P265GH (1.0425) EN 1092-1 Type 11 Weld Neck Flange Manufacturer & Supplier
What is P265GH EN 1092-1 Type 11 Weld Neck Flange?
The EN 1092-1 Type 11 Weld Neck Flange made from P265GH (material number 1.0425) is widely used in pressure vessel and high-temperature piping applications. P265GH is a non-alloy quality steel suitable for elevated temperature service, especially in boiler, power plant, petrochemical, and refinery systems.
The weld neck design ensures strong, leak-proof connections in pipelines, while the long tapered hub provides smooth stress distribution and reduces the risk of cracking under pressure and temperature fluctuations.
Key Features & Specification
- Standard: EN 1092-1 Type 11 (Weld Neck Flange)
- Material Grade: P265GH (1.0425)
- Pressure Ratings: PN6, PN10, PN16, PN25, PN40
- Size Range: DN10 to DN2000 (custom sizes on request)
- Facing Types: Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
- Production Method: Forged, Heat Treated, Machined
- Testing: 100% PMI, UT, Hardness, and Hydrostatic Testing
- Standards Compliance: EN 10222-2, EN 10216, EN 1092-1, PED 2014/68/EU
P265GH (1.0425) Material
P265GH (material number 1.0425) is a non-alloy quality steel grade defined in EN 10028-2, specifically designed for pressure vessels, boilers, and high-temperature piping systems. The “P” stands for pressure, while “265” indicates a minimum yield strength of 265 MPa. Due to its excellent weldability, toughness, and resistance to high-temperature environments, P265GH is widely used across the oil & gas, petrochemical, power generation, and mechanical engineering industries.
| Grade : | P265GH |
| Number: | 1.0425 |
| Classification: | Non-alloy quality steel |
| Density: | 7.85 g/cm ³ |
Chemical composition % of steel P265GH (1.0425): EN 10028-2-2003
| C | Si | Mn | Ni | P | S | Cr | Mo | V | N | Nb | Ti | Al | Cu | – |
| max 0.2 | max 0.4 | 0.8 – 1.4 | max 0.3 | max 0.025 | max 0.015 | max 0.3 | max 0.08 | max 0.02 | max 0.012 | max 0.02 | max 0.03 | max 0.02 | max 0.3 | Cr+Cu+Mo+Ni < 0.7 |
Mechanical properties of steel P265GH (1.0425)
| Nominal thickness (mm): | to 100 | 100 – 150 | 150 – 250 |
| Rm – Tensile strength (MPa) (+N) | 410-530 | 400-530 | 390-530 |
Applications of P265GH EN 1092-1 Type 11 Flanges
- Boiler & Pressure Vessel Industry
- Refineries and Petrochemical Plants
- Power Generation & Steam Pipelines
- High-Temperature Gas & Oil Transport Systems
- Process Piping in Chemical Industry
Why Choose Us as Your EN 1092-1 Flange Manufacturer?
- Professional manufacturer of P265GH (1.0425) forged weld neck flanges.
- Third-party inspection (TÜV, SGS, BV, Lloyds) available on request.
- Exporting to Europe, Middle East, South America, and Asia.
- Large inventory of PN10, PN16, PN25, PN40 flanges in ready stock.
- Custom coating options: Galvanized, Epoxy.
Related Products
- EN 1092-1 Type 11 PN16 Weld Neck Flange
- P250GH (1.0460) Weld Neck Flange
- ASTM A105 / ASME B16.5 Weld Neck Flange
- DIN 2633 PN16 Weld Neck Flange
