Supachok Flanges, a top-notch manufacturer and supplier based in Bangkok, Thailand, is all about crafting high-quality DIN 2634 PN25 Weld Neck Flanges that are perfect for high-pressure piping systems. With a thoughtfully engineered long tapered hub, these flanges excel at distributing stress and ensuring a tight seal, making them a go-to choice for critical industrial applications. Built to comply with international DIN standards, the DIN 2634 PN25 Weld Neck Flanges boast impressive strength, corrosion resistance, and durability. Supachok Flanges is committed to providing reliable and cost-effective solutions for various industries, including petrochemical, oil and gas, marine, power generation, and water treatment plants, both in Thailand and beyond.
These flanges are made from high-quality stainless steel, carbon steel, or alloy steel, which gives them excellent corrosion resistance and the ability to handle high-pressure situations. Their sturdy construction means they can endure high temperatures, mechanical stress, and chemical exposure. On the mechanical side, these flanges are designed with high tensile strength, yield strength, and fatigue resistance, ensuring they maintain their structural integrity even under continuous use. The weld neck design minimizes stress concentration at the base, resulting in leak-proof connections and outstanding durability. This makes the DIN 2634 PN25 Weld Neck Flanges a perfect fit for demanding medium- to high-pressure piping 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 |
Supachok Flanges, a leading supplier in Bangkok, Thailand, 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 in industries that require strong, leak-proof, and durable connections. They play a crucial role in oil and gas refineries, petrochemical plants, and offshore installations where robust sealing is essential. Power generation facilities rely on them for high-pressure steam, water, and gas lines. The marine and shipbuilding sectors use these flanges in seawater cooling systems and onboard piping networks. They’re also vital in chemical processing plants, water treatment facilities, and industrial pipelines. Thanks to their solid weld neck design and exceptional mechanical properties, these flanges are truly built to last.
Yes, we offer custom sizes for DIN 2634 PN25 Weld Neck Flanges to meet specific project needs. Our team at Supachok Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@supachokflanges.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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