DIPTI METAL INDUSTRIES
Dipti Metal Industries is a Leading global EN 1092-1 Flange Manufacturer, EN 1092-1 PN 250 Flanges Supplier & EN 1092-1 PN 250 Flanges Exporter of flanges conforming to the European Standard EN 1092-1 in the PN 250 pressure rating (25.0 MPa / ~3626 PSI). PN 250 is a critical high-pressure rating, roughly comparable to ASME Class 1500, and is essential for severe steam headers, high-pressure utility lines, and demanding process applications. We supply key flange types, including Type 05 Blind, Type 11 Weld Neck, and Type 21 Integral flanges, in a comprehensive size range from DN10 up to DN300. We ensure material traceability and dimensional compliance for seamless integration into European and global piping networks. Our materials are sourced from the EN 10222 forging standard, guaranteeing certified performance.
Founded in 2009 in Mumbai, India, we are a global EN 1092-1 Flange Manufacturer and PN 250 Flange Exporter specializing in certified high-pressure flanges for international markets. Our manufacturing process guarantees that our PN 250 flanges adhere strictly to the dimensions, facing, and tolerances specified in the EN 1092-1 standard. We focus on efficiently supplying projects requiring large quantities of PN 250 flanges, covering the full DN range and ensuring all forgings are procured and certified to the comprehensive EN 10222 material specification.
The EN 1092-1 standard is the primary specification for circular steel flanges for piping in Europe. PN 250 (Nominal Pressure 250 Bar) is a critical high-pressure rating, comparable to ASME Class 1500, making it essential for sectors like power generation (high-pressure superheated steam), petrochemical processing, and critical high-pressure applications. The standard specifies very robust, heavy-duty dimensions and precise bolting to handle extreme pressure and temperature loads.
| Parameter | Specification |
|---|---|
| Design Standard | EN 1092-1:2018 |
| Nominal Pressure (PN) | PN 250 |
| Max Working Pressure | 25.0 MPa / 250 Bar / ~3626 PSI |
| Flange Face | Type B2 (Raised Face - Tongue & Groove) is common, but Types A and B1 are specified. |
| Common Flange Types | Type 05 (Blind), Type 11 (Weld Neck), Type 21 (Integral) |
PN 250 flanges require materials with enhanced strength and creep resistance, typically from EN 10222-2 (Creep) or EN 10222-5 (Stainless).
| Forging Standard | Material Categories |
|---|---|
| EN 10222-2 | Creep-Resistant Steels (e.g., P250GH, 16Mo3) |
| EN 10222-3 | Low-Temperature Steels (e.g., 12Ni14, X8Ni9) |
| EN 10222-4 | High-Yield Steels (e.g., P355NH, P285QH) |
| EN 10222-5 | Stainless & Duplex Steels (e.g., 1.4404, 1.4462) |
Materials are supplied with EN 10204 3.1 for use in pressure equipment (PED).
This comprehensive list details the various EN 10222 grades we supply and manufacture into PN 250 Flanges and other pressure components. All are sourced with certified EN 10204 3.1 documents.
| Material Name | Standard | Material Number | EN 10222 Part / Category |
|---|---|---|---|
| EN 10222-2: Creep-Resistant & High-Temp Steels | |||
| P250GH | EN 10222-2 | 1.0460 | General Pressure / High-Temp |
| P245GH | EN 10222-2 | 1.0352 | General Pressure / High-Temp |
| P280GH | EN 10222-2 | 1.0426 | General Pressure / High-Temp |
| 16Mo3 | EN 10222-2 | 1.5415 | Creep-Resistant / Mo Alloy |
| 13CrMo4-5 | EN 10222-2 | 1.7335 | Creep-Resistant / Cr-Mo Alloy |
| 11CrMo9-10 | EN 10222-2 | 1.7383 | Creep-Resistant / Cr-Mo Alloy |
| X16CrMo5-1+NT | EN 10222-2 | 1.7366 | Creep-Resistant / High Alloy |
| X20CrMoV11-1 | EN 10222-2 | 1.4922 | Creep-Resistant / High Alloy |
| X10CrMoVNb9-1 | EN 10222-2 | 1.4903 | Creep-Resistant / High Alloy (Grade 91) |
| EN 10222-3: Low-Temperature (Cryogenic) Steels | |||
| 15NiMn6 | EN 10222-3 | 1.6228 | Low-Temp / Fine Grain Steel |
| 13MnNi6-3 | EN 10222-3 | 1.6217 | Low-Temp / Fine Grain Steel |
| 12Ni14 | EN 10222-3 | 1.5637 | Low-Temp / 3.5% Nickel Steel |
| X12Ni5 | EN 10222-3 | 1.5680 | Low-Temp / 5% Nickel Steel |
| X8Ni9 | EN 10222-3 | 1.5662 | Low-Temp / 9% Nickel Steel (Cryogenic) |
| EN 10222-4: High-Yield Steels | |||
| P285NH | EN 10222-4 | 1.0477 | High-Yield / Normalized |
| P285QH | EN 10222-4 | 1.0478 | High-Yield / Quenched |
| P355NH | EN 10222-4 | 1.0565 | High-Yield / Normalized |
| P355QH1 | EN 10222-4 | 1.0571 | High-Yield / Quenched |
| EN 10222-5: Stainless & Duplex Steels | |||
| X2CrNi18-9 | EN 10222-5 | 1.4307 | Austenitic (304L Equivalent) |
| X2CrNiN18-10 | EN 10222-5 | 1.4311 | Austenitic (304N Equivalent) |
| X5CrNi18-10 | EN 10222-5 | 1.4301 | Austenitic (304 Equivalent) |
| X6CrNi18-10 | EN 10222-5 | 1.4948 | Austenitic (304H Equivalent) |
| X6CrNiTi18-10 | EN 10222-5 | 1.4541 | Austenitic (321 Equivalent) |
| X6CrNiNb18-10 | EN 10222-5 | 1.4550 | Austenitic (347 Equivalent) |
| X6CrNiTiB18-10 | EN 10222-5 | 1.4941 | Austenitic (Stabilized) |
| X2CrNiMo17-12-2 | EN 10222-5 | 1.4404 | Austenitic (316L Equivalent) |
| X2CrNiMo17-12-3 | EN 10222-5 | 1.4432 | Austenitic (316L High Mo) |
| X2CrNiMo18-14-3 | EN 10222-5 | 1.4435 | Austenitic (316L High Mo/Ni) |
| X2CrNiMoN17-11-2 | EN 10222-5 | 1.4406 | Austenitic (316LN Equivalent) |
| X2CrNiMoN17-13-3 | EN 10222-5 | 1.4429 | Austenitic (316LN High Mo) |
| X5CrNiMo17-12-2 | EN 10222-5 | 1.4401 | Austenitic (316 Equivalent) |
| X3CrNiMo17-13-3 | EN 10222-5 | 1.4436 | Austenitic (316 High Mo) |
| X6CrNiMoTi17-12-2 | EN 10222-5 | 1.4571 | Austenitic (316Ti Equivalent) |
| X2CrNiMoN22-5-3 | EN 10222-5 | 1.4462 | Duplex (2205 Equivalent) |
| X2CrNiMoN25-7-4 | EN 10222-5 | 1.4410 | Super Duplex (2507 Equivalent) |
The following table outlines the essential mating dimensions (in mm) for EN 1092-1 PN 250 Flanges, including the Outside Diameter (D), Bolt Circle Diameter (K), and Bolting details, critical for interchangeable assembly of Type 05, 11, and 21 flanges.
| DN | D (Outside Dia) | K (Bolt Circle Dia) | L (Bolt Hole Dia) | Bolting (Size) | N (Number of Bolts) |
|---|---|---|---|---|---|
| 10 | 125 | 85 | 18 | M16 | 4 |
| 15 | 130 | 90 | 18 | M16 | 4 |
| 20 | 150 | 105 | 22 | M20 | 4 |
| 25 | 160 | 115 | 26 | M24 | 4 |
| 40 | 185 | 135 | 26 | M24 | 4 |
| 50 | 200 | 150 | 26 | M24 | 8 |
| 65 | 230 | 180 | 26 | M24 | 8 |
| 80 | 255 | 200 | 30 | M27 | 8 |
| 100 | 300 | 235 | 33 | M30 | 8 |
| 125 | 340 | 275 | 33 | M30 | 12 |
| 150 | 390 | 320 | 36 | M33 | 12 |
| 200 | 485 | 400 | 42 | M39 | 12 |
| 250 | 585 | 490 | 48 | M45 | 16 |
| 300 | 690 | 590 | 52 | M48 | 16 |
UNIT: mm. Data extracted from EN 1092-1 Table 19, focusing on the PN 250 Mating Dimensions (D, K, L, N, Size).
Dimensions apply across applicable flange types (05, 11, 21) for PN 250.
We manufacture the primary flange types mandated by EN 1092-1 in the PN 250 pressure class, utilizing certified EN 10222 forging grades to ensure full interoperability for high-pressure European systems.
The PN 250 class is used exclusively for the most critical high-pressure industrial and power generation applications where maximum reliability is paramount.
As a global EN 1092-1 Flange Exporter and Supplier, Dipti Metal Industries efficiently services European and international projects requiring large volumes of PN 250 flanges for demanding industrial installations.
Contact Dipti Metal Industries today for certified EN 1092-1 PN 250 Flanges of all types (05, 11, 21, etc.). Provide your required Flange Type, Nominal Size (DN), and Material (e.g., P250GH or 1.4404) for a competitive, customized quote and expert technical support.
Company
Dipti Metal Industries
Address
No.9, Shreepati Castle, D-1, 10–11th Khetwadi Back Road, Mumbai – 400004, Maharashtra, India
Phone +91-22-66381301 • +91-9975266499 (WhatsApp)
Email
info@diptimetal.com
•
diptimetal@gmail.com
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