As a professional ASTM A285 PVQ Steel Plate manufacturer and supplier, GNEE Steel provides high-standard pressure vessel quality (PVQ) carbon steel plates that fully comply with ASTM A285/A285M-12 and ASME SA285 standards.
Our ASTM A285 PVQ Steel Plate is designed for low to intermediate tensile strength applications, featuring excellent weldability, formability, and pressure resistance, making it the preferred material for pressure vessels, boilers, storage tanks, and industrial equipment worldwide, especially in the Middle East and African markets.
What is ASTM A285 PVQ Steel Plate?
ASTM A285 is a standard specification for carbon steel plates intended for pressure vessel service at relatively low and intermediate strength levels. It is particularly suitable for applications where high strength is not critical, but good weldability and ease of fabrication are essential.
Available Grades:
- ASTM A285 Grade A
- ASTM A285 Grade B
- ASTM A285 Grade C
Among them, Grade C is the most commonly used due to its higher strength.
Key Features of ASTM A285 PVQ Steel Plate
Strict Quality Compliance: Fully conforms to ASTM A285/A285M and ASME standards, with each batch of products accompanied by mill test reports (MTR) to ensure traceability and compliance. All products pass ISO 9001 certification, SGS third-party testing, and meet international pressure vessel quality requirements.
Excellent Mechanical Properties: As a low to intermediate tensile strength carbon steel, it offers a perfect balance of strength and ductility. The three grades (GrA, GrB, GrC) have gradually enhanced strength, with GrC being the highest grade, ensuring stable performance in medium and low pressure environments.
Superior Weldability & Processability: Easy to perform fusion welding, cold bending, and other processing operations without cracking or deformation, reducing fabrication difficulty and improving production efficiency for customers. It can be supplied in as-rolled, normalized, or stress-relieved conditions according to requirements.
High Temperature & Corrosion Resistance: Can withstand a maximum operating temperature of 538°C (1000°F), with good corrosion resistance to adapt to harsh working environments such as petrochemical and marine fields. Optional surface coating treatment is available to further enhance corrosion resistance.
Cost-Effective & Large Inventory: Made of high-quality carbon steel raw materials, it achieves excellent performance at a reasonable cost, reducing project budget. GNEE maintains a large inventory (5000+ tons) to ensure quick delivery, meeting urgent order needs of customers worldwide.
ASTM A285 Grade Classification
ASTM A285 covers three grades based on tensile strength:
| Grade | Tensile Strength (ksi) | Typical Application Level |
|---|---|---|
| Grade A | 45–65 ksi | Low pressure service |
| Grade B | 50–70 ksi | Moderate pressure |
| Grade C | 55–75 ksi | Higher strength requirement |
Among them, ASTM A285 Grade C is the most commonly used due to its higher tensile strength while maintaining excellent weldability.
A285 Series Vessel Plate Chemical Composition
| ASTM A285 Chemical Composition | |||||
|---|---|---|---|---|---|
| Steel Grade | The Element Max (%) | ||||
| C | Si | Mn | P | S | |
| A285 grade A | 0.17 | 0.08-0.45 | 0.98 | 0.035 | 0.035 |
| A285 grade B | 0.22 | 0.08-0.45 | 0.98 | 0.035 | 0.035 |
| A285 grade C | 0.28 | 0.08-0.45 | 0.98 | 0.035 | 0.035 |
A285 Series Boiler Plate Mechanical Property
| Steel Grade | ASTM A285 Mechanical Property | |||
|---|---|---|---|---|
| Thickness | Yield | Tensile | Elongation | |
| A285 grade A | mm | Min Mpa | Mpa | Min % |
| 6-50 | 165 | 310-450 | 30% | |
| 50-200 | 165 | 310-450 | 27% | |
| A285 grade B | 6-50 | 185 | 345-485 | 28% |
| 50-200 | 185 | 345-485 | 25% | |
| A285 grade C | 6-50 | 205 | 380-515 | 27% |
| 50-200 | 205 | 380-515 | 23% | |
A285 Boiler Steel Plate Dimensions
|
Length |
Thickness |
Width |
| 6000 |
6 |
2500 |
|
5 |
2000 | |
|
8 |
||
|
8 |
2500 |
|
|
4 |
2000 | |
|
6 |
||
|
15 |
||
|
3400 |
60 |
1800 |
| 6000 |
32 |
2000 |
|
20 |
||
|
10 |
||
|
16 |
||
|
25 |
||
|
12 |
||
|
40 |
||
|
50 |
Application Fields of ASTM A285 PVQ Steel Plate
ASTM A285 PVQ steel plate is widely used in industries that require safe and reliable pressure-bearing components, solving the pain points of poor pressure resistance, unstable performance, and non-compliance with international standards faced by customers in pressure vessel manufacturing. Its main application fields include:
- Petrochemical Industry: Manufacturing of oil storage tanks, heat exchangers, reactors, separators, and liquefied gas tanks.
- Power Industry: Boiler drums, power station pressure vessels, nuclear reactor pressure shells, and hydropower station high-pressure water pipes.
- Boiler Manufacturing: Fixed boilers, hull boilers, water walls, and superheater components.
- Marine Industry: Shipboard pressure vessels, hull structures, and marine equipment components.
- Other Fields: Chemical reactors, gas cylinders, bridge components, and non-load-bearing parts of construction machinery.
ASTM A285 vs Other Pressure Vessel Steels
| Grade | Key Feature | Application |
|---|---|---|
| ASTM A285 | Low strength, good weldability | Low-pressure vessels |
| ASTM A516 | Higher strength, better toughness | Medium-pressure vessels |
| ASTM A36 | Structural steel | General construction |
ASTM A285 is the best choice when cost efficiency and fabrication ease are prioritized over high strength.
International Equivalent Grades of ASTM A285 Steel
| Standard | Equivalent Grade | Description |
|---|---|---|
| EN (Europe) | P235GH / P265GH | Pressure vessel steel with similar strength |
| DIN (Germany) | St37 / St44 | Carbon steel for structural and vessel use |
| JIS (Japan) | SS400 / SB410 | General structural and boiler steel |
| GB (China) | Q235B / Q245R | Widely used carbon steel grades |
Notes:
Exact equivalence depends on mechanical properties and application conditions
ASTM A285 is typically used where high toughness at low temperature is not required
GNEE ASTM A285 PVQ Steel Plate Competitive Advantages
1. Strict Quality Control
GNEE has a professional quality inspection team and advanced testing equipment (including tensile testing, impact testing, chemical composition analysis, etc.), implementing full-process quality monitoring from raw material incoming inspection to finished product delivery. All products are accompanied by mill test reports (MTR) to ensure compliance with ASTM and ASME standards, establishing authority and trust in the global market.
2. Customized Solutions for Global Customers
We understand that different regions and industries have unique requirements for pressure vessel steel. GNEE provides one-stop customized services, including customized specifications (thickness, width, length), surface treatment, and heat treatment, to meet the specific needs of customers in Southeast Asia, Middle East, Europe, Africa, and other regions. Our technical team can also provide professional technical guidance for product selection and application.
3. Cost-Effective & Efficient Delivery
As a direct manufacturer, GNEE eliminates intermediate links, providing customers with high-quality products at competitive prices. We have a large inventory of ASTM A285 PVQ steel plate (Grades A, B, C) to ensure fast delivery-general orders can be delivered within 7-15 days, and urgent orders can be prioritized to meet customer project schedules.
4. Professional After-Sales Service
GNEE provides 24/7 after-sales support. If you encounter any problems during product use (such as welding guidance, performance issues), our technical team will respond within 24 hours and provide practical solutions. We also provide quality guarantee for all products, ensuring that customers can use them with confidence.
fAQ
What grade of steel is A285?
ASTM A285 is a specification for low and intermediate tensile strength carbon steel plates of pressure vessel quality for welded pressure vessel applications. The specification covers three grades, A, B, and C, which have different strength levels.
What is the difference between ASTM A285 and A36?
The Astm A285 Grade C shows stability at elevated temperatures. What is Astm A285 Grade C Hardness? A285 Grade C has low to medium tensile strength between 380 to 515 MPa, whereas the tensile strength of A36 material ranges between 400 to 500 Mpa.
What is the equivalent material of ASTM A285?
ASTM A285 Grade C Plate has an equivalent material of ASTM A516 Gr 70, EN 10028-3 P275NH and JIS G3115 SPV235.
What is ASME SA285 GR C material?
Sa 285 Gr C is a low carbon steel grade. A Sa 285 Grade C Plate is designed with an excellent composition of chromium, nickel, and molybdenum, giving the versatile Astm A285 C grade superior corrosion and oxidation resistance properties. The grade also exhibits good resistance against pitting and crevice corrosion.
What is SA 285 Grade C equivalent to?
What is the equivalent of ASME SA 285 Gr C? ASME SA 285 Gr C equivalents include ASTM A285 Grade C, EN P235GH, DIN HI, JIS SPV235, BS 161-360A, GB Q245R, with yield ~205-235 MPa for low-pressure vessels.
What is A285 grade C?
ASTM A285 is a specification for low and intermediate tensile strength carbon steel plates of pressure vessel quality for welded pressure vessel applications. The specification covers three grades, A, B, and C, which have different strength levels. ASTM A285 Grade C has a tensile strength range of 55-75 ksi.
What is the difference between A285 GR C and A516 GR 70?
A516 Grade 70 vs. A285 Grade C (Lower-Strength Carbon Steel): A285 Grade C has lower strength and is typically used for less demanding pressure vessels. A516 Grade 70 is preferred for higher-pressure and more critical applications.
What grade of steel is A285?
ASTM A285 is a specification for low and intermediate tensile strength carbon steel plates of pressure vessel quality for welded pressure vessel applications. The specification covers three grades, A, B, and C, which have different strength levels.
What is the equivalent of ASTM A285 Grade A?
Equivalent Materials for ASTM A285 Grade A
Key matches include EN 10028-2 P235GH (EU), DIN 17155 HI (Germany), JIS G3115 SPV235 (Japan), BS 1501 161-360A (UK), GB 713 Q245R (China), KS D 3560 SPV235 (Korea), AFNOR A37CP (France), IS 2041 R220 (India), AS 1548-430R (Australia).
What is ASTM A285 steel used for?
It is used for low-pressure vessels, tanks, and boilers.
What does PVQ mean?
Pressure Vessel Quality, indicating suitability for vessel applications.
Which grade is most commonly used?
Grade C due to its higher strength.
Is ASTM A285 suitable for high pressure?
No, it is mainly used for low to moderate pressure applications.
Can ASTM A285 be welded easily?
Yes, it has excellent weldability.
What is the difference between A285 and A516?
A516 has higher strength and better toughness, suitable for more demanding conditions.
What industries use ASTM A285?
Oil & gas, petrochemical, storage tank manufacturing, and construction.
What is the equivalent EN grade?
P235GH or P265GH depending on requirements.
What thickness range is available?
Typically 6mm to 200mm.
Can GNEE provide customized plates?
Yes, full customization and processing services are available.
Custom Steel Plate Rolling & Cylinder Fabrication | Cost-Effective Solutions From China
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
Case : Steel Plates Supply for 100,000m³ Full Containment Ammonia Storage Tank Project
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.
| 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/ |
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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We have excellent after-sales service. If you have any questions about ASTM A285 PVQ Steel Plate, you can contact us and we will reply to you within two hours.
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