Quan Flanges and Plates is a well-respected manufacturer and supplier based in Da Nang, Vietnam, specializing in high-quality DIN 2634 PN25 Weld Neck Flanges. These flanges are crafted to meet both German and international standards, ensuring they provide secure and leak-proof connections in piping systems that operate under moderate to high pressure. Renowned for their durability, precise dimensions, and outstanding corrosion resistance, DIN 2634 PN25 Weld Neck Flanges are a go-to choice in industries that prioritize strength and reliability. With cutting-edge production technology and rigorous quality control, Quan Flanges and Plates guarantees products that promise a long service life and consistent performance.
Made from top-notch carbon steel, stainless steel, alloy steel, and duplex steel, DIN 2634 PN25 Weld Neck Flanges boast exceptional mechanical strength and wear resistance. Their material composition ensures impressive tensile and yield strength, hardness, and resistance to cracking, fatigue, and deformation. The unique extended neck design helps distribute stress evenly across the joint, boosting durability and stability under pressure. Thanks to precision machining, these flanges come with accurate dimensions and a smooth finish, while robust metallurgy ensures operational safety even in harsh environments, making them reliable for critical industrial applications.
| Size Chart | 1/2″ (15 NB) To 48″ (1200NB) |
| Coating Flanges Faces | Zinc Plated, Oil Black Paint, Yellow Transparent, Cold and Hot Dip Galvanized, Anti-rust Paint |
| Design For Size | DIN, EN, ASA, PN, JIS, BS, ANSI, ASME |
| Pressure Rating Table | Class 150 LBS, Class 300 LBS, Class 600 LBS, Class 900 LBS, Class 1500 LBS, Class 2500 LBS |
| Supporting Flanges Material | Flanges Bolts, Gasket, Ring Joint |
| Connect Type Type | FF, RTJ, SMF, LMF, RF, LJF |
| Production Process | Forged, Heat Treated and Machined |
| Standard | ASME B16.38 Flange, DIN Flange, ISO Flange, JIS Flange, PN Flange, MSS SP44 Flange, EN-1092 Flange, BS10 Flange, ASME B16.47 (Series A, Series B) Flange, UNI Flange, ASME B16.5 Flange, AWWA Flange, DIN Flange, GOST Flange |
| Machining Equipment | Bending machine, Sand-blasting machine, Press machine, Pushing Machine, Electric bevelling machine etc |
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Germany standard flange DIN 2634 welding neck flanges; nominal pressure 16 |
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Brides à souder à collerette DIN 2634: pression nominale 16 |
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| Pipe | Flange | Neck | Raised face | Screws | Weight | |||||||||||
| (7,85 Kg/dm3) | ||||||||||||||||
| Rated | d1 | D | b | k | h1 | d3 | s | r | h2 | d4 | f | Holes | Thread | d2 | Kg | |
| Diameter | ISO Series | DIN Series | ||||||||||||||
| 15 | – | 20 | 95 | 14 | 65 | 35 | 30 | 2 | 4 | 6 | 45 | 2 | 4 | M 12 | 14 | 0,648 |
| 21,3 | – | 32 | ||||||||||||||
| 20 | – | 25 | 105 | 16 | 75 | 38 | 38 | 2,3 | 4 | 6 | 58 | 2 | 4 | M 12 | 14 | 0,952 |
| 26,9 | – | 40 | ||||||||||||||
| 25 | – | 30 | 115 | 16 | 85 | 38 | 42 | 2,6 | 4 | 6 | 68 | 2 | 4 | M 12 | 14 | 1,14 |
| 33,7 | – | 45 | ||||||||||||||
| 32 | – | 38 | 140 | 16 | 100 | 40 | 52 | 2,6 | 6 | 6 | 78 | 2 | 4 | M 16 | 18 | 1,69 |
| 42,4 | – | 56 | ||||||||||||||
| 40 | – | 44,5 | 150 | 16 | 110 | 42 | 60 | 2,6 | 6 | 7 | 88 | 3 | 4 | M 16 | 18 | 1,86 |
| 48,3 | – | 64 | ||||||||||||||
| 50 | – | 57 | 165 | 18 | 125 | 45 | 72 | 2,9 | 6 | 8 | 102 | 3 | 4 | M 16 | 18 | 2,53 |
| 60,3 | – | 75 | ||||||||||||||
| 65 | 76,1 | – | 185 | 18 | 145 | 45 | 90 | 2,9 | 6 | 10 | 122 | 3 | 4 | M 16 | 18 | 3,06 |
| 80 | 88,9 | – | 200 | 20 | 160 | 50 | 105 | 3,2 | 8 | 10 | 138 | 3 | 8 | M 16 | 18 | 3,7 |
| 100 | – | 108 | 220 | 20 | 180 | 52 | 125 | 3,6 | 8 | 12 | 158 | 3 | 8 | M 16 | 18 | 4,62 |
| 114,3 | – | 131 | ||||||||||||||
| 125 | – | 133 | 250 | 22 | 210 | 55 | 150 | 4 | 8 | 12 | 188 | 3 | 8 | M 16 | 18 | 6,3 |
| 139,7 | – | 156 | ||||||||||||||
| 150 | – | 159 | 285 | 22 | 240 | 55 | 175 | 4,5 | 10 | 12 | 212 | 3 | 8 | M 20 | 22 | 7,75 |
| 168,3 | – | 184 | ||||||||||||||
| (175) | 193,7 | – | 315 | 24 | 270 | 60 | 210 | 5,4 | 10 | 12 | 242 | 3 | 8 | M 20 | 22 | 9,85 |
| 200 | 219,1 | – | 340 | 24 | 295 | 62 | 235 | 5,9 | 10 | 16 | 268 | 3 | 12 | M 20 | 22 | 11 |
| 250 | – | 267 | 405 | 26 | 355 | 70 | 285 | 6,3 | 12 | 16 | 320 | 3 | 12 | M 24 | 26 | 15,6 |
| 273 | – | 292 | ||||||||||||||
| 300 | 323,9 | – | 460 | 28 | 410 | 78 | 344 | 7,1 | 12 | 16 | 378 | 4 | 12 | M 24 | 26 | 22 |
| 350 | 355,6 | – | 520 | 30 | 470 | 82 | 390 | 8 | 12 | 16 | 438 | 4 | 16 | M 24 | 26 | 31,2 |
| – | 368 | 28,8 | ||||||||||||||
| 400 | 406,4 | – | 580 | 32 | 525 | 85 | 445 | 8 | 12 | 16 | 490 | 4 | 16 | M 27 | 30 | 39,3 |
| – | 419 | 36,3 | ||||||||||||||
| (450) | 457 | – | 640 | 34 | 585 | 85 | 490 | 8 | 12 | 16 | 550 | 4 | 20 | M 27 | 30 | 44,3 |
| 500 | 508 | – | 715 | 34 | 650 | 90 | 548 | 8 | 12 | 16 | 610 | 4 | 20 | M 30 | 33 | 61 |
| 600 | 610 | – | 840 | 36 | 770 | 95 | 652 | 8,8 | 12 | 18 | 725 | 5 | 20 | M 33 | 36 | 75,4 |
| 700 | 711 | – | 910 | 36 | 840 | 100 | 755 | 8,8 | 12 | 18 | 795 | 5 | 24 | M 33 | 36 | 77 |
| 800 | 813 | – | 1025 | 38 | 950 | 105 | 855 | 10 | 12 | 20 | 900 | 5 | 24 | M 36 | 39 | 101 |
| 900 | 914 | – | 1125 | 40 | 1050 | 110 | 955 | 10 | 12 | 20 | 1000 | 5 | 28 | M 36 | 39 | 122 |
| 1000 | 1016 | – | 1255 | 42 | 1170 | 120 | 1058 | 10 | 16 | 22 | 1115 | 5 | 28 | M 39 | 42 | 162 |
Quan Flanges, a leading supplier in Da Nang, Vietnam, offers an extensive selection of DIN 2634 PN25 Weld Neck Flanges , including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
You’ll find DIN 2634 PN25 Weld Neck Flanges widely used in oil refineries, chemical processing plants, power generation facilities, water treatment plants, shipbuilding, and offshore engineering. They’re particularly well-suited for pipelines that transport oil, gas, steam, and corrosive fluids under moderate to high pressure. Their strong welded connections guarantee leak-proof performance, structural integrity, and resistance to vibration or thermal expansion. Plus, these flanges are designed for easy inspection and maintenance, making them a practical choice for long-term operations. With their reliability, strength, and versatility, DIN 2634 PN25 Weld Neck Flanges are a top pick for industries around the globe.
Yes, we offer custom sizes for DIN 2634 PN25 Weld Neck Flanges to meet specific project needs. Our team at Quan Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@quanflanges.com.
| NPS NPS (inch) | |||||
|---|---|---|---|---|---|
| Diammeter of Flange (inch) | No. of Bolts | Diammeter of Bolts (inch) | Diammeter of Bolt Holes (inch) | Bolt Circle (inch) | |
| 1/4 | 3-3/8 | 4 | 1/2 | 0.62 | 2-1/4 |
| 1/2 | 3-1/2 | 4 | 1/2 | 0.62 | 2-3/8 |
| 3/4 | 3-7/8 | 4 | 1/2 | 0.62 | 2-3/4 |
| 1 | 4-1/4 | 4 | 1/2 | 0.62 | 3-1/8 |
| 1-1/4 | 4-5/8 | 4 | 1/2 | 0.62 | 3-1/2 |
| 1-1/2 | 5 | 4 | 1/2 | 0.62 | 3-7/8 |
| 2 | 6 | 4 | 5/8 | 0.75 | 4-3/4 |
| 2-1/2 | 7 | 4 | 5/8 | 0.75 | 5-1/2 |
| 3 | 7-1/2 | 4 | 5/8 | 0.75 | 6 |
| 3-1/2 | 8-1/2 | 8 | 5/8 | 0.75 | 7 |
| 4 | 9 | 8 | 5/8 | 0.75 | 7-1/2 |
| 5 | 10 | 8 | 3/4 | 0.88 | 8-1/2 |
| 6 | 11 | 8 | 3/4 | 0.88 | 9-1/2 |
| 8 | 13-1/2 | 8 | 3/4 | 0.88 | 11-3/4 |
| 10 | 16 | 12 | 7/8 | 1 | 14-1/4 |
| 12 | 19 | 12 | 7/8 | 1 | 17 |
| 14 | 21 | 12 | 1 | 1.12 | 18-3/4 |
| 16 | 23-1/2 | 16 | 1 | 1.12 | 21-1/4 |
| 18 | 25 | 16 | 1-1/8 | 1.25 | 22-3/4 |
| 20 | 27-1/2 | 20 | 1-1/8 | 1.25 | 25 |
| 24 | 32 | 20 | 1-1/4 | 1.38 | 29-1/2 |
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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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