Diameter:10500mm

Deep-hole Drilling Equipment
Max Driling Depth:1,100mm
Max Bore Diameter:φ80mm
Max Diametar:φ4,500mm

MMulti-hole Drilling Equipment

Max Length:13,000mm
Max Width:10,000mm
Max Bore Diameter:φ105mm
Max Drilling Depth:250mm

Floor Boring And Milling Machine
Max Length:24,000mm
Max Height:8,000mm
Turntable Dimensions:9x5m

Vertical Lathe

Max Height:6,000mm

Max Diametar:φ22,00mm

Automated Edge Milling Machine

The Automated Edge Milling Machine is a leading product in heavy-duty milling equipment. It is primarily used for weld groove preparation (beveling) on large-format plates made of stainless steel, carbon steel, and special steel grades. It can process plates with a maximum thickness of up to 90mm, a length of 16 meters, and a width of 4 meters.

 

It is equipped with dual milling units and a fully automatic milling cutter head changing system, enabling automated 4-edge beveling. Its standout feature is the profiling technology used when milling wavy plates and irregularly shaped products, which ensures absolute consistency of the groove after milling.

 

Utilizing specially designed milling cutter heads, it can execute highly difficult and complex groove profiles in a single pass.

 

Materials: Plain carbon steel, pressure vessel steel, wear-resistant steel, high-strength steel, stainless steel, nickel-based alloys, etc.
Width: 1200 - 4200 mm
Length: 5800 - 16000 mm
Thickness: 5 - 90 mm
Weight: Up to 35 tons

 

This edge milling machine is the world's premier automated bevel milling equipment. With its excellent structural design and advanced data algorithms, it achieves full automation from plate detection to the actual milling process, significantly improving processing efficiency while guaranteeing high precision.

 

• Processing Accuracy

Length accuracy: ±1mm when L < 10m; ±2mm when L > 10m;

Width accuracy: ±1mm;

Diagonal accuracy: ±2mm;

Root face accuracy (blunt edge): ±1mm for Y-grooves; +0.5mm for X-grooves.

• Processing Efficiency

The processing efficiency is more than 10 times that of conventional edge milling or edge planing equipment.

HEAT TREATMENT

Heat Treatment Furnace
Max Furnace Size:36x12x13.5m
Max Rated Temperature:1100℃
Max Loading Capacity:800t

Heat Treatment of Pressure Vessels
Heat Treatment of Mining Equipment
Heat Treatment of Tube Sheet
Heat Treatment of Pressure Vessel Head

 

 

GNEE STEEL is currently participating in the procurement phase of a 100,000m³ full containment ammonia storage tank project, supplying high-quality steel plates for critical tank components. Due to the corrosive nature of ammonia and the risk of Ammonia Stress Corrosion Cracking (SCC), the project requires strict metallurgical control of materials according to EN 10028-3 standards.

 

One of the most important technical requirements of this project is the strict limitation of the actual Yield Strength (Re) for all NL2 grade materials. To prevent SCC risks in ammonia storage environments, the actual yield strength must not exceed 390 MPa, regardless of the nominal values specified in the standard or plate thickness ranges. This requirement places higher demands on steelmaking process control, heat treatment stability, and material testing.

 

Raw high-strength steel plates ready for the 100,000 m³ full containment ammonia storage tank production

 

Project Materials and Technical Requirements

 

The project mainly uses P355NL2 and P275NL2 normalized pressure vessel steel plates, which are widely applied in low-temperature storage tanks due to their excellent toughness and weldability.

 

Key technical specifications include:

• Material grades: P355NL2 and P275NL2 (Normalized)
• Yield strength: Standard minimum / Maximum limited to 390 MPa
• Hardness: ≤ 225 HBW in base material
• Impact testing: Charpy-V notch test at -50°C, minimum 27J
• Certification: EN 10204 3.1 certificate, with optional 3.2 certification

 

These strict requirements ensure that the steel plates maintain stable mechanical properties and high resistance to ammonia-induced stress corrosion during long-term operation.

 

Precision rolling and forming of steel plates into curved sections for the 100,000 m³ ammonia storage tank.

 

Project Plate Quantities and Thickness Distribution

 

The total steel demand for this ammonia storage tank project is several thousand tons, mainly distributed across different tank sections:

 

P355NL2 – Inner & Outer Tank Shell Plates

• Lower shell courses: 50 mm thickness – approx. 2,000 tons
• Middle shell courses: 25 mm thickness – approx. 1,400 tons
• Upper shell courses: 10 mm thickness – approx. 500 tons

 

P275NL2 – Tank Bottom Plates

• Thickness: 10–15 mm – approx. 750 tons

 

P275NL2 – Suspended Roof Structure

• Thickness: 5–8 mm – approx. 180 tons

 

S275JR – Outer Roof (Ambient Structure)

• Thickness: 10 mm – approx. 450 tons

 

To improve tank fabrication efficiency and reduce circumferential welds, the project also requires wide steel plates to minimize welding joints, which helps reduce the potential risk of SCC in ammonia service conditions.

 

Formed steel segments wrapped and racked for protection, ready for 100,000 m³ ammonia storage tank assembly.

 

GNEE STEEL provides high-precision steel plate rolling and cylinder fabrication solutions for tank manufacturers worldwide. Send us your plate specifications or fabrication drawings for a fast quotation.

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TYPE	GRADE	SPECIFICATIONS
Carbon Steel / Low Alloy Coil	Q235A/B/C/D/Q355B(Q345B)/C/D/E/SS400/SAPH400-C/ASTMA283Grade C	0.7~2.0*1250/1500mm*C 2.3~19.5*1250/1500/1800/2000mm*C
Medium Heavy Plate	Q235B/Q355B(Q345B)/C/D/E	6.0-200x150mm-4000mmxL
Vessel Plate	Q245R/Q345R/HP295/SA516MGR485/SA516GR70/P355NL2/P275NL2/ S275JR//SPV490/ASTM A537 Class 1/Class 2	2.5-120x1500mm-3000mmxL
High Strength Steel	510L/610L/700L/750L/BS600MCK4/BS700MCK2/BS700MCK4/ BS960E/BWELDY700QL2/L4/BWELDY960QL4/HG60D/70D/785D/ Q460D/Q550D/690D/690E/TQ600MCD/TQ700MCD/S700MCD/ WYS600/700/STRENX700MCE/Q490E/Q490D	1.2-60x 1500mm-2500mmxL
Patterned Steel	HQ235A|B	1.2-60x 1500mm-2500mmxL
Wear-resistance Steel	NM360/400/450/500/NM300TP/400TP/450TP/ ABREX400/450/500/B-HARD450XKY/ CREUSABRO4800/8000/EH C400LE/450LE/500LE/ HADOX450/500	3.0-50x1250mm-3300mmxL
Cold Rolled Coil	DC01/RECC/REDT/SPCC/ST12	0.5-3.0x1250mm-1500mmxC
Galvanized Plate	DC51D+AZ/DC51D+Z/DX51D+Z/SGH340+Z275/Z275/Z120/S350GD+ZM275	0.45-3.0x1250mm-1500mmxC
Pickled Coil	DD11/SPHC	2.0-6.0x1500xC

Stainless Steel Material and Surface Specifications

TYPE	GRADE	THICKNESS	SURFACE
Austenitic	304/304H/304L/304J1	0.25-150mm	2B/BA/NO.4/8K/SB/HL/NO.1
Austenitic	321	0.4-80mm	2B/BA/NO.4/8K/SB/HL/NO.1
Austenitic	316/316L/317L/316Ti	0.3-80mm	2B/BA/NO.4/8K/SB/HL/NO.1
Austenitic	201(J1/J2/J5)	0.35-12mm	2B/NO.1/1D
Ferrite	430	0.4-3.0mm	2B/BA/NO.4/8K/SB/HL
Ultra Pure Ferrite	443	0.4-2.0mm	2B
Ultra Pure Ferrite	436L/439/444/441	0.5-3.0mm	2B/2D

Special Steel / Nickel Base Alloy

TYPE	GRADE	GRADE (ASTM)	GRADE (EN)	THICKNESS
Heat-resistant Steel	309S	S30908	1.4833	0.5-40mm
Heat-resistant Steel	310S	S31008	1.4845	0.5-40mm
Duplex Stainless Steel	2101	S32101	1.4162	1.5-50mm
Duplex Stainless Steel	2304	S32304	1.4362	3.0-50mm
Duplex Stainless Steel	2205	S32205/S31803	1.4462	0.5-60mm
Duplex Stainless Steel	2507	S32750	1.4410	1.0-60mm
Super Austenitic-Steel	904L	N08904	1.4539	0.6-50mm
Super Austenitic-Steel	254SMO	S31254	1.4547	0.5-50mm
Super Austenitic-Steel	1.4529	N08926	1.4529	0.5-50mm
Super Austenitic-Steel	AL-6XN	N08367	1.4478	0.5-50mm
Nickel Base Alloy	Alloy 31	N08031	1.4562	1.0-50mm
Nickel Base Alloy	800	N08800	1.4876	0.8-50mm
Nickel Base Alloy	800H	N08810	1.4958	0.8-50mm
Nickel Base Alloy	800HT	N08811	1.4959	0.8-50mm
Nickel Base Alloy	Alloy 28	N08028	1.4563	1.0-20mm
Nickel Base Alloy	Alloy 20	N08020	2.4660	1.0-20mm
Nickel Base Alloy	825	N08825	2.4858	0.8-40mm
Nickel Base Alloy	C276	N10276	2.4819	0.5-50mm
Nickel Base Alloy	C22	N06022	2.4602	1.0-50mm
Nickel Base Alloy	625	N06625	2.4856	0.8-20mm
Nickel Base Alloy	400	N04400	2.4360	1.0-20mm
Nickel Base Alloy	600	N06600	2.4816	1.0-50mm
Nickel Base Alloy	Pure Ni 201	N02201	2.4061	0.5-20mm
Titanium	TA1	Gr.1	Class 1	0.5-50mm
Titanium	TA2	Gr.2	Class 2	0.5-50mm

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