What is EN1092-1?
EN1092-1 is the European standard that specifies circular steel flanges used in piping systems. It defines flange dimensions, pressure ratings, facing types, materials, and technical requirements to ensure compatibility and safety in industrial applications.
EN1092-1 flanges are widely used throughout Europe and many international markets in industries such as water treatment, oil and gas, petrochemical, power generation, shipbuilding, and general industrial piping systems.
EN1092-1 Flange Types
The standard covers several flange designs, including:
Type 01 – Plate Flange
A flat flange commonly used in low-pressure piping systems. It is economical and easy to install.
Type 11 – Welding Neck Flange
Designed with a tapered hub and butt-weld connection. This type provides excellent strength and is suitable for high-pressure and high-temperature applications.
Type 02 – Loose Plate Flange
Used together with a stub end, allowing easier alignment during installation.
Type 05 – Blind Flange
Used to close the end of a pipeline, pressure vessel, or equipment opening.
Type 12 – Hubbed Slip-On Flange
Provides a balance between strength and ease of installation.
Type 13 – Threaded Flange
Suitable for systems where welding is not preferred.
Pressure Ratings
EN1092-1 flanges are available in various pressure classes, including: PN2.5~ PN400
The PN (Pressure Nominal) designation indicates the maximum allowable working pressure under specified conditions.
Common Materials
EN1092-1 flanges can be manufactured from a variety of materials, including:
Carbon Steel
Stainless Steel
Duplex Stainless Steel
Super Duplex grades
Material selection depends on pressure, temperature, corrosion resistance, and service conditions.
Applications of EN1092-1 Flanges
EN1092-1 flanges are commonly used in:
Their standardized dimensions ensure interchangeability and compatibility across different manufacturers and projects.
A qualified flange manufacturer should provide complete inspection reports, material certificates, and strict quality control throughout production.
EN1092-1 Flange Manufacturer in China
Hebei Yu Jinduo specializes in the production of EN1092-1 flanges in carbon steel, stainless steel, and duplex stainless steel materials. Our products are manufactured according to international standards and supplied to customers in Europe, Southeast Asia, the Middle East, and other global markets.
We offer welding neck flanges, plate flanges, blind flanges, slip-on flanges, and customized flange solutions with full material certification and quality documentation.
For technical support, drawings, or quotations, please contact our sales team.
Hebei YuanJida Group is China flange manufacturer. We mainly produce blind/blank flange, palte flange,puddle flange,slip on flange,pipe flange,steel flange,weld neck flange,thread flange,loose flange and any flange types we could supply it.[ Read More >>]
