EN 10219-2 Cold Formed Welded Structural Hollow Sections (Pipe/Tubing) for Building Construction

Material

EN 10219 cold formed welded structural hollow sections are load-bearing steel tubes manufactured by cold-forming strip/plate into a closed section and producing a continuous weld (commonly ERW/HF). EN 10219-2 governs tolerances, dimensions, and sectional properties, while steel grades and delivery requirements are defined in EN 10219-1.

Typical grade options (examples): S235JRH, S275J0H, S355J2H (non-alloy structural steels) and S420MH, S460MH (fine-grain, thermomechanically rolled steels).

Specifications

• Product forms: CHS (round), SHS (square), RHS (rectangular), EHS (elliptical)

• EN 10219-2 scope (size capability):

  • Wall thickness: up to 40 mm

  • Circular OD: up to 2,500 mm

  • Square: up to 500 × 500 mm

  • Rectangular: up to 500 × 300 mm

  • Elliptical: up to 480 × 240 mm

• Supply condition: as-welded/cold-formed (per EN 10219 family), optional surface protection (black/oiled/painted/galvanized), cut-to-length available

• Typical lengths: 6 m / 12 m, or as required by drawings and packing rules

Key Features

• Dimensional consistency for fabrication: EN 10219-2 defines tolerances and sectional-property calculation rules used in structural design and detailing.

• High strength-to-weight ratio: closed hollow sections provide excellent buckling resistance and clean load paths for frames and trusses.

• Weldable, production-friendly: suited for automated cutting, drilling, and welding when ordered with the right toughness and certificate level.

Our Advantages 

1) “How do I prove compliance (and avoid mixed heats or questionable paperwork)?”

We support heat/batch traceability with EN 10204 Type 3.1 inspection documentation when specified, including actual chemical/mechanical results and clear linkage to delivered goods. For EU construction supply chains, documentation and traceability are commonly tied to CE/EN 1090 execution routes; reputable producers explicitly reference 3.1 documentation and structural suitability in their DoP/AVCP workflow.

2) “Welded tube = weld seam risk. What do you do about weld integrity?”

For structural hollow sections, weld quality is managed through controlled welding parameters plus inspection. Full-length weld NDT is commonly specified by leading producers for EN 10219 products, and additional NDT methods (e.g., radiographic testing of weld seams) are standardized in ISO tube-testing practices. We can align inspection scope (visual, UT/RT where required) with project specs.

3) “Will it meet tolerance and fit-up requirements on site?”

EN 10219-2 is specifically written to control dimension and shape tolerances and provides the basis for sectional properties used in structural design. When you build to this tolerance system, fit-up improves (less rework on connection plates, better squareness/straightness targets, more predictable end-prep and assembly).

Chemical Composition

Mechanical Properties

Execution Standards

• EN: EN 10219-1 (technical delivery conditions) + EN 10219-2 (tolerances, dimensions, sectional properties)

• ASTM: ASTM A500/A500M (cold-formed welded and seamless carbon steel structural tubing for buildings/bridges)

• JIS: JIS G 3466 (carbon steel square/rectangular tubes for civil engineering/architecture structures)

• GOST: GOST 30245 (welded closed square/rectangular sections for building steel structures)

• GB: GB/T 6728 (cold forming sectional steel for general structure)

Application Areas

Primary field: Building and civil engineering structures.
Typical uses within the field (examples):

• Building frames: columns, beams, bracing members, trusses, portal frames

• Infrastructure: bridge sub-frames, towers/masts, stations, shelters

• Architectural steelwork: façade sub-frames, canopies, handrails/guards, atriums

• Industrial buildings: platforms, equipment frames, conveyor and rack structures