Supachok Flanges, a reputable manufacturer and supplier based in Bangkok, Thailand, specializes in top-notch DIN 2635 PN40 Weld Neck Flanges that are built to endure extreme pressures and tough industrial conditions. These flanges are crafted in line with DIN standards, guaranteeing precision, durability, and safety for demanding piping systems. With a long tapered hub design, the DIN 2635 PN40 Weld Neck Flanges effectively distribute stress, ensuring exceptional strength and leak-proof performance. Supachok Flanges caters to various industries, including oil and gas, petrochemical, marine, power generation, and water treatment, providing reliable and high-performance flange solutions both in Thailand and around the globe.
Made from stainless steel, carbon steel, or alloy steel, DIN 2635 PN40 Weld Neck Flanges boast impressive strength, toughness, and resistance to corrosion and high temperatures. Their material composition ensures remarkable durability even under high-pressure conditions. Mechanically, they offer high tensile and yield strength, excellent fatigue resistance, and a long service life. The weld neck design helps reduce stress concentration at the joint, enhancing structural integrity and ensuring leak-free performance. Thanks to their robust materials and mechanical properties, these flanges are perfect for critical high-pressure applications in industrial piping systems.
| 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 |
| 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 | 16 | 65 | 38 | 30 | 2 | 4 | 6 | 45 | 2 | 4 | M 12 | 14 | 0,746 |
| 21,3 | – | 32 | ||||||||||||||
| 20 | – | 25 | 105 | 18 | 75 | 40 | 38 | 2,3 | 4 | 6 | 58 | 2 | 4 | M 12 | 14 | 1,06 |
| 26,9 | – | 40 | ||||||||||||||
| 25 | – | 30 | 115 | 18 | 85 | 40 | 42 | 2,6 | 4 | 6 | 68 | 2 | 4 | M 12 | 14 | 1,29 |
| 33,7 | – | 45 | ||||||||||||||
| 32 | – | 38 | 140 | 18 | 100 | 42 | 52 | 2,6 | 6 | 6 | 78 | 2 | 4 | M 16 | 18 | 1,88 |
| 42,4 | – | 56 | ||||||||||||||
| 40 | – | 44,5 | 150 | 18 | 110 | 45 | 60 | 2,6 | 6 | 7 | 88 | 3 | 4 | M 16 | 18 | 2,33 |
| 48,3 | – | 64 | ||||||||||||||
| 50 | – | 57 | 165 | 20 | 125 | 48 | 72 | 2,9 | 6 | 8 | 102 | 3 | 4 | M 16 | 18 | 2,82 |
| 60,3 | – | 75 | ||||||||||||||
| 65 | 76,1 | – | 185 | 22 | 145 | 52 | 90 | 2,9 | 6 | 10 | 122 | 3 | 8 | M 16 | 18 | 3,74 |
| 80 | 88,9 | – | 200 | 24 | 160 | 58 | 105 | 3,2 | 8 | 12 | 138 | 3 | 8 | M 16 | 18 | 4,75 |
| 100 | – | 108 | 235 | 24 | 190 | 65 | 128 | 3,6 | 8 | 12 | 162 | 3 | 8 | M 20 | 22 | 6,52 |
| 114,3 | – | 134 | ||||||||||||||
| 125 | – | 133 | 270 | 26 | 220 | 68 | 155 | 4 | 8 | 12 | 188 | 3 | 8 | M 24 | 26 | 9,07 |
| 139,7 | – | 162 | ||||||||||||||
| 150 | – | 159 | 300 | 28 | 250 | 75 | 182 | 4,5 | 10 | 12 | 218 | 3 | 8 | M 24 | 26 | 11,8 |
| 168,3 | – | 192 | ||||||||||||||
| (175) | 193,7 | – | 350 | 32 | 295 | 82 | 218 | 5,6 | 10 | 15 | 260 | 3 | 12 | M 27 | 30 | 18,2 |
| 200 | 219,1 | – | 375 | 34 | 320 | 88 | 244 | 6,3 | 10 | 16 | 285 | 3 | 12 | M 27 | 30 | 21,5 |
| 250 | – | 267 | 450 | 38 | 385 | 105 | 298 | 7,1 | 12 | 18 | 345 | 3 | 12 | M 30 | 33 | 34,9 |
| 273 | – | 306 | ||||||||||||||
| 300 | 323,9 | – | 515 | 42 | 450 | 115 | 362 | 8 | 12 | 18 | 410 | 4 | 16 | M 30 | 33 | 49,7 |
| 350 | 355,6 | – | 580 | 46 | 510 | 125 | 408 | 8,8 | 12 | 20 | 465 | 4 | 16 | M 33 | 36 | 68,1 |
| – | 368 | |||||||||||||||
| 400 | 406,4 | – | 660 | 50 | 585 | 135 | 462 | 11 | 12 | 20 | 535 | 4 | 16 | M 36 | 39 | 96,5 |
| – | 419 | |||||||||||||||
| (450) | 457 | – | 685 | 50 | 610 | 135 | 500 | 12,5 | 12 | 20 | 560 | 4 | 20 | M 36 | 39 | 99,7 |
| 500 | 508 | – | 755 | 52 | 670 | 140 | 562 | 14,2 | 12 | 20 | 615 | 4 | 20 | M 39 | 42 | 117 |
Supachok Flanges, a leading supplier in Bangkok, Thailand, offers an extensive selection of DIN 2635 PN40 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.
DIN 2635 PN40 Weld Neck Flanges are commonly utilized in industries where secure and reliable high-pressure piping connections are crucial. They find extensive use in oil and gas refineries, offshore platforms, and petrochemical plants to facilitate safe fluid and gas transfer. Power generation facilities incorporate them in steam, gas, and water pipelines that operate under elevated pressures. The marine and shipbuilding industries rely on these flanges for seawater cooling systems and onboard piping networks. Additionally, they are essential in chemical processing units and water treatment facilities. Their high-pressure rating and superior weld neck design make them ideal for long-lasting performance in demanding applications.
Yes, we offer custom sizes for DIN 2635 PN40 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.
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