Products Categories

Wholesale Cold Rolled Coil Supplier

Reliable Hot-Dip Galvanized Round Pipe with Long-Term Corrosion Protection

Premium Wholesale Hot-Dip Galvanized Round Pipe Manufacturer

High Performance Hot-Dip Galvanized Round Pipe for Industrial and Construction Applications

High-Quality Hot-Dip Galvanized Round Pipe for Global Construction Projects

YTDR ERW Steel Pipe Solutions with International Standards Compliance

YTDR Durable ERW Steel Pipe with Advanced Manufacturing Technology

Yuantai Derun ERW Steel Pipe for Global Steel Supply

Premium ERW Steel Pipe Manufacturer for Construction and Infrastructure Projects

ERW Steel Pipe – High-Performance Welded Pipe for Global Industrial Applications

Yuantai EN10219 Cold Rolled Steel Square Tube for Sale (1).jpg

Yuantai EN10219 Cold Rolled Steel Square Tube for Sale (2).jpg

Yuantai EN10219 Cold Rolled Steel Square Tube for Sale (3).jpg

Yuantai EN10219 Cold Rolled Steel Square Tube for Sale (4).jpg

China Suppliers Factory for EN10219 Cold Rolled Steel Square Tubes - High Strength & Eco-Friendly Options Available

Yuantai Derun, a leading China supplier, specializes in premium EN10219 cold-rolled steel square tubes. Our high-strength, precision-engineered products are crafted in our state-of-the-art factory, ensuring superior quality and eco-friendliness. With 18 subsidiaries worldwide, we are committed to advancing sustainable infrastructure through reliable manufacturing and supply solutions. Choose us for your cold-rolled steel needs and experience the excellence of a top-tier China supplier

Product Details

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.

✅ ISO9001 · CE (EN10219) · BV Certified — Engineered in compliance with the EN 10219 standard, our tubes guarantee consistent mechanical properties, geometric tolerances, and weldability essential for European and global projects.

As a 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:

💪

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.
📐

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.
✨

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.
🔧

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.
🌱

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 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
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.

Yuantai Derun Steel Manufacturing Facility

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 (FAQ)

What is the EN10219 standard and why does it matter for cold rolled steel square tubes?

EN 10219 is the European standard governing cold-formed welded structural hollow sections of non-alloy and fine grain steels. It defines mandatory requirements for mechanical properties, geometric tolerances, and chemical composition. Compliance ensures that tubes used in structural and architectural applications meet verified safety and quality thresholds, making them acceptable for CE-marked construction projects across Europe and many global markets.

What is the difference between cold rolled and hot formed steel square tubes?

Cold rolled (cold-formed) square tubes are produced at room temperature using precise mechanical forming, which work-hardens the steel and results in higher yield strength, tighter dimensional tolerances, and a smoother surface finish. Hot formed tubes are shaped at elevated temperatures, which can cause scale buildup and slight dimensional variation. Cold rolled tubes are generally preferred for applications requiring precision fit-up, smooth surfaces for coating, and consistent mechanical properties.

What material grades are available for EN10219 Cold Rolled Steel Square Tubes?

Yuantai Derun offers a wide range of steel grades to suit various structural requirements, including S235JR, S275JR, S355JR, and S355J2H as standard EN grades, along with their international equivalents. Custom material grades can be discussed based on project-specific needs. All grades are sourced from prime state-owned mills such as HBIS and Baosteel to ensure consistent quality and homogeneous microstructure.

What size ranges and custom dimensions 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 and standard lengths up to 12m or 18m. We are also capable of producing up to 1000×1000mm for special projects. Custom lengths and dimensions are available upon request, making us suitable for both standard structural projects and specialized industrial or architectural applications.

What certifications does Yuantai Derun hold for its cold rolled square tube products?

Yuantai Derun holds multiple internationally recognized certifications, including ISO 9001 (quality management), CE marking under EN 10219, BV (Bureau Veritas) certification, and ISO 14001 (environmental management). These certifications demonstrate our commitment to producing products that meet rigorous quality, safety, and environmental standards required for global project specifications and procurement requirements.

What surface finish options are available and how does this affect downstream fabrication?

We offer three main surface finish options: Mill finish (smooth and oiled), Pre-galvanized, and Black finish (ready for painting or powder coating). The smooth, scale-free surface of cold rolled tubes significantly reduces the need for surface preparation before coating, improves coating adhesion and corrosion resistance, and delivers an aesthetically appealing result for visible architectural elements. The choice of finish can be discussed during order placement based on your end-use environment and coating requirements.