China Yuantai EN10219 Cold Rolled Steel Square Tube Suppliers - High-Strength Factory for Sustainable Infrastructure
Premium EN10219 Cold Rolled Steel Square Tube for Structural Excellence
Yuantai Derun Steel Pipe Group, a Top 500 Chinese Manufacturing enterprise, presents its flagship product: the EN10219 Cold Rolled Steel Square Tube. Designed to meet the most rigorous international benchmarks, our square tubes are the cornerstone of modern, sustainable construction and industrial fabrication.
The cold-rolling process is pivotal, transforming steel through precise mechanical deformation at room temperature. This critical technique work-hardens the steel, significantly enhancing its yield strength and surface quality compared to hot-formed alternatives. It ensures exceptional dimensional accuracy, straightness, and a smooth, uniform finish that is ideal for subsequent processes like painting or powder coating.
🏅 Certified for Global Standards: Engineered in compliance with the EN 10219 standard, which governs cold-formed welded structural hollow sections, our tubes guarantee consistent mechanical properties, geometric tolerances, and weldability essential for European and global projects. As an ISO9001, CE (10219), and BV-certified manufacturer, we commit to delivering not just a product, but a certified component of structural integrity.
Unmatched Product Advantages and Key Selling Points
Choosing Yuantai Derun's EN10219 Cold Rolled Square Tubes translates into tangible benefits for your projects:
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Superior Structural Integrity & Strength The cold-forming process increases material density and yield strength, resulting in a high strength-to-weight ratio. This allows for lighter, more efficient structural designs without compromising safety or load-bearing capacity.
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Exceptional Dimensional Accuracy and Consistency Our state-of-the-art 65 ERW/HFW lines and advanced cold-roll forming technology produce tubes with tight tolerances on outer dimensions, wall thickness, and squareness. This precision simplifies fabrication, reduces waste, and ensures perfect fit-up during assembly.
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Outstanding Surface Quality A smooth, clean, and scale-free surface is a hallmark of our cold-rolled tubes. This superior finish minimizes the need for extensive surface preparation, enhances corrosion resistance of applied coatings, and provides an aesthetically pleasing appearance for architectural applications.
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Excellent Weldability and Formability The controlled manufacturing process and use of prime steel from mills like HBIS and Baosteel ensure a homogeneous microstructure. This guarantees clean, strong welds and good ductility for secondary forming operations, offering unparalleled flexibility in fabrication.
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Commitment to Sustainability Aligned with our vision for a greener future, the efficiency of cold-formed production and the material efficiency of hollow sections contribute to a reduced environmental footprint. Our products and operations are certified to ISO14001 environmental management standards.
Comprehensive Product Specifications and Capabilities
Our manufacturing prowess ensures we can meet diverse and demanding requirements. We utilize prime steel sourced from leading state-owned mills, processed through our integrated operations spanning 1,600 acres.
Technical Specifications at a Glance
The table below summarizes our core production range for EN10219 Cold Rolled Square Tubes:
| Parameter | Specification Range |
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| Standard Compliance | EN 10219, CE Marked, ISO 9001, BV, JIS, etc. |
| Material Grades | S235JR, S275JR, S355JR, S355J2H, etc., and equivalents. |
| Square Tube Dimensions | 10×10mm to 500×500mm (Standard range). Capable up to 1000×1000mm. |
| Wall Thickness | 0.5mm to 60mm (Standard range for cold-rolled). |
| Length | Standard lengths up to 12m/18m. Custom lengths available upon request. |
| Process | Cold Roll Forming + High-Frequency Welding (HFW) or Electric Resistance Welding (ERW). |
| Surface Finish | Mill finish (smooth, oiled), Pre-galvanized, or Black (ready for painting). |
| Main Applications | Structural frameworks, Architectural glazing & canopies, Machinery & equipment frames, Agricultural and industrial storage systems, Renewable energy supports, Artistic installations. |
About Yuantai Derun
Founded in 2002 and headquartered in China's largest steel pipe production base, our vertical integration—from manufacturing and stringent QA to logistics and trade—ensures full control over quality and supply chain reliability. With a registered capital of 700M RMB and over 2,200 professionals, we combine scale with expertise.
Ordering and Final Assurance
💼 Every length of our EN10219 Cold Rolled Steel Square Tube is a testament to our commitment to "driving innovation in the industry." We invite you to experience the Yuantai Derun difference—where global compliance, unwavering quality, and a vision for sustainable development converge to deliver structural solutions you can build upon with absolute confidence. Contact our sales team today for competitive quotations, detailed technical data sheets, and collaborative project support. Let's construct a stronger, more efficient future together.
Frequently Asked Questions
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What is the EN10219 standard and why does it matter for cold rolled steel square tubes?
EN 10219 is a European standard that governs cold-formed welded structural hollow sections, including square and rectangular tubes. It defines strict requirements for mechanical properties, dimensional tolerances, and surface quality. Compliance with EN 10219 ensures that the tubes are suitable for use in structural applications across Europe and internationally, providing engineers and contractors with confidence in the product's performance and safety.
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What are the key differences between cold rolled and hot formed steel square tubes?
Cold rolled steel square tubes are formed at room temperature through mechanical deformation, which work-hardens the steel and results in higher yield strength, tighter dimensional tolerances, a smoother surface finish, and better consistency. Hot formed tubes are shaped at elevated temperatures, making them better suited for larger, thicker sections but generally offering less precision and a rougher surface. Cold rolled tubes are preferred where dimensional accuracy, surface quality, and higher strength-to-weight ratios are priorities.
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What material grades are available for EN10219 cold rolled steel square tubes?
Yuantai Derun offers a wide range of material grades to suit various structural and industrial requirements, including S235JR, S275JR, S355JR, S355J2H, and their international equivalents. Custom grades can also be accommodated upon request to meet specific project or regional standards. All materials are sourced from leading state-owned mills such as HBIS and Baosteel to ensure consistent quality.
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What size range of cold rolled steel square tubes can Yuantai Derun supply?
Our standard production range covers square tube dimensions from 10×10mm up to 500×500mm, with wall thicknesses from 0.5mm to 60mm. We are also capable of producing tubes up to 1000×1000mm for specialized large-scale projects. Standard lengths up to 12m or 18m are available, and custom lengths can be produced upon request to minimize on-site cutting and waste.
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What certifications does Yuantai Derun hold for its cold rolled steel square tubes?
Yuantai Derun Steel Pipe Group holds multiple internationally recognized certifications, including ISO 9001 (Quality Management), CE marking under EN 10219, Bureau Veritas (BV) certification, and ISO 14001 (Environmental Management). These certifications reflect our commitment to consistent quality, product safety, and sustainable manufacturing practices, making our tubes accepted for projects across Europe and global markets.
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What are the typical applications of EN10219 cold rolled steel square tubes?
EN10219 cold rolled steel square tubes are widely used across a broad range of industries and applications, including structural building frameworks, architectural glazing systems and canopies, machinery and equipment frames, agricultural and industrial storage systems, renewable energy support structures (such as solar panel mounting), and artistic or decorative architectural installations. Their high precision, smooth surface, and excellent weldability make them suitable for both functional and aesthetic structural uses.