EN 1092-1 Type 11 Flanges, commonly referred to as weld neck flanges, are crafted from materials like carbon steel (such as P245GH), stainless steel (like 1.4301/1.4571), and alloy steels. Their composition features carbon, manganese, silicon, chromium, nickel, and molybdenum, which work together to boost strength and resistance to corrosion. These flanges showcase impressive tensile strength ranging from 450 to 700 MPa, yield strength around 240 to 400 MPa, and elongation between 20 to 30%. Tailored for high-pressure and high-temperature applications, they offer exceptional weldability, structural integrity, and a long service life in challenging industrial environments.
EN 1092-1 Type 11 Flanges find extensive use in critical piping systems that function under high pressure and temperature. Common applications include oil & gas pipelines, petrochemical processing, power plants, marine systems, and high-pressure steam lines. The long tapered hub of the weld neck flange ensures smooth stress distribution and reduces the likelihood of failure under load, making it perfect for demanding service conditions. These flanges are favored for their strength, reliability, and capacity to handle thermal expansion and mechanical stresses, ensuring leak-proof, long-lasting performance in rigorous industrial operations.
| Size | (1/2″) To (48″) |
|---|---|
| Pressure | PN6, PN10, PN16, PN25, PN40, PN64, PN100, PN160 |
| Size Of Bore Diameter Flange | NPS ≤ 10 |
| Standard Dimensions | EN-1092, ASME B16.48, API605, BS4504, EN1092, UNI, ISO, API7S-43, ANSI/ASME B16.5, API7S-15, MSS S44, IS 2062, ASME B16.36, DIN, AWWA C207, B16.47 Series A & B, BS1560-3.1, ISO70051, API. |
| Minimum Pressure | 150# To 2500# |
| Flange Face Type Manufacturer | Raised Face, Groove And Small Tongue Groove, RTJ, Flat Face, Large Tongue & Large Male-Female And Small Male-Female, Lap-Joint Face. |
| Top Six Type Of Flange | Threaded Flange, Lap Joint Flange, Socket-Weld Flange, Blind Flange, Slip-On Flange, Weld Neck Flange |
| Standard Materials | Duplex Steel & Super Duplex Steel, Copper Nickel, Inconel, Mild Steel, Stainless Steel, Hastelloy, Alloy Steel, Carbon Steel. |
| Thickness Length | NPS ≤ 18 |
| Manufacturing Process | Forged/ Machined/ Heat Treated |
| Other Type Of Flange | Forged/ Plate/ Threaded |
| Rated Diameter | Flange | Neck | Raised face | Screws | Weight (7,85 Kg/dm3) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| d1 | k | D | b | h1 | d3 | s | r | h2 | d4 | f | d2 | Thread | Bolt holes | Kg | |
| 15 | 21,3 | 65 | 95 | 16 | 38 | 32 | 2,00 | 4 | 6 | 45 | 2 | 14 | M12 | 4 | 0,768 |
| 20 | 26,9 | 75 | 105 | 18 | 40 | 40 | 2,30 | 4 | 6 | 58 | 2 | 14 | M12 | 4 | 1,090 |
| 25 | 33,7 | 85 | 115 | 18 | 40 | 46 | 2,60 | 4 | 6 | 68 | 2 | 14 | M12 | 4 | 1,300 |
| 32 | 42,4 | 100 | 140 | 18 | 42 | 56 | 2,60 | 6 | 6 | 78 | 2 | 18 | M16 | 4 | 1,910 |
| 40 | 48,3 | 110 | 150 | 18 | 45 | 64 | 2,60 | 6 | 7 | 88 | 3 | 18 | M16 | 4 | 2,150 |
| 50 | 60,3 | 125 | 165 | 20 | 48 | 75 | 2,90 | 6 | 8 | 102 | 3 | 18 | M16 | 4 | 2,850 |
| 65 | 76,1 | 145 | 185 | 22 | 52 | 90 | 2,90 | 6 | 10 | 122 | 3 | 18 | M16 | 8 | 3,680 |
| 80 | 88,9 | 160 | 200 | 24 | 58 | 105 | 3,20 | 8 | 12 | 138 | 3 | 18 | M16 | 8 | 4,780 |
| 100 | 114,3 | 190 | 235 | 24 | 65 | 134 | 3,60 | 8 | 12 | 162 | 3 | 22 | M20 | 8 | 6,460 |
| 125 | 139,7 | 220 | 270 | 26 | 68 | 162 | 4,00 | 8 | 12 | 188 | 3 | 26 | M24 | 8 | 8,860 |
| 150 | 168,3 | 250 | 300 | 28 | 75 | 192 | 4,50 | 10 | 12 | 218 | 3 | 26 | M24 | 8 | 11,700 |
| 200 | 219,1 | 320 | 375 | 34 | 88 | 244 | 6,30 | 10 | 16 | 285 | 3 | 30 | M27 | 12 | 21,000 |
| 250 | 273,0 | 385 | 450 | 38 | 105 | 306 | 7,10 | 12 | 18 | 345 | 3 | 33 | M30 | 12 | 34,200 |
| 300 | 323,9 | 450 | 515 | 42 | 115 | 362 | 8,00 | 12 | 18 | 410 | 4 | 33 | M30 | 16 | 47,600 |
| 350 | 355,6 | 510 | 580 | 46 | 125 | 408 | 8,80 | 12 | 20 | 465 | 4 | 36 | M33 | 16 | 69,300 |
| 400 | 406,4 | 585 | 660 | 50 | 135 | 462 | 11,00 | 12 | 20 | 535 | 4 | 39 | M36 | 16 | 98,000 |
| 450 | 457,0 | 610 | 685 | 57 | 135 | 500 | 12,50 | 12 | 20 | 560 | 4 | 39 | M36 | 20 | 105,000 |
| Rated Diameter | Flange | Neck | Raised face | Screws | Weight (7,85 Kg/dm3) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| d1 | k | D | b | h1 | d3 | s | r | h2 | d4 | f | d2 | Thread | Bolt holes | Kg | |
| 200 | 219,1 | 310 | 360 | 30 | 80 | 244 | 6,3 | 10 | 16 | 278 | 3 | 26 | M24 | 12 | 17,100 |
| 250 | 273 | 370 | 425 | 32 | 88 | 298 | 7,1 | 12 | 18 | 335 | 3 | 30 | M27 | 12 | 24,300 |
| 300 | 323,9 | 430 | 485 | 34 | 92 | 352 | 8,0 | 12 | 18 | 395 | 4 | 30 | M27 | 16 | 31,800 |
| 350 | 355,6 | 490 | 555 | 38 | 100 | 398 | 8,0 | 12 | 20 | 450 | 4 | 33 | M30 | 16 | 48,800 |
| 400 | 406,4 | 550 | 620 | 40 | 110 | 452 | 8,8 | 12 | 20 | 505 | 4 | 36 | M33 | 16 | 63,300 |
| 450 | 457 | 600 | 670 | 46 | 110 | 500 | 8,8 | 12 | 20 | 550 | 4 | 36 | M33 | 20 | 76,000 |
| 500 | 508 | 660 | 730 | 48 | 125 | 558 | 10,0 | 12 | 20 | 615 | 4 | 36 | M33 | 20 | 97,000 |
| 600 | 610 | 770 | 845 | 48 | 125 | 660 | 11,0 | 12 | 20 | 720 | 5 | 39 | M36 | 20 | 121,000 |
| 700 | 711 | 875 | 960 | 50 | 129 | 760 | 14,2 | 12 | 20 | 820 | 5 | 42 | M39 | 24 | 155,000 |
EN 1092-1 Type 11 flanges are widely used in high-pressure and high-temperature applications across various industries. Commonly found in the oil and gas, petrochemical, power generation, and chemical processing sectors, these flanges are ideal for connecting pipes, valves, and equipment in demanding systems. Their robust design makes them suitable for use in pipelines, boilers, heat exchangers, and other critical infrastructure. They ensure secure, leak-resistant connections and are trusted for their strength, durability, and performance in extreme operating conditions.
Yes, we offer custom sizes for EN 1092-1 Type 11 Flanges to meet specific project needs. Our team at Harsh Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@harshflanges.co.in.
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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