EN 1123-1 S235JR Hot Dip Galvanized Tube Welded Steel Tube for Sewer Pipes
Material
The EN 1123-1 S235JR hot dip galvanized tube is a type of welded steel tube specifically designed for sewer applications. The S235JR grade indicates a structural steel with a minimum yield strength of 235 MPa, making it suitable for various construction and engineering applications.
Specification
The specification for EN 1123-1 outlines the requirements for hot dip galvanized welded steel tubes used in sewer systems. These tubes are designed to withstand harsh environmental conditions and provide long-lasting durability.
Key Features
- Corrosion Resistance: The hot dip galvanization process provides a protective zinc coating that enhances the tube's resistance to corrosion.
- High Strength: With a minimum yield strength of 235 MPa, S235JR tubes offer excellent structural integrity.
- Weldability: The material is designed for easy welding, making it suitable for various construction methods.
- Versatility: Ideal for sewer pipes, but can also be used in other applications such as water supply and drainage systems.
Chemical Composition
| Element | Percentage (%) |
| Carbon (C) | 0.17 max |
| Manganese (Mn) | 1.40 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.045 max |
| Silicon (Si) | 0.40 max |
| Iron (Fe) | Balance |
Mechanical Properties
| Property | Value |
| Yield Strength (MPa) | 235 |
| Tensile Strength (MPa) | 360 - 510 |
| Elongation (%) | 20 min |
| Hardness (HB) | 120 max |
Steel Grade
The S235JR steel grade is part of the European standard EN 10025, which specifies hot-rolled products of structural steels. It is widely used in construction and engineering due to its favorable mechanical properties.
Application
The EN 1123-1 S235JR hot dip galvanized tube is primarily used in sewer systems, but its applications extend to:
- Water supply systems
- Drainage systems
- Structural applications in construction
- Agricultural piping systems
Possible Alternative Grades
While S235JR is a popular choice, there are alternative grades that may be considered based on specific requirements:
- S235J0: Similar to S235JR but with improved impact resistance at lower temperatures.
- S275JR: Offers a higher yield strength (275 MPa) for applications requiring greater load-bearing capacity.
- S355JR: Provides even higher strength (355 MPa) and is suitable for more demanding structural applications.
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