The Q345 Carbon Steel Plate is a premium-grade structural steel widely recognized for its superior strength, toughness, and weldability. Produced under strict ASTM, EN, JIS, and GB standards, our steel is supplied with complete mill test certificates, mechanical property reports, and third-party inspection options. With excellent load-bearing capacity, stable corrosion resistance, and wear resistance, this material ensures durability and reliability in critical projects. Whether you require Q345 steel plate for heavy-duty fabrication or Q345 steel sheet for engineering applications, our products guarantee consistent quality and international approval.
High Mechanical Strength: Yield strength of >= 345 MPa, ensuring strong structural performance.
Excellent Processing Ability: Suitable for welding, cutting, bending, and machining without compromising quality.
Stable Performance: Maintains toughness under low temperatures and resists fatigue.
Surface Options: Hot-rolled, pickled, coated, or galvanized finishes available.
International Certification: Backed by ISO, SGS, BV, and CE approvals.
Q345 steel sheet is widely used across industries where strength and reliability are critical:
Construction & Civil Engineering – High-rise buildings, bridges, and large-scale structures.
Energy & Power – Oil rigs, pipelines, storage tanks, and power plant frameworks.
Heavy Machinery – Mining equipment, cranes, tractors, and industrial machines.
Transport & Shipbuilding – Railway wagons, shipping containers, hulls, and offshore platforms.
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|
C |
|
|
P |
S |
|
V |
|
|
|
|
Q345B |
0.20 |
0.50 |
1.70 |
0.030 |
0.030 |
0.07 |
0.15 |
0.20 |
0.30 |
0.50 |
|
Q345C |
0.20 |
0.50 |
1.70 |
0.025 |
0.025 |
0.07 |
0.15 |
0.20 |
0.30 |
0.50 |
|
Q345D |
0.18 |
0.50 |
1.70 |
0.025 |
0.020 |
0.07 |
0.15 |
0.20 |
0.30 |
0.50 |
|
Q345E |
0.18 |
0.50 |
1.70 |
0.025 |
0.015 |
0.07 |
0.15 |
0.20 |
0.30 |
0.50 |
|
|
Q345A / Q345B |
Q345C |
Q345D |
Q345E |
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>= 345 (<=16mm thickness) |
>= 345 (<=16mm thickness) |
>= 345 (<=16mm thickness) |
>= 345 (<=16mm thickness) |
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470 – 630 |
470 – 630 |
470 – 630 |
470 – 630 |
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20 – 26 |
20 – 26 |
20 – 26 |
20 – 26 |
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|
<= 200 |
<= 200 |
<= 200 |
<= 200 |
|
|
7.85 |
7.85 |
7.85 |
7.85 |
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|
|
|
|
3mm – 300mm |
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1000mm – 3000mm |
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2000mm – 12000mm |
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At Jiangsu Cunrui Metal Products Co., Ltd., we offer flexible solutions tailored to customer requirements:
Special Sizes: Non-standard thickness, width, and length available.
Processing Services: Precision cutting, CNC drilling, bending, hole punching, and welding.
Material Options: Multiple surface finishes and coatings to match project needs.
Flexible MOQ: From trial orders to large-scale supply.
OEM/ODM Support: Production based on customer drawings or specifications.
Fair unit prices with additional discounts for bulk orders.
Stock available for common sizes; customized orders shipped within 7–20 days.
Export-standard seaworthy packaging for safe international shipping.
Advanced Facility: Equipped with modern rolling mills, cutting lines, and testing equipment.
Large Capacity: Annual output of thousands of tons with stable supply chain.
Export Experience: Serving clients across Europe, the Middle East, Southeast Asia, and beyond.
Strong Certifications: ISO9001, SGS, BV, CE, and other international approvals.
Professional Expertise: Experienced engineering and sales teams providing full support.
Quick Inquiry Response: All RFQs answered within 12 hours.
Technical Guidance: Material selection and application recommendations provided.
Packaging & Transport: Palletized, waterproof, and reinforced for safe long-distance shipment.
After-Sales Guarantee: Quality issues handled through replacement or refund.
Long-Term Cooperation: Dedicated to building lasting partnerships with global buyers.
Q1: What is the difference between Q345 steel plate and Q235 plate?
A1: Q345 has higher yield and tensile strength, making it more suitable for heavy load and structural projects.
Q2: Do you supply Q345 Carbon Steel Sheet with certification?
A2: Yes, we provide MTC, ISO, SGS, BV, and CE certifications for every shipment.
Q3: Can you process according to custom drawings?
A3: Absolutely, we offer cutting, drilling, bending, and fabrication per customer specifications.
Q4: What is the minimum order quantity?
A4: MOQ is flexible, starting from 1 ton for trial orders.
Q5: How long is your delivery time?
A5: For stock sizes, immediate shipment is possible; customized products are usually delivered within 7–20 days.
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