High Strength Structural Steel - EN Certified Supplier

Zhonghe Building Materials Co., Ltd.

Verified Custom manufacturer · 3 yrs ·

China

High strength structural steel for building

Customizable Rock-bottom price

$513 1-49 ton Base price

$490 50-99 ton 4.5% off

$479 ≥100 ton 6.6% off

Price validity: subject to market conditions

Supplier's customization ability

Drawing-based customization
Sample-based customization
Full customization

Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 513.00

Start order request

Payment and delivery

Payment:: by contract — deposit, balance after your inspection
Lead time:: confirmed with the quotation
Packaging:: standard export packing
Samples:: available on request

Product details

Technical Specifications of High Strength Structural Steel for Building

Property	Parameter	Description
Product Name	High Strength Structural Steel for Building	Heavy-duty steel designed for load-bearing building structures and frames
Material Grade	Q345B / Q390B / Q420C / S355JR / A572 Gr.50	Equivalent grades: EN 10025 S355JR, ASTM A572 Grade 50, JIS G3106 SM490
Standard Compliance	GB/T 1591, EN 10025-2, ASTM A572, JIS G3106	Meets international structural steel standards for building construction
Chemical Composition (C)	≤ 0.20%	Low carbon content ensures good weldability and toughness
Chemical Composition (Mn)	1.00% – 1.70%	Manganese enhances strength and hardenability
Chemical Composition (Si)	≤ 0.55%	Silicon improves deoxidation and strength
Chemical Composition (P / S)	P ≤ 0.035% / S ≤ 0.035%	Controlled phosphorus and sulfur for improved ductility and impact resistance
Tensile Strength	470 – 630 MPa	Per GB/T 1591 Q345B; S355JR per EN 10025-2: 470–630 MPa
Yield Strength	≥ 345 MPa (t ≤ 16 mm)	Minimum yield strength decreases with increasing thickness per standard
Elongation	≥ 20%	Longitudinal elongation at fracture ensuring structural ductility
Impact Toughness	≥ 34 J at 0°C (Charpy V-notch)	Suitable for cold-climate building applications
Dimension Range	Thickness: 6–150 mm; Width: 1500–4200 mm; Length: 6000–18000 mm	Available as plates, sheets, and structural sections (H-beam, angle, channel)
Surface Finish	Hot-rolled, Blast-cleaned (Sa2.5), Primer-coated	Standard mill finish; anti-rust treatment available upon request
Application	High-rise buildings, bridges, industrial plants, steel frames, trusses	Widely used in structural engineering and civil construction projects
Certification	ISO 9001, CE Marking, Mill Test Certificate (EN 10204 3.1/3.2)	Third-party inspection by SGS, BV, TÜV available
Packaging	Bundle with steel strip; waterproof paper + steel plate protection	Sea-worthy export packing; bare or bundled per customer requirement
MOQ	25 Metric Tons per grade/size	Mixed sizes accepted; spot stock available for standard grades

High Strength Structural Steel - EN Certified Supplier

High strength structural steel for building is the backbone of modern construction, enabling engineers and architects to design safer, taller, and more durable structures with greater material efficiency. Unlike conventional mild steel, these premium-grade alloys deliver yield strengths typically ranging from 355 MPa to 960 MPa, allowing for reduced section sizes without compromising load-bearing capacity. As an EN-certified supplier, we source and distribute structural steel plates, beams, and sections that fully comply with EN 10025, EN 10210, and EN 10219 standards. Our product portfolio serves critical roles in multi-storey commercial buildings, industrial warehouses, bridge frameworks, and seismic-resistant structures across Europe, Asia, and North America. Whether your project demands S355, S420, S460, or ultra-high-strength S690 grades, our mill-direct supply chain ensures consistent mechanical properties, certified chemical compositions, and reliable delivery schedules tailored to your construction timeline.

What is High Strength Structural Steel for Building?

High strength structural steel for building refers to a category of low-alloy, high-strength (HSLA) steel engineered specifically for load-bearing applications in civil and structural engineering. Produced with controlled additions of manganese, silicon, niobium, and vanadium, these steels achieve superior yield strength — typically 355 MPa to 690 MPa — combined with excellent weldability, toughness at sub-zero temperatures, and fatigue resistance, making them indispensable in demanding construction environments.

High Strength Structural Steel for Building Manufacturing Process

Production begins with electric arc furnace (EAF) or basic oxygen furnace (BOF) steelmaking, followed by secondary metallurgy refining to achieve precise chemical compositions with carbon equivalents below 0.43%. Thermomechanical controlled processing (TMCP) or quenching and tempering (Q&T) heat treatment is then applied to develop the fine-grained microstructure responsible for the steel's exceptional strength-to-weight ratio. Final products undergo ultrasonic testing and dimensional inspection before certification.

High Strength Structural Steel for Building Technical Specifications

Our structural steel grades conform to EN 10025-2, EN 10025-3, and EN 10025-6 standards, covering the following key parameters:

Grades available: S275, S355, S420, S460, S550, S620, S690
Yield strength: 275 MPa (S275) up to 690 MPa (S690) minimum
Tensile strength: 430 MPa to 890 MPa depending on grade and thickness
Charpy impact toughness: 27 J minimum at −40°C (sub-grade ML/QL)
Density: 7.85 g/cm³ at 20°C
Thickness range: 3 mm to 150 mm plates; standard sections per EN 10034
Carbon equivalent (CEV): ≤ 0.43% for enhanced field weldability
Surface condition: Mill scale, shot blasted (Sa 2.5), or primed finishes available

All mill test certificates (EN 10204 3.1 or 3.2) are provided with each shipment, ensuring full traceability from melt to delivery.

High strength structural steel for building supplier

Get a Competitive Quote for High Strength Structural Steel

Ready to source EN-certified high strength structural steel for building at mill-direct rates? Our technical team is on hand to recommend the optimal grade for your specific load requirements, climate conditions, and fabrication methods. Submit your inquiry today and receive a detailed quotation within 24 hours, backed by our commitment to quality, traceability, and on-time delivery.

24/7 customer support available
Free samples for quality evaluation
Competitive pricing for bulk orders
Professional technical consultation

Contact us today to get your free quote within 24 hours!

High strength structural steel for building manufacturer

High strength structural steel for building China factory

Ratings & Reviews

4.5

Based on 8 reviews

5 5

4 2

3 1

2 0

1 0

Aaron Mitchell

United States

2025-02-01

Initial thickness tolerance issue — resolved promptly, project not impacted

We ordered 30 tonnes of S550 plates (EN 10025-6, 50mm nominal thickness) for a heavy-load industrial mezzanine. On incoming inspection, four plates measured 48.6mm — slightly outside the EN 10029 Class B tolerance we'd specified. Raised this immediately with the supplier. They responded within 4 hours, arranged replacement plates dispatched within 5 business days, and covered the freight cost. Project timeline was not affected. The replacement batch was perfect. Supplier's after-sales response was genuinely good. Dropping one star for the initial QC miss, but their resolution process was professional.

Liam O'Brien

Australia

2025-02-22

Competitive S460 pricing, delivery tracking could be improved

Ordered 50 tonnes of S460 plates (EN 10025-4, TMCP, 30mm) for a pedestrian bridge structure in Queensland. Material met all mechanical specs — Charpy values at −40°C were well above 27J. Price per tonne was noticeably better than Australian domestic suppliers for this grade. My main feedback: real-time shipment tracking updates were sparse between port departure and arrival. We had to email twice for ETAs. Quality and price are strong enough that we'd order again, but improved logistics visibility would make this a 5-star experience.

David Hargreaves

United Kingdom

2025-03-16

Good value on S275 sections — minor documentation delay worth noting

Purchased 75 tonnes of S275 hot-rolled angles and channels (EN 10025-2) for a light industrial unit fit-out. Material quality was solid — yield strength confirmed at 285 MPa on our incoming inspection, above the 275 MPa minimum. Pricing was around 6% below our usual UK stockholder, which matters on tight-margin contracts. Only issue: EN 10204 3.1 certificates arrived two days after the steel, causing a brief hold on our fabrication sign-off. Supplier acknowledged this and said they've updated their dispatch process. Would order again.

Know your supplier

Zhonghe Building Materials Co., Ltd.

3 yrs on Sinoali.com

Located in China

Company information More goods

FAQ

Q: What standards do your structural steel products comply with?

A:Our structural steel mainly conforms to international standards such as ASTM, EN, BS, JIS and GB, which can meet different project requirements.

Q: Can you provide MTC (Mill Test Certificate) for each batch?

Q: What is the yield strength of your structural steel?

Q: Do you accept customized sizes and lengths?

Q: Can you offer anti-corrosion treatment like painting or galvanizing?

Q: What packaging and loading methods do you use?

Product display

Zhonghe Building Materials Co., Ltd. is a professional industrial manufacturer and supplier focusing on high-quality building materials. We specialize in a full range of steel building materials, covering reinforcing steel bars, galvanized steel products, corrugated steel sheets, structural steel pipes and other related metal construction materials.

Equipped with advanced production lines and precision testing equipment, the company implements strict full-process quality control and holds authoritative industry qualification certificates. We maintain sufficient spot inventory, adopt standardized export packaging, and ensure stable delivery cycles to meet global customer demands.

Our products are widely applied in construction engineering, machinery manufacturing, shipbuilding, energy and infrastructure projects. Adhering to the principle of quality first and customer-oriented service, we are committed to providing reliable building material solutions and long-term stable cooperation for global clients.