GNEE is a professional steel manufacturer and global supplier specializing in high-quality pressure vessel plates. Our GB713 Q345R plates are engineered to meet stringent mechanical and chemical property standards for safe, reliable, and long-lasting industrial applications. With over 15 years of experience, GNEE ensures consistent quality and on-time delivery for global clients.
GB713 Q345R Pressure Vessel Plate offers excellent tensile strength, weldability, and corrosion resistance. Designed for use in high-pressure environments, these plates are ideal for boilers, storage tanks, and chemical reactors.
Factory warehouse showing stacked Q345R plates ready for shipment
Technical Specifications
Basic Mechanical Properties (≤50mm thickness)
| Property | Value | Test Standard |
|---|---|---|
| Yield Strength (Re) | 345 MPa (50 ksi) | GB/T 228.1 |
| Tensile Strength (Rm) | 510-640 MPa (74-93 ksi) | GB/T 228.1 |
| Elongation (A) | ≥21% (50mm gauge) | GB/T 228.1 |
| Impact Energy (KV2) | ≥34 J at 0°C | GB/T 229 |
| Brinell Hardness | ≤200 HBW | GB/T 231.1 |
Chemical Composition (Max %, unless specified)
| Element | C | Si | Mn | P | S | Cu | Ni | Cr | Mo | Nb | V | Alt |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Content | 0.15-0.20 | 0.15-0.50 | 1.20-1.60 | ≤0.020 | ≤0.015 | ≤0.30 | ≤0.30 | ≤0.30 | ≤0.15 | ≤0.05 | ≤0.08 | ≥0.02 |
Heat Treatment & Dimensional Range
| Parameter | Options | Standard Range | GNEE Custom Capabilities |
|---|---|---|---|
| Heat Treatment | As-Rolled, Controlled Rolling, Normalized | Normalized for plates >30mm | Custom heat treatment available |
| Thickness | 6mm-150mm | 6mm-150mm | 6mm-450mm (special orders) |
| Width | 1000mm-4200mm | 1500mm-4200mm | 800mm-4800mm |
| Length | 3000mm-18000mm | 5000mm-18000mm | 3000mm-24000mm |
Applications of GB713 Q345R Pressure Vessel Plate
Pressure Vessels and Boilers
GB713 Q345R plates are widely used in the fabrication of pressure vessels, boilers, heat exchangers, and chemical reactors. Their high strength and toughness make them suitable for high-pressure and low-temperature environments.
Industrial Storage Tanks and Pipelines
The excellent weldability and corrosion resistance of Q345R plates allow for safe storage of liquids and gases, making them an ideal material for industrial storage tanks and pipeline construction.
Pressure vessel fabrication workshop showing plates in use
Quality Assurance and Compliance
GNEE GB713 Q345R Pressure Vessel Plates are produced under strict quality control and comply with:
- GB713 standard (China)
- ISO 9001 Quality Management System
- Third-party inspection available upon request
We guarantee uniform thickness, flatness, and chemical composition to ensure performance in critical applications.
Q345R vs. International Equivalents: Making the Right Choice
| Comparison | Q345R (GB713) | A516 Grade 70 (ASTM) | EN10028-2 P355NH |
|---|---|---|---|
| Yield Strength | 345 MPa | 260 MPa | 355 MPa |
| Tensile Strength | 510-640 MPa | 485-620 MPa | 490-630 MPa |
| Impact Test Temp | 0°C (min) | -29°C | -20°C |
| Max Thickness | 450mm | 200mm | 150mm |
| Best For | Chinese & global projects seeking cost-performance balance | North American market | European market |
GNEE's Q345R Commitment: Quality You Can Trust
At GNEE Steel, we don't just supply Q345R plates-we deliver complete pressure vessel solutions:
| Our Promise | What You Receive |
|---|---|
| Certified Quality | Full compliance with GB/T 713-2023, EN 10204 3.2 certification |
| Custom Solutions | Cut-to-size, beveling, shot blasting, and special coating options |
| Technical Support | Engineering team assistance for material selection and design optimization |
| Reliable Delivery | 7-14 days for standard sizes (10mm-50mm × 2000mm × 6000mm); 3-4 weeks for custom orders |
| Global Reach | Exported to 70+ countries with 600+ satisfied partners |
| Competitive Pricing | Direct factory pricing with no middlemen markup |
Conclusion: Choose GNEE for GB713 Q345R Pressure Vessel Plates
With GNEE's GB713 Q345R Pressure Vessel Plates, you get high-strength, reliable steel suitable for demanding industrial environments.
Contact GNEE today for fast quotations, global delivery, and tailored solutions for your pressure vessel or industrial project.
FAQ
What is Q345R material?
Q345R is common low alloy steel, it is the boiler pressure vessel commonly used steel type, the delivery state: hot rolled or normalization.
What is Q345 equivalent material in ASME?
ASME A572
Q345 steel is one kind of Chinese standardized low alloy, medium tensile strength steel made with a hot-rolling process, used for a number of manufacturing purposes. To some extent, the Q345 possesses the same property and composition of ASME A572, namely the Q345 is equivalent to A572.
Is Q345 steel good?
Q345 series steel has good mechanical properties, good plasticity and weldability, and is widely used in buildings, Bridges, vehicles, ships, pressure vessels, etc.
What is Q345R equivalent ASTM material ?
Q345R is a low alloy steel used to build pressure vessels in China that is equivalent to ASTM A516/A516M Grade 70 medium carbon steel. It includes carbon and alloy steels for high, intermediate, and low temperature applications.
What is the difference between q235b and q345r?
High Strength and Toughness
Q235 steel has a yield strength of 235 MPa (38 ksi) for thicknesses < 17mm, and a tensile strength of 375-500 MPa, whereas, Q345 steel has a yield strength of 345 MPa (50 ksi) for thicknesses < 17mm, and a tensile strength 470-630 MPa.
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