EN 39 S235GT Scaffolding Steel Pipe: Loose Welded Steel Tubes for Tube and Coupler Scaffolds
Material
EN 39 S235GT scaffolding steel pipes are primarily made from low carbon steel, specifically designed for use in scaffolding applications. The material is chosen for its strength, ductility, and weldability, making it suitable for various construction environments.
Specification
The EN 39 standard outlines the specifications for steel tubes used in scaffolding. S235GT is a grade that indicates the minimum yield strength of 235 MPa, ensuring that the pipes can withstand significant loads during construction.
Key Features
- High Strength: Designed to support heavy loads.
- Weldability: Suitable for loose welded connections.
- Corrosion Resistance: Often treated to resist rust and degradation.
- Versatility: Compatible with various scaffolding systems, particularly tube and coupler scaffolds.
Chemical Composition
| Element | Composition (%) |
| Carbon (C) | ≤ 0.20 |
| Manganese (Mn) | 0.60 - 0.90 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.045 |
| Silicon (Si) | ≤ 0.40 |
| Iron (Fe) | Balance |
Mechanical Properties
| Property | Value |
| Yield Strength (MPa) | ≥ 235 |
| Tensile Strength (MPa) | 360 - 510 |
| Elongation (%) | ≥ 20 |
| Hardness (Brinell) | ≤ 160 |
Steel Grade
The steel grade S235GT is classified under the EN 10025 standard, which specifies hot-rolled products of structural steels. It is widely used in construction and scaffolding applications due to its favorable mechanical properties.
Application
EN 39 S235GT scaffolding steel pipes are primarily used in:
- Construction sites for temporary structures.
- Support systems for buildings and bridges.
- Industrial maintenance and repair scaffolding.
Possible Alternative Grades
While S235GT is a popular choice, other grades can be considered based on specific requirements:
- S275: Offers higher yield strength (≥ 275 MPa).
- S355: Provides even greater strength and is suitable for more demanding applications.
- EN 10219: A standard for cold-formed welded and non-welded structural hollow sections.
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