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EN 10219 is the European standard for cold-formed, un-heat-treated welded steel hollow sections, covering round, square, and rectangular tubes. These products are classified as construction materials within the EU and must comply with the CPR-Regulation (EU) No. 305/2011 under the CE marking. The implementation of this standard ensures consistency in manufacturing, inspection, and application of structural steel tubes.
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Scope of EN 10219
The standard applies mainly to cold-formed welded hollow sections used in load-bearing building and engineering structures. It defines requirements for:
Chemical composition
Manufacturing process
Mechanical properties
Dimensional tolerances
Surface quality
Welding quality
Inspection & certification
Structure of the Standard
EN 10219-1: Technical Delivery Conditions
Material Requirements
Defines applicable steel grades (EN 10219 / EN 10210 references).
Specifies strength and toughness requirements for structural use.
Manufacturing Process of EN 10219 Cold-Formed Welded Structural Hollow Sections
Hollow sections are produced by cold-forming and edge welding, unlike hot-formed sections.
Welding Requirements of EN 10219 Cold-Formed Welded Structural Hollow Sections
Strict welding procedures, welder qualifications, and weld quality checks (including non-destructive testing).
Chemical Composition of EN 10219 Cold-Formed Welded Structural Hollow Sections
Specifies element ranges (C, Si, Mn, P, S) to ensure weldability, toughness, and durability.
For structural applications, lower sulfur and phosphorus improve ductility and service life.
Mechanical Properties of EN 10219 Cold-Formed Welded Structural Hollow Sections
Minimum requirements for:
Yield strength (ReH): ≥ 235 MPa
Tensile strength (Rm): ≥ 400 MPa
Elongation (A): adequate ductility for forming
Additional requirements for hardness and impact toughness ensure reliability under load.
Dimensions and Tolerances of EN 10219 Cold-Formed Welded Structural Hollow Sections
Specifies allowable deviations in diameter, wall thickness, straightness, and corner radii.
Ensures compatibility for connections and load-bearing stability.
Appearance Quality
Tubes must be free of cracks, dents, corrosion, and other visible defects.
Surface quality is critical for subsequent coating and corrosion protection.
Inspection and Testing
Includes tensile, impact, flattening, and flaring tests, with defined testing frequencies.
Marking and Certification
Products must be marked with standard number, grade, size, and manufacturer.
Compliance is verified via Factory Production Control (FPC) certificates.
EN 10219-2: Dimensions and Cross-sectional Properties
Provides detailed dimension tables, sectional properties (area, moment of inertia, section modulus), and tolerances.
Used by engineers and designers for structural analysis and calculations.
EN 10219 vs. EN 10210
EN 10219 (Cold-formed):
Produced at room temperature by cold bending and welding.
Advantages: precise dimensions, smooth surface, thinner walls.
EN 10210 (Hot-formed):
Produced at high temperatures by piercing, rolling, or extrusion.
Advantages: thicker walls, higher toughness, larger corner radii.
Common Steel Grades under EN 10219
Structural grades (S series): S235JRH, S275J0H, S355J2H, S355K2H, etc.
Pipeline grades (L series): L245NB, L290NB, etc.
Suffix "H" = Hollow section.
Applications of EN 10219 Cold-Formed Welded Structural Hollow Sections
EN 10219 hollow sections are widely used due to their high strength-to-weight ratio, design flexibility, and durability:
Building structures: airport terminals, stadiums, shopping centers, offices.
Space frames & trusses: large-span, column-free structures.
Machinery & vehicles: cranes, agricultural equipment, chassis.
Bridges: girders, supports, pedestrian bridges.
Furniture & interiors: stairs, railings, decorative elements.
Conclusion
EN 10219 is the key European standard for cold-formed welded structural hollow sections. It guarantees uniform quality, dimensional accuracy, and reliable mechanical performance, giving designers and engineers a solid basis for safe and efficient structural solutions.
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