PN6 to PN40 DIN Flanges
EN 1092-1 Type 11 Standard Flanges: Dimensions | Specifications | Material Grade | Standards | About EN 1092-1 | All Product Types
EN 1092-1 is the European standard for circular flanges made of steel, commonly used in pressure systems, pipelines, valves, and equipment across various industries. These flanges are designed with nominal pressure ratings from PN6 up to PN40, and are available in multiple face finishes and flange types to ensure compatibility and sealing reliability in both low- and high-pressure environments.
At Nutech, we manufacture and supply a wide range of EN 1092-1 flanges in accordance with Type 01 (weld neck), Type 05 (blind), Type 11 (slip-on), Type 13 (threaded), Type 21 & 34 (loose flanges over stub ends), and Type 36 (integral). These flange types conform to DIN and ISO designations and are available in raised face (RF), flat face (FF), and tongue & groove face options.
Our EN flanges are produced using high-quality materials such as carbon steel, stainless steel, and alloy steel, with surface finishes and dimensional tolerances that fully comply with EN 1092-1 specifications. Sizes range from DN10 to DN2000, with drilling patterns and face thickness matching the required pressure class.
Each flange is precisely machined to ensure proper fitment, and our offering includes custom bore dimensions, machined gasket faces, and protective coatings for corrosive service. Whether for water pipelines, refineries, shipbuilding, or fire protection systems, our EN 1092-1 flanges meet all performance and regulatory requirements for European and international markets.
For complete technical details, including dimensions, pressure rating classes, weight charts, sizes, tolerances, and material specifications of our EN 1092-1 Type 01 Standard Flanges, please download the full Catalog PDF below.
Specification | Details |
---|---|
Standard | EN 1092-1 (European Norm for circular flanges made from steel) |
Flange Types | Type 01 (Weld Neck), Type 05 (Blind), Type 11 (Slip-On), Type 13 (Threaded), Type 21 & 34 (Loose), Type 36 (Integral) |
Size Range | DN10 to DN2000 (½″ to 80″ nominal bore) |
Pressure Ratings | PN6, PN10, PN16, PN25, PN40 |
Face Types | Raised Face (RF), Flat Face (FF), Tongue & Groove (TG), Male & Female (M&F) |
Flange Face Finish | Stock Finish (3.2 – 6.3 μm Ra), Smooth Finish, Serrated Finish |
Drilling Template | As per EN 1092-1 drilling patterns (Bolt Circle Diameter, No. of Holes, Hole Diameter) |
Thickness Tolerance | As per EN dimensional tolerances (refer to EN 1092-1 Table 8 for tolerances) |
Coating / Protection | Transparent Varnish, Anti-Rust Coating, Hot-Dip Galvanized, Painted (on request) |
Inspection & Testing | Dimensional Check, Visual Inspection, PMI, Hydro Testing (on request) |
Certification | EN 10204 3.1 / 3.2, PED 2014/68/EU, ISO 9001:2015, CE Marking (where applicable) |
Application Industries | Water Supply, Oil & Gas, Marine, HVAC, Petrochemical, Power Generation, Fire Protection, Pulp & Paper |
Origin | Made in India (by Nutech Overseas) |
Export Network | USA, Europe, and Middle East |
Material Category | Type 13 EN 1092-1 Flange Grades |
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Stainless Steel EN 1092-1 Flange | ASTM A182 F304 / F304L / F304H, F316 / F316L / F316Ti, F310, F309S, F317 / F317L, F321 / F321H, F347 / F347H, F904L, ASTM A351 CF3 / CF3M / CF8 / CF8M / CF8C, DIN 1.4301, 1.4306, 1.4307, 1.4311, 1.4401, 1.4404, 1.4408, 1.4409, 1.4541, 1.4571, 1.4550, 1.4435, 1.4539 |
Duplex Steel EN 1092-1 Flange | ASTM A182 F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61, UNS S31803 / S32205 |
Super Duplex Steel EN 1092-1 Flange | ASTM A182 F53 / F55 / F57 / F59 / F60 / F61, UNS S32750 / S32760 |
Carbon Steel EN 1092-1 Flange | ASTM A105 / A105N, ASTM A350 LF2, ASTM A694 F52 / F56 / F60 / F65 / F70 / F80, ASTM A216 WCB, DIN 1.0460 / 1.0402 / 1.0619, Die Steel, Mild Steel |
Alloy Steel EN 1092-1 Flange | ASTM A182 F5 / F9 / F11 / F12 / F22 / F91, AISI 4130 / 4140 |
Nickel Alloy EN 1092-1 Flange | Nickel 200 / 201, ASTM B564 |
Monel EN 1092-1 Flange | Monel 400 (UNS N04400), Monel K500 (UNS N05500), ASTM B564 |
Inconel EN 1092-1 Flange | Inconel 600 / 601 / 625 / 690 / 718 / 783 / X750, ASTM B564 |
Incoloy EN 1092-1 Flange | Incoloy 800 / 800H / 800HT (UNS N08800), Incoloy 825 (UNS N08825), Incoloy 925, ASTM B564 |
Hastelloy EN 1092-1 Flange | Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X, ASTM B564 |
Alloy 20 EN 1092-1 Flange | Alloy 20 / 20Cb-3, Carpenter® 20, ASTM B462 |
254 SMO EN 1092-1 Flange | SMO 254 / 6Mo, UNS S31254, DIN 1.4547, ASTM A182 |
Copper Nickel EN 1092-1 Flange | Copper Nickel 90/10 (C70600), 70/30 (C71500), UNS C71640, ASTM B61 / B62 / B151 / B152 |
Copper EN 1092-1 Flange | TP1, TP2, T1, T2, C10100–C12300, C14200–C17200, C21000–C71520, including C10930, C11000, C11400, C12000, C12200, C26000, C28000, C33000, C44300, C70600, etc. |
Brass EN 1092-1 Flange | Grades 3602, 2604, H59, H62, etc. |
Aluminium EN 1092-1 Flange | Aluminium Grades 5052, 6061, 6063, 2017, 7075, etc. |
Titanium EN 1092-1 Flange | ASTM B381 Gr.1 / Gr.2 / Gr.4 / Gr.5 / Gr.7, UNS R50250 / R50400 / R50550 / R50700 / R52400 / R53400 / R56320 / R56400 |
Other Special Grades | Al6XN, Tin Bronze, Aluminium Bronze, Lead Bronze, Nimonic 75 / 80A / 90 |
EN 1092-1 is a European standard that defines the dimensions, tolerances, materials, and pressure classes for circular steel flanges. It is widely used across Europe, the Middle East, and Africa, and is often specified for piping systems that conform to DIN and ISO standards.
Here’s how it differs from ANSI/ASME flange systems:
Important Note: When selecting between EN 1092-1 and ASME flanges, it's essential to match the entire system — including bolts, gaskets, and mating components — to ensure safety and fit.
EN 1092-1 classifies flanges into various Type Codes, each representing a specific design configuration suited for different piping applications. These codes help buyers and engineers identify the exact flange required based on connection method, facing, and mounting technique.
Here’s a quick breakdown:
Tip for Engineers: Always refer to EN 1092-1 Table 1 for selecting the correct flange type based on the nominal size (DN), pressure rating (PN), and face finish.
In the EN 1092-1 standard, PN (Pressure Nominale) refers to the pressure rating of a flange, expressed in bars. The PN rating indicates the maximum allowable operating pressure at a reference temperature of 20°C (68°F). Unlike ASME flange classes, EN flanges follow a metric pressure system.
Common PN Ratings Include:
Important Considerations:
Note: Always consult EN 1092-1 Annex G or pressure/temperature rating charts to ensure compatibility with your piping system and operating conditions.
The face finish of an EN 1092-1 flange is crucial for ensuring a reliable, leak-proof seal between the flange and gasket. Surface roughness directly affects how the gasket compresses and seals under pressure.
Standard Face Finish Types for EN 1092-1:
Why it matters:
Always ensure flange face finish complies with EN 1092-1 Clause 6.7 to meet sealing performance expectations.
Nutech Overseas is a trusted global supplier of EN 1092-1 standard flanges, exporting to over 40 countries with full documentation and quality certifications. Our products comply with European standards and are widely used in infrastructure, oil & gas, chemical, and water treatment industries.
Key Export Destinations Include:
All flanges are supplied with EN 10204 3.1/3.2 certificates, dimensional test reports, and proper export packaging, ensuring safe delivery and international compliance.