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EN10216-2 P235GH Carbon Steel Seamless U Bend Tube For Heat Exchanger
The EN 10216-2 P235GH tube refers to a European standard for seamless steel tubes used in pressure purposes. Specifically, it is designed for high-temperature applications, such as power generation, oil and gas refining, and chemical industries. The "P" stands for "Pressure" and "235" represents the minimum yield strength in megapascals (MPa). The "GH" indicates that it is suitable for elevated temperatures.
P235GH Chemical Composition
| C | ≤0.16 |
| Si | ≤0.35 |
| Mn | 0.60 to 1.20 |
| P | 0.025 |
| S | 0.015 |
| Al | ≤0.020 |
| N | ≤0.012 |
| Cr | ≤0.30 |
| Cu | ≤0.30 |
| Mo | ≤0.08 |
| Nb | ≤0.020 |
| Ni | ≤0.30 |
| Ti | 0.03 |
| Vi | ≤0.02 |
P235GH Mechanical Properties
| Grade | Tensile strength Rm | Yield strength YS | Enlongation A(％) |
| P235GH | 350 - 480 MPa at 20 °C | 185 - 235 MPa at 20 °C | >24 |
Dimensions tolerances of EN 10216-2
Tolerances on outside diameter and wall thicknes
| Outside Diameter D mm | Tolerances on D | Tolerances on T for a T/D ratio | |||
| ≤ 0,025 | > 0,025 ≤ 0,050 | > 0,050 ≤ 0,10 | > 0,10 | ||
| D ≤ 219,1 | ± 1% or ± 0.5mm whichever is the greater | ± 12,5% or ± 0.4mm whichever is the greater | |||
| D > 219,1 | ± 20% | ± 15% | ± 12,5% | ± 10% a | |
| a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T | |||||
Physical Properties
The min yield strength of P235gh is 235 MPa, with a min tensile strength of 360 to 480 MPa. The P265gh grade has a min yield strength of 265 MPa and a min tensile strength of 410 to 530 MPa.
1️⃣ High Temperature Resistance: It is specifically designed to withstand high temperatures and pressures, making it suitable for applications where elevated temperatures are involved.
2️⃣ Excellent Mechanical Properties: The tube has good properties in terms of strength, toughness, and durability, ensuring its ability to withstand demanding operating conditions.
3️⃣ Seamless Construction: Being a seamless tube, it doesn't have any welds or joints, which enhances its reliability and reduces the risk of leaks or failures.
4️⃣ Wide Range of Applications: The P235GH tube is versatile and commonly used in power plants, petrochemical plants, refineries, boilers, and heat exchangers, thanks to its suitability for various pressure purposes.
5️⃣ Conforms to European Standards: It adheres to the European standard EN 10216-2, ensuring that it meets the required quality, safety, and performance standards.
Application:
1️⃣ Power Generation: It is widely used in power plants for the construction of steam boilers, heat exchangers, and piping systems. The tube's high-temperature resistance and reliable performance make it suitable for generating steam and transferring heat efficiently.
2️⃣ Petrochemical Industry: The P235GH tube is employed in petrochemical plants for processes such as refining, distillation, and chemical reactions. Its ability to withstand high pressures and temperatures makes it a preferred choice for critical applications.
3️⃣ Refineries: Refineries utilize the P235GH tube in various equipment such as crude oil heaters, columns, and pressure vessels. Its excellent mechanical properties and resistance to corrosion help ensure the safe and efficient processing of petroleum products.
4️⃣ Boiler Systems: The tube is commonly used in the construction of industrial boilers, including those used in power generation, chemical plants, and manufacturing industries. Its seamless construction and ability to handle high pressures make it suitable for boiler applications.
