EN 10219 ERW pipe

EN10219 is a European standard that provides detailed regulations and requirements for the dimensions, mechanical properties, chemical composition and other aspects of steel pipes. With its excellent strength, stable performance and high cost performance, it plays an important role in multiple industries such as construction, mechanical manufacturing and energy engineering.

What is EN 10219 ERW steel pipe?

Standard EN 10219 specifies cold-formed welded hollow steel sections made of non-alloy steel and fine-grained steel. ERW steel pipes produced in accordance with this standard usually include circular, square and rectangular cross-sections. The manufacturing process involves rolling steel strips into the required shape and then performing resistance welding with high-frequency current to obtain pipes with uniform wall thickness, precise dimensions and smooth surface.

Common steel grades

The common steel grades in EN 10219 include S235JRH, S275J0H, and S355J2H.

The numerical part (235/275/355) indicates the minimum yield strength (MPa);

JR/J0/J2 represent the impact toughness test temperatures (20℃, 0℃, -20℃).

H stands for Hollow Section (hollow cross-section).

For instance, S355J2H not only has a yield strength as high as 355MPa, but also maintains excellent impact toughness at -20℃, making it highly suitable for structural applications in low-temperature environments.

The advantages of EN 10219 ERW steel pipe

High strength and toughness: Suitable for load-bearing structures and complex projects.

Excellent welding performance: The weld seam performance is close to that of the base material, with high reliability.

High dimensional accuracy: The cold forming process ensures uniform product specifications.

Diverse shapes: Round tubes, square tubes and rectangular tubes can all be produced.

Outstanding economic performance: Compared with seamless steel pipes, the production cost is lower.

Typical application fields

EN 10219 ERW steel pipes are widely used in multiple fields:

Construction engineering: high-rise buildings, Bridges, stadiums, steel structure factories;

Mechanical manufacturing: mechanical frames, agricultural machinery equipment, lifting machinery;

Energy and Infrastructure: Wind power towers, photovoltaic brackets, power transmission structures;

Traffic and Safety: Highway guardrails, railway structures, scaffolding, storage shelves.

The differences between EN 10219 and EN 10210

EN 10219: Cold-formed welded hollow cross-section, economical and practical, widely used in general structural engineering.

EN 10210: Thermoformed hollow cross-section, more stable performance, suitable for extreme environments and special requirements.

Conclusion

With advantages such as high strength, good welding performance and superior economy, EN 10219 ERW steel pipe has become an important material in the construction, machinery and energy industries. In modern engineering projects, ERW steel pipes not only provide reliable structural support but also take into account cost and efficiency.