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Hot Finished Structural Hollow Sections EN 10210-1:2023 & EN 10210-2:2023 from China Suppliers and Factory
Ordering Information
When ordering, the following must be specified:
- Standard designation (EN 10210-1 & EN 10210-2)
- Type of hollow section (shape and dimensions)
- Steel grade (e.g., S235JRH, S355J2H, etc.)
- Delivery condition (usually "hot-finished")
- Quantity (length, number of pieces, or weight)
- Any additional testing or inspection requirements
Main Steel Grades
The standard covers non-alloy steels (S235, S275, S355) and fine-grain steels (S275NH, S355NH, S420NH, etc.) with specified impact energy requirements. Common grades include:
- S235JRH
- S275J0H / S275J2H
- S355J0H / S355J2H / S355K2H
- S275NH / S355NH / S420NH (for low-temperature applications)
Chemical Composition & Mechanical Properties
- Chemical composition limits for carbon (C), manganese (Mn), phosphorus (P), sulfur (S), etc.
- Mechanical properties (yield strength, tensile strength, elongation, impact energy at specified temperatures).
Inspection & Testing Requirements
- Visual inspection for surface defects.
- Dimensional checks (tolerances as per EN 10210-2).
- Mechanical tests (tensile, impact, hardness if required).
- Non-destructive testing (NDT) if specified (ultrasonic, eddy current, etc.).
- Certification: Manufacturer must provide an Inspection Certificate (3.1 or 3.2 as per EN 10204).
Marking & Protection
Each hollow section must be marked with:
- Manufacturer's name/trademark
- Steel grade
- Heat number
- Dimensions
Surface protection (e.g., oiling, temporary corrosion protection) may be applied.
Tolerances (EN 10210-2)
- Dimensional tolerances (outer dimensions, wall thickness, straightness, squareness).
- Mass tolerances (deviation from theoretical weight).
📋 Conclusion
EN 10210 provides comprehensive specifications for hot-finished structural steel hollow sections, ensuring quality in chemical composition, mechanical properties, and dimensional tolerances. It is widely used in construction, bridges, and other load-bearing structures.
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❓ Frequently Asked Questions (FAQ)
Q
What is EN 10210 and what does it cover?
EN 10210 is a European standard that specifies requirements for hot-finished structural steel hollow sections. It consists of two parts: EN 10210-1 covering technical delivery conditions (material properties, chemical composition) and EN 10210-2 covering tolerances, dimensions, and sectional properties.
Q
What steel grades are available under EN 10210?
EN 10210 covers a range of non-alloy and fine-grain structural steels including S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H, S275NH, S355NH, and S420NH. The "H" suffix denotes hollow section, and grades with "N" are suitable for low-temperature applications.
Q
What information is required when placing an order for EN 10210 hollow sections?
When ordering, you must specify the standard designation (EN 10210-1 & EN 10210-2), the type and dimensions of the hollow section, the steel grade, delivery condition, required quantity, and any additional testing or inspection requirements.
Q
What types of inspection and testing are required for EN 10210 products?
Products under EN 10210 are subject to visual inspection for surface defects, dimensional checks per EN 10210-2, mechanical tests (tensile, impact, hardness), and non-destructive testing (NDT) such as ultrasonic or eddy current testing if specified. An Inspection Certificate (3.1 or 3.2 per EN 10204) must be provided by the manufacturer.
Q
What markings are required on EN 10210 hollow sections?
Each hollow section must be marked with the manufacturer's name or trademark, the steel grade, the heat number, and the section dimensions. Surface protection such as oiling or temporary corrosion protection may also be applied.
Q
Where are EN 10210 hot-finished structural hollow sections commonly used?
EN 10210 hot-finished structural hollow sections are widely used in construction, civil engineering, bridges, and other load-bearing structures. Their consistent mechanical properties and dimensional accuracy make them ideal for demanding structural applications.