EN 1092-1 Type 01 Plate Flange Flat Face ASTM A182 F316L / 1.4404 Stainless Steel Flange
EN1092-1 Type 01A Flat Faced Plate Flange F316L / 1.4404 Stainless Steel Flange
EN 1092-1 Type 01 Plate Flange Flat Face ASTM A182 F316L / 1.4404 Stainless Steel Flange” describes a circular steel plate flange made to the European standard EN 1092-1, flange type 01 (plate flange), with a flat face (FF) gasket contact surface, manufactured from low-carbon austenitic stainless steel 316L, specified by ASTM A182 F316L and its European equivalent EN 1.4404 / X2CrNiMo17-12-2. It is used for bolted pipe, valve, pump, and equipment connections.
When to choose a specific EN 1092-1 flange type
-
Type 01 – Plate flange:
Low pressure, low cost, slip-on welding, flat face (FF). Good for water, low-pressure utilities, non-critical service. -
Type 11 – Welding neck flange:
High pressure, high temperature, cyclic loading, critical service. Better strength and fatigue resistance. -
Type 05 – Blind flange:
For blanking off pipe ends, valves, or vessel openings. -
Other types: Loose plate, lapped pipe end, threaded, etc., depending on connection and service
| Scenario | Recommendation |
|---|---|
| Project in Europe, Asia, or spec calls for PN | Use EN 1092-1 |
| Project in North America, or spec calls for Class | Use ASME B16.5 / B16.47 |
| Connecting to existing flanges | Must match the standard – do not mix EN and ASME directly |
| International oil & gas (offshore) | Often ASME, but some European operators accept EN with PN/Class conversion |
|
* Never directly bolt an EN 1092-1 flange to an ASME B16.5 flange. Bolt circle diameters, hole sizes, and facing dimensions are different. Use a proper adapter flange or a custom-made transition piece designed to both standards. |
|
Equivalent Materials of EN 1092-1 Type 01 Plate Flange FF ASTM A182 F316L / 1.4404 Stainless Steel Flange
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 316L | 1.4404 | S31603 | SUS 316L | 316S11 | 03Ch17N14M3 | Z3CND17‐11‐02 | X2CrNiMo17-12-2 |
Chemical Composition % of EN 1092-1 Type 01 Plate Flange FF ASTM A182 F316L / 1.4404 Stainless Steel Flange
| SS | UNS | C | MN | P | S | SI | CR | NI | MO | NB | TI |
| 316L | S31603 | 0.030 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-15.0 | 2.0-3.0 | --- | --- |
Note: ASTM A182 F316L and EN 1.4404 are considered equivalent and are often dual-certified. However, their exact chemical ranges can differ slightly, so the governing standard should be specified if strict compliance is required.
Application
-
Chemical and petrochemical piping
-
Food and beverage processing
-
Water treatment and desalination
-
Marine and offshore piping
-
Oil and gas low-to-medium pressure systems
-
Heat exchangers, pumps, valves, and tanks
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.