GNEE is a professional manufacturer and global exporter of GB713 Q370R pressure vessel plates, engineered for high-pressure, high-strength applications in pressure vessels, boilers, and chemical storage tanks. Our plates are widely used by B2B exporters, wholesalers, and procurement companies in Ecuador, Peru, Venezuela, UAE, Saudi Arabia, Bahrain, Oman, Qatar, Nigeria, Ghana, Kazakhstan, Russia, Singapore, Vietnam, Thailand, Australia, and Brunei.
GB713 Q370R steel plates deliver excellent mechanical performance, weldability, and toughness, ensuring safe and durable operation under extreme industrial conditions.
Overview of GB713 Q370R Plates
GB713 Q370R is a Chinese national standard pressure vessel steel plate designed for moderate- to high-pressure vessels. Key features include:
- High yield and tensile strength, suitable for pressure vessel fabrication
- Good toughness and impact resistance for safety in high-pressure service
- Excellent weldability for large-scale vessel construction
- Reliable dimensional stability due to controlled manufacturing processes
These properties make GB713 Q370R ideal for boilers, storage tanks, reactors, and industrial vessels.
GNEE producing GB713 Q370R pressure vessel plates in a controlled environment.
International Standards Compliance
GNEE GB713 Q370R plates comply with Chinese national standards (GB713) and are accepted in international projects:
- GB713 Q370R standard
- Optional inspection and certification per EN 10204 3.1 / 3.2
- Compatible with ASME and PED requirements for pressure vessels
This ensures our plates are globally recognized for high-pressure industrial applications, especially in Latin America, Middle East, Africa, and Asia-Pacific regions.
GB713 Q370R steel Chemical composition:
|
Main chemical elements composition of Q370R |
|||||
|
C |
Si |
Mn |
P |
S |
Nb |
|
0.18 |
0.55 |
1.20-1.60 |
0.025 |
0.015 |
0.015-0.050 |
GB713 Q370R steel Mechanical Property:
|
Thickness (mm) |
||||||
|
Q370R |
> 3 ≤ 16 |
> 16 ≤ 36 |
> 36 ≤ 60 |
>60 ≤ 100 |
>100 ≤ 150 |
>150 |
|
Yield strength (≥Mpa) |
370 |
360 |
340 |
340 |
340 |
340 |
|
Tensile strength (Mpa) |
530-630 |
520-620 |
||||
Application Scenarios
GB713 Q370R plates are suitable for:
- Pressure vessels and chemical reactors
- Industrial boilers and heat exchangers
- Storage tanks for petroleum and chemical industries
- Heavy-duty industrial vessels requiring high-strength steel
GNEE's engineering team can provide guidance on plate thickness, welding methods, and fabrication requirements, ensuring optimal material selection for each project.
Manufacturing & Quality Assurance
All GB713 Q370R plates are produced under strict quality control:
- Steelmaking: EAF / LF / VD
- Heat treatment: Normalized or normalized + tempered for improved toughness
- Thickness: 8 mm – 200 mm (customizable)
- Width / Length: up to 2,500 mm width, 12,000 mm length
- Inspection: Ultrasonic, magnetic particle, chemical composition, and dimensional checks
We follow ISO 9001 standards and provide mill test certificates, third-party inspection reports, and full traceability for export orders.
Export & Logistics
GNEE specializes in bulk exports of GB713 Q370R plates:
- Protective packing for long-distance shipping and corrosion prevention
- Complete documentation: inspection reports, mill certificates, customs clearance
- Reliable global logistics to all target markets
Our services guarantee on-time delivery and project-ready quality, supporting wholesalers, procurement companies, and B2B exporters.
Why Choose GNEE GB713 Q370R Plates?
- Experience: Years of manufacturing high-strength pressure vessel plates
- Technical Expertise: Material selection, welding, and fabrication guidance
- Authority: GB713 certified, ISO 9001 compliant, globally export-ready
- Trustworthiness: Fully inspected, certified, and bulk-ready for B2B orders
Conclusion
For GB713 Q370R Pressure Vessel Plates that combine strength, toughness, and weldability, GNEE is your trusted global supplier.
Contact GNEE today for a quotation, technical datasheet, or project consultation, and ensure your pressure vessels, boilers, and tanks use high-performance Q370R steel plates for safe and reliable operation.
FAQ
1. What are the key mechanical properties of Q370R plates?
Answer:
Q370R is a high-strength pressure vessel steel with:
Tensile strength: 530-680 MPa
Yield strength: ≥370 MPa
Elongation: ≥20% (for t≤16mm)
Impact toughness: ≥34J at 0°C (standard)
Thickness range: 5-150mm
2. How does Q370R compare to Q345R in composition and applications?
Answer:
Key differences:
| Parameter | Q370R | Q345R |
|---|---|---|
| Yield Strength | ≥370 MPa | ≥345 MPa |
| Alloy Content | Higher Nb/V microalloying | Basic C-Mn-Nb |
| CEV | ~0.44 | ~0.42 |
| Pressure Rating | 6.4-10MPa | 1.6-6.4MPa |
3. What heat treatment processes are required?
Answer:
Mandatory processing:
Normalizing (N): For all thicknesses
Optional TMCP: For improved toughness
Stress Relief: 580-620°C for thickness >50mm
4. What welding precautions are critical for Q370R?
Answer:
Essential welding practices:
Preheat: 120-180°C (for t>20mm)
Consumables: GB/T 5117 E5515-G or equivalent
Heat Input: 1.5-2.5 kJ/mm
Interpass Temp: ≤250°C
PWHT: Mandatory for thickness >32mm
5. Where is Q370R typically used?
Answer:
Primary applications:
High-pressure reactors (6.4-10MPa)
Power plant boiler drums
Thick-walled heat exchangers
Petrochemical vessels
Nuclear auxiliary equipment
Hot Tags: gb713 q370r for pressure vessel plate, China gb713 q370r for pressure vessel plate manufacturers, suppliers, factory, C15 Carbon Steel Round Bar, Hot Rolled Boiler Pressure Vessel Plate, Pressure Vessel Steel
