Weld Neck Flange Type 11/B1 EN1092-1 PN63
TECHNICAL DESCRIPTION
Neck (skirt) flanges according to standard EN1092-1 / type 11 / B1 are pipeline elements with a wide size range, which are widely used in the construction of steel pipelines and pipe segments (spools) used in industry, industry and ship repair.
We stock EN1092-1 type 11 / B1 sealing surface steel flanges, but we also have the necessary machining equipment, which allows us to offer flanges with sealing surfaces.
• sealing surface type A, B2, C, D, E, F
• non-standard sealing surfaces on request
• profile grooves for metal sealing rings (segments) type RTJ
• flanges made on request by the customer, and others.
SUPPORTED MATERIALS IN STOCK:
• Carbon steel
P250GH (1.0460) / EN 10222-2
Dimensions: DN 10 – 400
The Weld Neck Flange Type 11/B1, compliant with EN1092-1 PN63, is engineered for high-pressure industrial piping systems requiring superior strength and leak-proof performance. Its weld neck design ensures a smooth transition from pipe to flange, reducing stress concentrations and enhancing durability under extreme conditions. This flange is ideal for critical applications in oil and gas, chemical processing, and power generation industries, where reliability and safety are paramount.Constructed from high-grade materials, this flange meets rigorous European standards, guaranteeing compatibility and interoperability in diverse systems. Key features include:Pressure rating of PN63 for handling up to 63 barPrecision machining for perfect alignment and secure weldingRobust design to withstand thermal expansion and mechanical loadsCertified compliance with EN1092-1 for quality assuranceEasy installation and maintenance make this weld neck flange a cost-effective solution for long-term operational efficiency. Its corrosion-resistant properties ensure performance in harsh environments, minimizing downtime and replacement costs. Trust this flange for seamless integration into your high-pressure infrastructure, delivering unmatched performance and safety.

Materials
| No. | DETAILS | MATERIALS | STANDARD |
|---|---|---|---|
| 1 | FLANGE SHIEKOV (YUBKOV) 11/B1 EN1092-1 PN 63 | steel P250GH (1.0460) | EN 10222-2 |
| other steels - on request | |||
| P280GH / 1.0426 | EN 10222-2 | ||
| 16Mo3; 15Mo3 / 1.5415 | EN 10222-2 | ||
| other stainless steels - on request | |||
| AISI 304L (X2CrNiMo17-12-2) / 1.4404 | EN 10222-5 | ||
| AISI 316L (X2CrNiMo17-12-2) / 1.4404 | EN 10222-5 | ||
| AISI 321 (X6CrNiTi18-10) / 1.4541 | EN 10222-5 | ||
| AISI 316Ti (X6CrNiMoTi17-12-2) / 1.4571 | EN 10222-5 | ||
Features
| SPECIFICATION | |
|---|---|
| Standard | EN 1092-1 11/B1 |
| Pressure | PN 63 |
| DN | pipe Ø | flange dimensions | fastener dimensions | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | D | K | L | H2 | C2 | N1 | H3 | R | s | Sp | d1 | f1 | kg | n | M | |
| 10 | 13.5* | 100 | 70 | 14 | 45 | 20 | 28 | 6 | 4 | 2 | 2 | 40 | 2 | 1.10 | 4 | M12 |
| 17.2 | 32 | 1.09 | ||||||||||||||
| 15 | 20.0* | 105 | 75 | 14 | 45 | 20 | 32 | 6 | 4 | 2 | 2 | 45 | 2 | 1.22 | 4 | M12 |
| 21.3 | 34 | 1.20 | ||||||||||||||
| 20 | 25.0* | 130 | 90 | 18 | 48 | 22 | 42 | 8 | 4 | 2.6 | 2.6 | 58 | 2 | 2.04 | 4 | M16 |
| _26.9 | 42 | 2.02 | ||||||||||||||
| 25 | 30.0* | 140 | 100 | 18 | 58 | 24 | 48 | 8 | 4 | 2.6 | 2.6 | 68 | 2 | 2.65 | 4 | M16 |
| 33.7 | 52 | 2.63 | ||||||||||||||
| 32 | 38.0* | 155 | 110 | 22 | 60 | 24 | 58 | 8 | 6 | 2.9 | 2.9 | 78 | 2 | 3.25 | 4 | M20 |
| 42.4 | 62 | 3.20 | ||||||||||||||
| 40 | 44.5* | 170 | 125 | 22 | 62 | 26 | 65 | 10 | 6 | 2.9 | 2.9 | 88 | 3 | 4.12 | 4 | M20 |
| 48.3 | 70 | 4.07 | ||||||||||||||
| 50 | 57.0* | 180 | 135 | 22 | 62 | 26 | 78 | 10 | 6 | 2.9 | 2.9 | 102 | 3 | 4.55 | 4 | M20 |
| 60.3 | 82 | 4.51 | ||||||||||||||
| 65 | 76.1 | 205 | 160 | 22 | 68 | 26 | 98 | 12 | 6 | 3.2 | 3.2 | 122 | 3 | 5.58 | 8 | M20 |
| 80 | 88.9 | 215 | 170 | 22 | 72 | 28 | 112 | 12 | 8 | 3.6 | 3.6 | 138 | 3 | 6.68 | 8 | M20 |
| 100 | 108.0* | 250 | 200 | 26 | 78 | 30 | 132 | 12 | 8 | 4 | 4 | 162 | 3 | 9.45 | 8 | M24 |
| 114.3 | 138 | 9.27 | ||||||||||||||
| 125 | 133.0* | 295 | 240 | 30 | 88 | 34 | 162 | 12 | 8 | 4.5 | 4.5 | 188 | 3 | 14.66 | 8 | M27 |
| 139.7 | 168 | 14.50 | ||||||||||||||
| 150 | 159.0* | 345 | 280 | 33 | 95 | 36 | 192 | 12 | 10 | 5.6 | 5.6 | 218 | 3 | 21.50 | 8 | M30 |
| 168.3 | 202 | 21.40 | ||||||||||||||
| 200 | 219.1 | 415 | 345 | 36 | 110 | 42 | 256 | 16 | 10 | 7.1 | 7.1 | 285 | 3 | 34.10 | 12 | M33 |
| 250 | 273.0 | 470 | 400 | 36 | 125 | 46 | 316 | 18 | 12 | 8.8 | 8.8 | 345 | 3 | 48.30 | 12 | M33 |
| 300 | 323.9 | 530 | 460 | 36 | 140 | 52 | 372 | 18 | 12 | 11 | 11 | 410 | 4 | 67.50 | 16 | M33 |
| 350 | 355.6 | 600 | 525 | 39 | 150 | 56 | 420 | 20 | 12 | 12.5 | 12.5 | 465 | 4 | 97.80 | 16 | M36 |
| 400 | 406.4 | 670 | 585 | 42 | 160 | 60 | 475 | 20 | 12 | 14.2 | 14.2 | 535 | 4 | 129.00 | 16 | M39 |
| *) flanges with diameters not specified in standard EN 1092-1: 2013 - can be made to order | ||||||||||||||||









