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EN1092 Flanges: Standards, Parameters, Materials, and Industrial Applications
Overview of EN1092 Flanges
EN1092 Flanges are steel flanges manufactured in accordance with the European standard EN1092-1. They are widely used for connecting pipes, valves, pumps, and pressure equipment in industrial piping systems. The standard defines flange dimensions, pressure ratings, sealing surfaces, and material requirements, ensuring safety, interchangeability, and reliability.
Manufacturer Capability and Quality Assurance
Jiangyin Zhonghai Precision Machinery Co., Ltd. is an ISO 9001–certified manufacturer with PED, TUV, and TS qualifications. The company specializes in precision flanges and forgings produced according to EN, DIN, ASME, ASTM, JIS, and GB standards.
- Size range: 1/2'' to 60''
- Maximum single-piece weight: up to 10 tons
- Maximum dimension: up to 4 meters
- Manufacturing mode: standard production and fully customized, drawing-based manufacturing
- In-house processes: forging, heating, CNC turning, drilling, and inspection
EN1092 Flange Types and Pressure Ratings
Common EN1092-1 Flange Types
- Type 01 – Plate Flange
- Type 11 – Welding Neck Flange
- Type 12 – Slip On Flange
- Type 05 – Blind Flange
Pressure Rating Parameters
- PN6
- PN10
- PN16
- PN25
- PN40
- PN63
- PN100
Key Dimensions and Technical Parameters of EN1092 Flanges
Main Dimensional Parameters
- Nominal Diameter (DN)
- Outside Diameter
- Flange Thickness
- Bolt Circle Diameter
- Number of Bolt Holes
- Bolt Hole Diameter
- Sealing Face Type: FF, RF, RTJ
Typical EN1092 PN16 Welding Neck Flange Dimensions
| DN | Outside Diameter (mm) | Thickness (mm) | Bolt Holes | Bolt Size |
| 25 | 115 | 14 | 4 | M12 |
| 50 | 165 | 18 | 4 | M16 |
| 100 | 220 | 20 | 8 | M16 |
| 150 | 285 | 22 | 8 | M20 |
Materials and Mechanical Performance of EN1092 Flanges
Common Material Options
- Carbon Steel
- Alloy Steel
- Stainless Steel
Key Mechanical Properties
- Tensile strength
- Yield strength
- Elongation
- Impact resistance
With complete forging and heat treatment facilities, Jiangyin Zhonghai Precision Machinery Co., Ltd. ensures stable mechanical performance and material traceability for EN1092 Flanges used in high-pressure and high-temperature environments.
Applications and Selection Criteria for EN1092 Flanges
Main Industrial Applications
- Oil and gas pipelines
- Petrochemical plants
- Power generation systems
- Shipbuilding and offshore engineering
- Industrial water and HVAC systems
Selection Parameters
- Nominal diameter and pressure rating
- Operating temperature
- Medium type
- Connection method
- Sealing surface requirement
Customized Manufacturing and Quality Control
Customized EN1092 Flange Production
Jiangyin Zhonghai Precision Machinery Co., Ltd. supports fully customized EN1092 Flanges based on customer drawings, including non-standard dimensions, special materials, and strict tolerance requirements.
Quality Control Process
- Raw material inspection
- Forging process control
- Heat treatment monitoring
- CNC machining accuracy control
- Dimensional and visual inspection
- Final inspection and marking
FAQ
What is the difference between EN1092 and ASME flanges?
EN1092 Flanges use the PN pressure rating system and metric dimensions, while ASME flanges follow the Class rating system and inch-based dimensions. They are not directly interchangeable unless dimensions and bolt patterns are carefully verified.
What pressure ratings are most commonly used for EN1092 Flanges?
The most commonly used pressure ratings are PN10, PN16, and PN25, which are widely applied in water supply, industrial pipelines, and general engineering projects. Higher ratings such as PN40 and PN63 are used for high-pressure systems.
Which materials are suitable for high-temperature EN1092 Flanges?
For high-temperature applications, alloy steel and stainless steel materials are commonly selected due to their superior mechanical strength and thermal stability. Material selection should be based on operating temperature, pressure, and medium.
Can EN1092 Flanges be customized for non-standard applications?
Yes. EN1092 Flanges can be customized in terms of size, thickness, sealing face, and material. Jiangyin Zhonghai Precision Machinery Co., Ltd. provides drawing-based manufacturing for both standard and non-standard projects.
How do I choose the correct sealing face for EN1092 Flanges?
Flat Face is typically used for low-pressure systems, Raised Face is suitable for general industrial applications, and Ring Type Joint is recommended for high-pressure and critical sealing conditions. The choice depends on pressure rating, medium, and gasket type.
