Core information sorting of EN10025 hot-rolled seamless steel pipe structure

1. Standards and Technical Requirements

Standard scope: EN10025 is a universal standard for hot-rolled structural steel in the European Union, covering non alloy steel and fine-grained structural steel, suitable for seamless steel pipe production in fields such as construction, bridges, and machinery manufacturing.

The standard is divided into 6 parts, including material grade (such as S235JR, S355J2H), chemical composition, mechanical properties, and process requirements.

Key indicators: yield strength (≥ 235MPa~≥ 420MPa), tensile strength (360~570MPa), and low-temperature impact toughness (such as S420ML suitable for -60 ℃ environment).

2. Materials and specifications

Mainstream materials:

Non alloy steel: S235J0, S275NL (for building structures);

Fine grained steel: S355J2H (low temperature resistance), S420ML (high strength and compression resistance).

Product specifications:

Outer diameter/wall thickness: Common outer diameters range from 10mm to 356mm, wall thicknesses range from 1.6mm to 20mm, and support customized special-shaped pipes (such as square pipes and elliptical pipes);

Length: The standard length is 6-12 meters, and non-standard sizes can be customized.

3. Application Fields

Construction engineering: used for steel structure frames, bridge supports, etc., material S355J2H meets high load requirements;

Energy and Petrochemical: S420ML seamless steel pipe suitable for low-temperature oil and gas pipelines and high-pressure vessels;

Mechanical manufacturing: Square rectangular tubes and H-beams are used for heavy machinery components such as hydraulic supports and transmission shafts.

4. Processing services: Support surface polishing, cutting to length, and customized special-shaped pipes to meet special engineering needs.

5. Certification and Trade Requirements

EU certification: Must comply with CE certification and EN10025 standards. Some manufacturers optimize their production processes through environmentally friendly processes such as LIFE H2Reuse;

Export specifications: The product must indicate the material grade, implementation standard (such as EN10025-2:2004), and mechanical performance testing report.

The above information integrates the technical specifications, market applications, and supply chain dynamics of EN10025 hot-rolled seamless steel pipes, with reference sources covering standard interpretation, manufacturer products, and trade policies.