Weld Neck Flange
Weld Neck Flange Supplier & Manufacturer in Tunisia, Algeria, Libya & Morocco
Emirerri Steel Tunisia is a leading manufacturer and exporter of Weld Neck flange , supplying high-quality products throughout Morocco, Algeria, Tunisia, Libya, and Egypt . Our Weld Neck Flange is designed in accordance with international standards such as EN 1092-1 and AFNOR , ensuring optimal performance in critical applications such as oil and gas, petrochemicals, power generation, water treatment, and infrastructure.
Weld Neck Flange feature a long, tapered neck that ensures excellent stress distribution, making them ideal for high-pressure, high-temperature environments. They are butt-welded to the pipes, providing a smooth transition and reducing turbulence and erosion.
Made from high-quality materials such as carbon steel, stainless steel, alloy steel, and duplex steel, our flanges offer durability, corrosion resistance, and a long service life. They are widely used in North Africa thanks to their compliance with European and French standards.
Product Specifications
| Setting | Description |
|---|---|
| Product type | Flange with collar (Type 11) |
| Standards | EN 1092-1 / AFNOR |
| Pressure classes | PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160 |
| Size range | DN10 to DN2000 |
| Types of faces | RF (Raised Face), FF (Flat Face), RTJ |
| Materials | Carbon steel, stainless steel, alloy steel, duplex |
| Manufacturing process | Wrought |
| Finishing | Rust-resistant coating, oiled, stripped and passivated |
| Inspection | TPI, non-destructive testing, hydraulic testing |
| Certification | EN 10204 3.1 / 3.2 |
AFNOR & EN Equivalency Table
Carbon Steel
| Grade EN | AFNOR grade | Description |
|---|---|---|
| P235GH | E24-2 | Steel for pressure vessels |
| P250GH | E24-2 / E26-2 | Boiler quality |
| P265GH | E28-2 | High temperature |
| P355GH | E36-2 | High resistance |
Stainless steel
| Grade EN | AFNOR grade | Equivalent |
|---|---|---|
| 1.4301 | Z5CN18-10 | 304 |
| 1.4307 | Z3CN18-10 | 304L |
| 1.4401 | Z5CND17-12 | 316 |
| 1.4404 | Z3CND17-12 | 316L |
| 1.4541 | Z6CN18-10 | 321 |
| 1.4571 | Z6CND17-12 | 316Ti |
Duplex & Alloy Steels
| Grade EN | AFNOR grade | Description |
|---|---|---|
| 1.4462 | Z2CND22-05 | Duplex steel |
| 1.7380 | 10CD9-10 | Alloy steel |
| 1.7335 | 13CrMo4-5 | High temperature |
Dimensions of the weld neck flange according to standard NF E 29-203 / NFE 29203
Dimensions of the weld-on flange NFE 29203 Type 11 PN 10
| DN | D | K | L | No. of Holes | A1 | C2 | H2 | H3 | N1 | R | S | Flat Face | Raised Face | ||
| KG | d1 | f1 | KG | ||||||||||||
| 10 | 90 | 60 | 14 | 4 | 17.2 | 14 | 35 | 6 | 28 | 3 | 1.8 | 0.65 | 40 | 2 | 0.58 |
| 15 | 95 | 65 | 14 | 4 | 21.3 | 14 | 35 | 6 | 32 | 3 | 2 | 0.73 | 45 | 2 | 0.65 |
| 20 | 105 | 75 | 14 | 4 | 26.9 | 16 | 38 | 6 | 40 | 4 | 2.3 | 1.03 | 58 | 2 | 0.95 |
| 25 | 115 | 85 | 14 | 4 | 33.7 | 16 | 38 | 6 | 45 | 4 | 2.6 | 1.23 | 68 | 2 | 1.14 |
| 32 | 140 | 100 | 18 | 4 | 42.4 | 16 | 40 | 6 | 56 | 5 | 2.6 | 1.8 | 78 | 2 | 1.65 |
| 40 | 150 | 110 | 18 | 4 | 48.3 | 16 | 42 | 7 | 64 | 5 | 2.6 | 2.08 | 88 | 3 | 1.83 |
| 50 | 165 | 125 | 18 | 4 | 60.3 | 18 | 45 | 8 | 75 | 5 | 2.9 | 2.77 | 102 | 3 | 2.48 |
| 65 | 185 | 145 | 18 | 4 | 76.1 | 18 | 45 | 10 | 90 | 6 | 2.9 | 3.36 | 122 | 3 | 3.03 |
| 80 | 200 | 160 | 18 | 8 | 88.9 | 20 | 50 | 10 | 105 | 6 | 3.2 | 4.16 | 138 | 3 | 3.82 |
| 100 | 220 | 180 | 18 | 8 | 114.3 | 20 | 52 | 12 | 131 | 6 | 3.6 | 4.8 | 158 | 3 | 4.41 |
| 125 | 250 | 210 | 18 | 8 | 139.7 | 22 | 55 | 12 | 156 | 6 | 4 | 6.52 | 188 | 3 | 6.07 |
| 150 | 285 | 240 | 22 | 8 | 168.3 | 22 | 55 | 12 | 184 | 8 | 4.5 | 8 | 212 | 3 | 7.4 |
| 200 | 340 | 295 | 22 | 8 | 219.1 | 24 | 62 | 16 | 235 | 8 | 5.6 | 11.74 | 268 | 3 | 11 |
| 250 | 395 | 350 | 22 | 12 | 273 | 26 | 68 | 16 | 292 | 10 | 6.3 | 15.8 | 320 | 3 | 14.92 |
| 300 | 445 | 400 | 22 | 12 | 323.9 | 26 | 68 | 16 | 344 | 10 | 7.1 | 18.83 | 370 | 4 | 17.47 |
| 350 | 505 | 460 | 22 | 16 | 355.6 | 26 | 68 | 16 | 385 | 10 | 7.1 | 25.24 | 430 | 4 | 23.7 |
| 400 | 565 | 515 | 26 | 16 | 406.4 | 26 | 72 | 16 | 440 | 10 | 7.1 | 30.59 | 482 | 4 | 28.72 |
| 450 | 615 | 565 | 26 | 20 | 457 | 28 | 72 | 16 | 488 | 12 | 7.1 | 35.08 | 532 | 4 | 33.06 |
| 500 | 670 | 620 | 26 | 20 | 508 | 28 | 75 | 16 | 542 | 12 | 7.1 | 40.56 | 585 | 4 | 38.27 |
| 600 | 780 | 725 | 30 | 20 | 610 | 28 | 80 | 18 | 642 | 12 | 7.1 | 50.29 | 685 | 5 | 46.56 |
NFE 29203 Type 11 PN 16 weld-on flanges
| DN | D | K | L | No. of Holes | A1 | C2 | H2 | H3 | N1 | R | S | Flat Face | Raised Face | ||
| KG | d1 | f1 | KG | ||||||||||||
| 10 | 90 | 60 | 14 | 4 | 17.2 | 14 | 35 | 6 | 28 | 3 | 1.8 | 0.65 | 40 | 2 | 0.58 |
| 15 | 95 | 65 | 14 | 4 | 21.3 | 14 | 35 | 6 | 32 | 3 | 2 | 0.73 | 45 | 2 | 0.65 |
| 20 | 105 | 75 | 14 | 4 | 26.9 | 16 | 38 | 6 | 40 | 4 | 2.3 | 1.03 | 58 | 2 | 0.95 |
| 25 | 115 | 85 | 14 | 4 | 33.7 | 16 | 38 | 6 | 45 | 4 | 2.6 | 1.23 | 68 | 2 | 1.14 |
| 32 | 140 | 100 | 18 | 4 | 42.4 | 16 | 40 | 6 | 56 | 5 | 2.6 | 1.8 | 78 | 2 | 1.65 |
| 40 | 150 | 110 | 18 | 4 | 48.3 | 16 | 42 | 7 | 64 | 5 | 2.6 | 2.08 | 88 | 3 | 1.83 |
| 50 | 165 | 125 | 18 | 4 | 60.3 | 18 | 45 | 8 | 75 | 5 | 2.9 | 2.77 | 102 | 3 | 2.48 |
| 65 | 185 | 145 | 18 | 4 | 76.1 | 18 | 45 | 10 | 90 | 6 | 2.9 | 3.36 | 122 | 3 | 3.03 |
| 80 | 200 | 160 | 18 | 8 | 88.9 | 20 | 50 | 10 | 105 | 6 | 3.2 | 4.16 | 138 | 3 | 3.82 |
| 100 | 220 | 180 | 18 | 8 | 114.3 | 20 | 52 | 12 | 131 | 6 | 3.6 | 4.8 | 158 | 3 | 4.41 |
| 125 | 250 | 210 | 18 | 8 | 139.7 | 22 | 55 | 12 | 156 | 6 | 4 | 6.52 | 188 | 3 | 6.07 |
| 150 | 285 | 240 | 22 | 8 | 168.3 | 22 | 55 | 12 | 184 | 8 | 4.5 | 8 | 212 | 3 | 7.4 |
| 200 | 340 | 295 | 22 | 12 | 219.1 | 24 | 62 | 16 | 235 | 8 | 5.6 | 11.45 | 268 | 3 | 10.75 |
| 250 | 405 | 355 | 26 | 12 | 273 | 26 | 70 | 16 | 292 | 10 | 6.3 | 16.86 | 320 | 3 | 15.87 |
| 300 | 460 | 410 | 26 | 12 | 323.9 | 28 | 78 | 16 | 344 | 10 | 7.1 | 22.74 | 378 | 4 | 21.24 |
| 350 | 520 | 470 | 26 | 16 | 355.6 | 30 | 82 | 16 | 390 | 10 | 8 | 33.05 | 438 | 4 | 31.38 |
| 400 | 580 | 525 | 30 | 16 | 406.4 | 32 | 85 | 16 | 445 | 10 | 8 | 41.32 | 490 | 4 | 39.3 |
| 450 | 640 | 585 | 30 | 20 | 457 | 34 | 85 | 16 | 490 | 12 | 8 | 49.17 | 550 | 4 | 46.97 |
| 500 | 715 | 650 | 33 | 20 | 508 | 34 | 90 | 16 | 548 | 12 | 8 | 62.52 | 610 | 4 | 59.63 |
| 600 | 840 | 770 | 36 | 20 | 610 | 36 | 95 | 18 | 652 | 12 | 8.8 | 87.29 | 725 | 5 | 82.54 |
NFE 29203 Type 11 PN 25 weld-on flange
| DN | D | K | L | No. of Holes | A1 | C2 | H2 | H3 | N1 | R | S | Flat Face | Raised Face | ||
| KG | d1 | f1 | KG | ||||||||||||
| 10 | 90 | 60 | 14 | 4 | 17.2 | 16 | 35 | 6 | 28 | 3 | 1.8 | 0.73 | 40 | 2 | 0.66 |
| 15 | 95 | 65 | 14 | 4 | 21.3 | 16 | 38 | 6 | 32 | 3 | 2 | 0.83 | 45 | 2 | 0.75 |
| 20 | 105 | 75 | 14 | 4 | 26.9 | 18 | 40 | 6 | 40 | 4 | 2.3 | 1.15 | 58 | 2 | 1.07 |
| 25 | 115 | 85 | 14 | 4 | 33.7 | 18 | 40 | 6 | 46 | 4 | 2.6 | 1.38 | 68 | 2 | 1.28 |
| 32 | 140 | 100 | 18 | 4 | 42.4 | 18 | 42 | 6 | 56 | 5 | 2.6 | 2.01 | 78 | 2 | 1.86 |
| 40 | 150 | 110 | 18 | 4 | 48.3 | 18 | 45 | 7 | 64 | 5 | 2.6 | 2.33 | 88 | 3 | 2.08 |
| 50 | 165 | 125 | 18 | 4 | 60.3 | 20 | 48 | 8 | 75 | 5 | 2.9 | 3.06 | 102 | 3 | 2.78 |
| 65 | 185 | 145 | 18 | 8 | 76.1 | 22 | 52 | 10 | 90 | 6 | 2.9 | 3.92 | 122 | 3 | 3.61 |
| 80 | 200 | 160 | 18 | 8 | 88.9 | 24 | 58 | 12 | 105 | 6 | 3.2 | 4.96 | 138 | 3 | 4.62 |
| 100 | 235 | 190 | 22 | 8 | 114.3 | 24 | 65 | 12 | 134 | 6 | 3.6 | 6.73 | 162 | 3 | 6.27 |
| 125 | 270 | 220 | 26 | 8 | 139.7 | 26 | 68 | 12 | 162 | 6 | 4 | 9.21 | 188 | 3 | 8.61 |
| 150 | 300 | 250 | 26 | 8 | 168.3 | 28 | 75 | 12 | 192 | 8 | 4.5 | 11.98 | 218 | 3 | 11.29 |
| 200 | 360 | 310 | 26 | 12 | 219.1 | 30 | 80 | 16 | 244 | 8 | 6.3 | 17.42 | 278 | 3 | 16.61 |
| 250 | 425 | 370 | 30 | 12 | 273 | 32 | 88 | 18 | 298 | 10 | 7.1 | 24.55 | 335 | 3 | 23.48 |
| 300 | 485 | 430 | 30 | 16 | 323.9 | 34 | 92 | 18 | 352 | 10 | 8 | 32.34 | 395 | 4 | 30.74 |
| 350 | 555 | 490 | 33 | 16 | 355.6 | 38 | 100 | 20 | 398 | 10 | 8 | 49.37 | 450 | 4 | 47.2 |
| 400 | 620 | 550 | 36 | 16 | 406.4 | 40 | 110 | 20 | 452 | 10 | 8.8 | 64.37 | 505 | 4 | 61.69 |
| 450 | 670 | 600 | 36 | 20 | 457 | 42 | 110 | 20 | 500 | 12 | 8.8 | 72.15 | 550 | 4 | 69.17 |
| 500 | 730 | 660 | 36 | 20 | 508 | 44 | 125 | 20 | 558 | 12 | 10 | 92.74 | 615 | 4 | 89.57 |
| 600 | 845 | 770 | 39 | 20 | 610 | 46 | 125 | 20 | 660 | 12 | 11 | 120.05 | 720 | 5 | 114.96 |
NFE 29203 Type 11 PN 40 weld-on flanges
| DN | D | K | L | No. of Holes | A1 | C2 | H2 | H3 | N1 | R | S | Flat Face | Raised Face | ||
| KG | d1 | f1 | KG | ||||||||||||
| 10 | 90 | 60 | 14 | 4 | 17.2 | 16 | 35 | 6 | 28 | 3 | 1.8 | 0.73 | 40 | 2 | 0.66 |
| 15 | 95 | 65 | 14 | 4 | 21.3 | 16 | 38 | 6 | 32 | 3 | 2 | 0.83 | 45 | 2 | 0.75 |
| 20 | 105 | 75 | 14 | 4 | 26.9 | 18 | 40 | 6 | 40 | 4 | 2.3 | 1.15 | 58 | 2 | 1.07 |
| 25 | 115 | 85 | 14 | 4 | 33.7 | 18 | 40 | 6 | 46 | 4 | 2.6 | 1.38 | 68 | 2 | 1.28 |
| 32 | 140 | 100 | 18 | 4 | 42.4 | 18 | 42 | 6 | 56 | 5 | 2.6 | 2.01 | 78 | 2 | 1.86 |
| 40 | 150 | 110 | 18 | 4 | 48.3 | 18 | 45 | 7 | 64 | 5 | 2.6 | 2.33 | 88 | 3 | 2.08 |
| 50 | 165 | 125 | 18 | 4 | 60.3 | 20 | 48 | 8 | 75 | 5 | 2.9 | 3.06 | 102 | 3 | 2.78 |
| 65 | 185 | 145 | 18 | 8 | 76.1 | 22 | 52 | 10 | 90 | 6 | 2.9 | 3.92 | 122 | 3 | 3.61 |
| 80 | 200 | 160 | 18 | 8 | 88.9 | 24 | 58 | 12 | 105 | 6 | 3.2 | 4.96 | 138 | 3 | 4.62 |
| 100 | 235 | 190 | 22 | 8 | 114.3 | 24 | 65 | 12 | 134 | 6 | 3.6 | 6.73 | 162 | 3 | 6.27 |
| 125 | 270 | 220 | 26 | 8 | 139.7 | 26 | 68 | 12 | 162 | 6 | 4 | 9.21 | 188 | 3 | 8.61 |
| 150 | 300 | 250 | 26 | 8 | 168.3 | 28 | 75 | 12 | 192 | 8 | 4.5 | 11.98 | 218 | 3 | 11.29 |
| 200 | 375 | 320 | 30 | 12 | 219.1 | 32 | 88 | 16 | 244 | 8 | 6.3 | 20.45 | 285 | 3 | 19.55 |
| 250 | 450 | 385 | 33 | 12 | 273 | 38 | 105 | 18 | 306 | 10 | 7.1 | 34.64 | 345 | 3 | 33.34 |
| 300 | 515 | 450 | 33 | 16 | 323.9 | 42 | 115 | 18 | 362 | 10 | 8 | 48.52 | 410 | 4 | 46.55 |
| 350 | 580 | 510 | 36 | 16 | 355.6 | 46 | 125 | 20 | 408 | 10 | 8.8 | 70.18 | 465 | 4 | 67.73 |
| 400 | 660 | 585 | 39 | 16 | 406.4 | 50 | 135 | 20 | 462 | 10 | 11 | 99.81 | 535 | 4 | 96.73 |
| 450 | 685 | 610 | 39 | 20 | 457 | 50 | 135 | 20 | 500 | 12 | 12.5 | 97.51 | 560 | 4 | 94.42 |
| 500 | 755 | 670 | 42 | 20 | 508 | 52 | 140 | 20 | 562 | 12 | 14.2 | 124.82 | 615 | 4 | 120.96 |
| 600 | 890 | 795 | 48 | 20 | 610 | 60 | 150 | 20 | 666 | 12 | 16 | 188.67 | 735 | 5 | 182.33 |
Features
- Excellent mechanical resistance
- Suitable for high pressures and temperatures
- Low risk of leakage
- Long lifespan
- Ideal for critical applications
Applications in North Africa
Morocco
- Refineries
- Renewable energies
Algeria
- Gas pipelines
- Petrochemical industry
Tunisia
- industrial networks
- Desalination
Libya
- Offshore projects
- Power plants
Egypt
- Chemical industry
- Water treatment
Manufacturing & Quality Control
- Chemical analysis and PMI
- Controlled Forge
- CNC Machining
- Non-destructive testing (UT, RT, MPI)
- Dimensional inspection
- Third-party inspection (SGS, BV, TÜV)
Why Choose Emirerri Steel Tunisia?
- Strong presence in North Africa
- EN & AFNOR compliant
- Competitive prices
- Fast delivery
- Tailor-made solutions
- Dedicated technical support
Packaging & Delivery
- Wooden crates / pallets
- Anti-corrosion protection
- EN compliant marking
- Delivery to Casablanca, Algiers, Tunis, Tripoli, Alexandria
Conclusion
Emirerri Steel Tunisia is a reliable supplier of flanged clamps in North Africa , offering products that comply with EN 1092-1 and AFNOR standards . Our solutions guarantee performance, durability, and safety for the most demanding industrial projects.
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