What is EN 10216-2 P265GH U-Bend Tube?
· EN 10216-2: European standard for seamless carbon steel tubes for pressure applications with specified elevated temperature properties.
· P265GH: Carbon steel grade with good weldability and suitable for high-temperature pressure applications (yield strength ≥ 265 MPa).
· U-Bend Tube: A tube bent into a U shape, commonly used in compact heat exchanger and boiler designs to allow directional changes without welds.
Why Use U-Bend Tubes?
· Compact design: Saves space by reversing flow direction within small areas.
· No welded joints: Maintains structural integrity under pressure and thermal cycling.
· Good thermal expansion accommodation: The bend helps absorb expansion and contraction during operation.
· Cost-effective installation and maintenance in boiler and heat exchanger systems.
Summary Table of EN 10216-2 P265GH U-Bend Seamless Tube
| Property | Detail |
|---|---|
| Standard | EN 10216-2 |
| Grade | P265GH |
| Form | Seamless, U-bend bent tube |
| Material Type | Carbon Steel |
| Heat Treatment | Normalized or normalized & tempered |
| Operating Temp | Up to ~450°C |
| Applications | Boiler coils, heat exchangers, pressure piping |
Chemical Composition of EN 10216-2 P265GH
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | — | 0.22 |
| Manganese (Mn) | 0.60 | 1.30 |
| Silicon (Si) | — | 0.40 |
| Phosphorus (P) | — | 0.025 |
| Sulfur (S) | — | 0.015 |
| Copper (Cu) | — | 0.30 |
| Nickel (Ni) | — | 0.30 |
| Chromium (Cr) | — | 0.30 |
| Molybdenum (Mo) | — | 0.08 |
| Vanadium (V) | — | 0.05 |
Mechanical Properties of EN 10216-2 P265GH
| Property | Value | Test Condition |
|---|---|---|
| Yield Strength (Rp0.2) | ≥ 265 MPa | Tensile test |
| Tensile Strength (Rm) | 410 – 560 MPa | Tensile test |
| Elongation (A) | ≥ 22% | Tensile test |
| Impact Energy (Charpy V-notch) | ≥ 27 J @ 20°C | Impact test (if required) |
Typical Applications of EN 10216-2 P265GH U-bend Tube
· Boiler tubes: U-bend tubes form part of superheater, reheater, or economizer coils.
· Heat exchangers: U-bends provide compact coil arrangements improving heat transfer efficiency.
· Pressure vessels and piping systems: Especially where directional changes of tubes are needed without welding joints.
· Power plants, petrochemical plants, and industrial heating systems.
