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Home > Metallurgy, Mineral & Energy > Steel & Products > Steel H Beam > Q345B H Beam Structural Steel Welded H-Shaped Steel for Building Frame With Length 6m-12m

Q345B H Beam Structural Steel Welded H-Shaped Steel for Building Frame With Length 6m-12m

Q345B H Beam Structural Steel Welded H-Shaped Steel for Building Frame With Length 6m-12m thumbnail-3

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Q345B H Beam Structural Steel Welded H-Shaped Steel for Building Frame With Length 6m-12m photo-4

Q345B H Beam Structural Steel Welded H-Shaped Steel for Building Frame With Length 6m-12m photo-5

Product Spotlights

Our Q345B welded H beam offers custom sizes (6m-12m), high strength (≥345MPa yield), ISO 9001 quality, and competitive pricing. Ideal for building frames, it ensures fast installation, design flexibility, and reliable performance. Backed by Hemaokang Steel's global export experience and fast shipping from Qingdao.

Negotiable MOQ: 1 Ton (Price negotiable depending on order volume and customization)

Key Specifications

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Standard:

Other, GB/T 11263 (Chinese Standard)

Certification:

Other, ISO 9001

Material:

Q345B (Low Alloy High Strength Steel)

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Hemaokang Steel (Shandong) Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

Qingdao Port

Delivery Detail:

7 days

Product Details
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Standard Other, GB/T 11263 (Chinese Standard)

Certification Other, ISO 9001

Material Q345B (Low Alloy High Strength Steel)

Length 6m - 12m (customizable)

Type Welded H-Shaped

Application Building Frame, Structural Support

Surface Treatment Black, Painted, or Galvanized (optional)

Flange Width 100mm - 400mm (customizable)

Web Height 100mm - 900mm (customizable)

Thickness 5mm - 25mm (customizable)

Welcome to Hemaokang Steel (Shandong) Co., Ltd. – your reliable partner for high-quality structural steel solutions. Our Q345B H Beam Structural Steel Welded H-Shaped Steel is specifically engineered for building frame applications, offering exceptional strength, stability, and cost-effectiveness. Manufactured with precision welding and strict quality control, this product meets the demanding requirements of modern construction projects. With lengths ranging from 6m to 12m, our H beams provide versatile solutions for various structural needs, ensuring fast installation and long-term durability.

Product Features and Technical Specifications:

High-Strength Material: Made from Q345B low-alloy high-strength steel, offering excellent yield strength (≥345 MPa) and tensile strength (470–630 MPa), ideal for heavy-load bearing structures.
Welded Construction: Precision welded from three plates (flanges and web) to ensure uniform stress distribution and dimensional accuracy, with smooth weld seams and no defects.
Customizable Dimensions: Flange width from 100mm to 400mm, web height from 100mm to 900mm, and thickness from 5mm to 25mm – all customizable to meet project specifications.
Length Options: Standard lengths of 6m, 9m, and 12m, with custom lengths available upon request to minimize waste and reduce on-site cutting.
Surface Treatment: Available in black (mill scale), painted (anti-corrosion coating), or hot-dip galvanized finish for enhanced corrosion resistance in harsh environments.
ISO 9001 Certified: Our production process is certified under ISO 9001, ensuring consistent quality and traceability from raw material to finished product.

Parameter	Value
Standard	GB/T 11263
Material Grade	Q345B (equivalent to ASTM A572 Gr.50)
Yield Strength	≥ 345 MPa
Tensile Strength	470–630 MPa
Elongation	≥ 21%
Length Tolerance	± 50mm
Weld Quality	100% ultrasonic tested (optional)

Benefits for Your Building Projects:

Enhanced Structural Integrity: The H-shaped profile provides excellent load-bearing capacity and bending resistance, making it ideal for columns, beams, and trusses in multi-story buildings and industrial facilities.
Cost Efficiency: Welded H beams offer a more economical solution compared to hot-rolled sections for non-standard sizes, allowing you to optimize material usage and reduce project costs.
Fast Installation: Precisely cut to length and ready to weld or bolt, our H beams reduce on-site labor and construction time, accelerating project schedules.
Design Flexibility: Custom dimensions enable architects and engineers to achieve specific structural requirements without compromising on safety or performance.
Corrosion Resistance Options: Choose from various surface treatments to extend the service life of your structure, even in coastal or industrial environments.

Trust Hemaokang Steel – Your Quality Partner

Hemaokang Steel (Shandong) Co., Ltd. was established in 2025 with a strong commitment to excellence. We have an annual export value of US$50 million to US$100 million, serving markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and Asia. Our team of 51–100 skilled professionals ensures that every product meets rigorous quality standards. With convenient shipping from Qingdao Port, we guarantee timely delivery worldwide. Our ISO 9001 certification reflects our dedication to quality management and customer satisfaction. Choose Hemaokang Steel for your next building frame project – contact us today for a quote or technical consultation!

Frequently Asked Questions (FAQ)

Q: What is the difference between Q345B H beam and hot-rolled H beam? A: Q345B H beam can be either welded or hot-rolled. Our welded H beam is fabricated from three plates, offering flexibility in custom sizes and lower cost for non-standard dimensions, while maintaining comparable strength.
Q: Can you provide H beams with different lengths outside 6m-12m? A: Yes, we can customize lengths up to 18m depending on transportation constraints. Please contact us with your specific requirements.
Q: Is the H beam suitable for seismic zones? A: Q345B steel has good ductility and energy absorption capacity, making it suitable for earthquake-resistant structures when designed according to local building codes.
Q: What surface treatments are available? A: Standard options include black (mill scale), painted (red oxide or epoxy), and hot-dip galvanized. We can also apply other coatings upon request.
Q: How do you ensure the quality of the welded H beam? A: We perform visual inspection, dimensional checks, and optional ultrasonic testing on welds. Our ISO 9001 system ensures traceability and consistency.
Q: What is the minimum order quantity (MOQ)? A: Our MOQ is typically 10 tons per size, but we can negotiate smaller quantities for sample orders or trial projects.
Q: Do you provide third-party inspection? A: Yes, we welcome inspection by SGS, BV, or other third-party agencies at the buyer's cost. We can arrange it upon request.
Q: What is the delivery time for a standard order? A: For standard sizes and quantities, delivery is usually 15–20 working days after receipt of deposit. Custom orders may take longer.