Learn About the Latest Q420 Steel Plate/Sheet Price, Specifications and Dimensions.
Q420B Q420C Q420D Q420E Steel Plate | GB/T 1591 High Strength Steel
Q420B/C/D/E is a high strength low alloy structural steel plate under GB/T 1591-2018. Q420 steel is a high quality, versatile steel with outstanding strength and corrosion resistance which is utilized in high strength steel plate applications.
Grade Q420B Q420c Q420d Q420e high strength steel plate Q420 plate Q420B, Q420C, Q420D, and Q420E steel plate has excellent performance in engineering, especially suitable for manufacture of steel tower, heavy machinery, industrial building, bridge and super large capacity bearing.
Royal Steel Group offer Q420 steel plate in standard and special sizes for the international building, engineering and machinery manufacturing.
| Item | Specification |
| Product Name | Q420 High Strength Structural Steel Plate |
| Steel Grades | Q420B / Q420C / Q420D / Q420E |
| Applicable Standard | GB/T 1591-2018 |
| Minimum Yield Strength | ≥420 MPa |
| Tensile Strength | 520–680 MPa |
| Standard Thickness | 1/4"–4" (6–100 mm) |
| Standard Width | 48"–144" (1220–3658 mm) |
| Standard Length | 96"–480" (2438–12192 mm) |
| Maximum Length | Up to 1020" (25910 mm), subject to production requirements |
| Surface | Mill finish / customized treatment |
| Processing | Cutting, drilling, bending, welding and fabrication available |
| Applications | Steel towers, heavy equipment, industrial structures, bridges and load-bearing structures |
Q420 was divided into grades to cater for different engineering and environmental conditions.
Q420B: Intended for use in normal structural applications under ordinary service conditions.
Q420C: Offers higher impact toughness than Q420B and can be used for severer structural applications.
Q420D: Developed for use in applications with higher low temperature impact toughness requirements.
Q420E: Applicable for severe low temperature service and higher impact toughness.
The suitable grade should be selected based on project design requirements, operating temperature, loading conditions and the relevant specifications.
High Strength-to-Weight Ratio
Q420 steel, with a minimum yield strength of 420 MPa, can support high loads with a possible weight reduction of structural members when compared to lower strength structural steels.
Excellent Structural Performance
Q420 steel is developed for applications with high load-bearing requirements and provides a dependable balance of strength, toughness and structural integrity.
Ideal for Fabrication
Q420 steel plate is workable with common fabrication techniques, such as cutting, welding, drilling, bending and machining, as per project requirements and qualified procedures.
Various Quality Grades
Q420B, Q420C, Q420D and Q420E grades enable engineers and purchasers to choose the appropriate grade according to the required environmental and impact toughness.
Custom Size Supply
Royal Steel Group offers Q420 steel plates in standard or customized dimensions, including special lengths and cut-to-size plates for fabrication projects.
Q420 Steel Plate / Sheet Sizes
| Steel Grade | Standard | Thickness | Width | Standard Length | Maximum Length |
| Q420B | GB/T 1591-2018 | 6–100 mm (1/4"–4") | 1220–3658 mm (48"–144") | 2438–12192 mm (96"–480") | Up to 25910 mm (1020") |
| Q420C | GB/T 1591-2018 | 6–100 mm (1/4"–4") | 1220–3658 mm (48"–144") | 2438–12192 mm (96"–480") | Up to 25910 mm (1020") |
| Q420D | GB/T 1591-2018 | 6–100 mm (1/4"–4") | 1220–3658 mm (48"–144") | 2438–12192 mm (96"–480") | Up to 25910 mm (1020") |
| Q420E | GB/T 1591-2018 | 6–100 mm (1/4"–4") | 1220–3658 mm (48"–144") | 2438–12192 mm (96"–480") | Up to 25910 mm (1020") |
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Royal Steel Group can provide customized processing services according to project drawings and requirements to facilitate procurement and fabrication.
Services:
Cut-to-length → Drilling → Bending → Edge processing → Welding / Fabrication → Surface treatment
For large engineering projects, customers can provide drawings, dimensions, quantities, and technical requirements for customized production.
Q420 high strength structural steel plate is widely used in:
Manufacturing of steel towers
Heavy equipment and machinery
Industrial steel structures
Structures carrying large loads
Bridge construction
Engineering and construction projects
Steel fabrication
Structural applications where high strength is required
Royal Steel Group offers Q420B/C/D/E high strength steel plates in building, engineering, machinery manufacturing and industrial projects etc across the globe.Our advantages include：
Various types of structural steel products
Q420B/C/D/E grade is available
Standard and customized size
Size cutting and fabrication services
Quality inspection is rigorous
MTC and 3rd party inspection supported
Export packaging and international logistics
Professional service for steel export
1) Branch Office - Spanish-speaking support, customs clearance assistance, etc.
2) Over 5,000 tons of stock in stock, with a wide variety of sizes
3) Inspected by authoritative organizations such as CCIC, SGS, BV, and TUV, with standard seaworthy packaging
Royal Steel Group is dedicated to quality control at every stage of production and inspection. Depending on the needs of the project, the documentation and the services of inspection may comprise:
Mill Test Certificate (MTC)
Chemical composition inspection
Mechanical property test
Dimension inspection
Surface inspection
Third-party inspection such as SGS
Tailored inspection service as per contractual conditions.
Q420 steel plates are tightly packed for international transportation to prevent damage, deformation, moisture, and surface contamination from being caused by the handling and shipping process.
Transportation options:
Container shipping
Bulk vessel shipping
Flat-rack/container shipping for oversized plates
Customized export packaging
Packing techniques vary based on plate size, weight, destination port, and customer needs.
1. What is Q420 steel?
The Q420 is a Chinese high strength low alloy steel for structural use under GB/T 1591-2018, with the yield strength of 420 MPa.
2. What is difference between Q420B Q420C Q420D and Q420E?
The difference between them is the quality and impact toughness value (used temperature differ). Q420D, Q420E are more high low temperature toughness application.
3. What is the yield strength of Q420 steel?
The minimum yield strength of Q420 steel is 420 MPa by the above grade.
4. What is the application of Q420 steel?
Typical applications are steel towers, heavy equipment, industrial construction, bridges and other High load structural application.
5. Can Q420 steel plate be customized?
Yes. Custom thicknesses, widths, lengths, cut to size plates, drilling, bending, and other processing services can be discussed as per project requirements.
6. Could you provide inspection documents?
Yes MTC and extra inspection or third party inspection document could be delivered as per order and project requirements.
Want to buy Q420B, Q420C, Q420D or Q420E steel plate for your next construction or engineering project?
Please advise your required grade, thickness, width, length, quantity, delivery port and processing requirements. Royal Steel Group can offer a competitive price and customized supply solution.
ROYAL STEEL GROUP
Address
Kangsheng development industry zone,
Wuqing district, Tianjin city, China.
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