Ronwen Flanges, a top-notch manufacturer and supplier located in Cape Town, South Africa, is well-known for crafting high-quality **DIN 2635 PN40 Weld Neck Flanges** that adhere to international standards for precision and reliability. These flanges are designed to handle high-pressure and high-temperature environments, ensuring that connections are both leak-proof and durable. At Ronwen Flanges, we employ cutting-edge manufacturing techniques and use only the finest materials to produce products that boast exceptional strength and precise dimensions. Our **DIN 2635 PN40 Weld Neck Flanges** are perfect for demanding applications in industries like oil & gas, chemicals, petrochemicals, and power generation.
Constructed from premium materials such as carbon steel, stainless steel, and alloy steel, **DIN 2635 PN40 Weld Neck Flanges** provide outstanding mechanical strength and resistance to corrosion. Their composition typically includes carbon, manganese, chromium, nickel, and molybdenum, which work together to enhance hardness and durability. These flanges demonstrate a tensile strength ranging from 500 to 750 MPa and a yield strength between 250 and 600 MPa. With remarkable mechanical properties, including excellent weldability and toughness, they are well-suited for high-pressure and high-temperature 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 |
| 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 |
Ronwen Flanges, a leading supplier in Cape Town, South Africa, 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 extensively utilized in industries that demand secure and robust pipe connections under elevated pressure conditions. Their welded neck design promotes smooth flow, reduces turbulence, and minimizes stress concentration, making them ideal for critical systems. You’ll find these flanges commonly used in oil refineries, chemical plants, power stations, and marine engineering. With their superior pressure handling capabilities, corrosion resistance, and long service life, they are an excellent choice for pipelines that transport steam, oil, gas, and other high-pressure fluids safely and efficiently.
Yes, we offer custom sizes for DIN 2635 PN40 Weld Neck Flanges to meet specific project needs. Our team at Ronwen Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@ronwenflanges.co.za.
| 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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