Home > Big Diameter Flanges
Jinay Metals is a famous producer and distributor of Big Diameter Flanges located in Dubai, UAE. Our products are heavy-duty, precision-engineered flanges which are oriented to large-scale, heavy-duty industrial application. Our Big Diameter Flanges will be produced with high-quality materials in order to be strong, durable, and resist to extreme pressure and temperature conditions. Jinay Metals is involved in oil and gas, petrochemicals, power generation, and marine industries with a strong dedication to providing our clients across the world quality products with high performance and punctual service.
Big Diameter Flanges are constructed from quality materials like carbon steel, stainless-steel, alloy steel, duplex and super duplex stainless steels to provide outstanding strength and durability. Big diameter flanges often contain other metals such as chromium, nickel, and molybdenum which provide great resistance to corrosion and to withstand high temperatures. Big diameter flanges provide high tensile and yield strength values, excellent toughness, and are well-suited to deal with stress and fatigue. Big diameter flanges are designed for heavy-duty applications and can maintain reliable performance even under elevated pressures and temperature, making them ideal for large pipelines and large-scale industrial systems.
| Size | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
|---|---|
| Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
| Pressure Rating ANSI | Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 |
| Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Coating | Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production Technique | Forged, Heat treated and machined |
| Connect Type/ Flange Face Type | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF) |
| Special design | As per your drawing AS, ANSI, BS, DIN and JIS 15 NB (1/2″) to 200 NB (8″) Equal and Reducing Configurations |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
| Equipment | Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc |
| Material | Inconel Large Diameter Flange, Hastelloy Large Diameter Flange, AISI 4130 Large Diameter Flange, Incoloy Big Diameter Flange, Nickel Alloy Large Diameter Flange, Titanium Big Diameter Flange, Super Duplex Big Diameter Flange, Brass Large Diameter Flange, Alloy 20 Large Diameter Flange, Duplex Steel Large Diameter Flange, Monel Large Diameter Flange, SMO 254 Big Diameter Flange, Stainless Steel Big Diameter Flange, Copper Nickel Large Diameter Flange. |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Big Diameter Flanges from Jinay Metals ensures unmatched quality and long-lasting performance. These Flanges are engineered for superior corrosion resistance, strength, and precision, making them ideal for a wide range of industrial applications. With a strong focus on customer satisfaction, timely delivery, and technical expertise. Jinay Metals providing reliable and high-performance Big Diameter Flanges tailored to meet your specific operational and project requirements.
| NPS | Pipe Diameter | Flange Inside Daimeter | Number of holes | Flange Daimeter | Thickness of Flange | Daimeter of Bolt Circle | Daimeter of Bolt Holes | Approx.Weight in kg | |
| DN | ISO | DIN | D5 | BN | D | b | K | d2 | KG/PCS |
| 10 | – | 14 | 14.5 | 4 | 90 | 16 | 60 | 14 | 0.7 |
| 17.2 | – | 17.7 | 4 | 90 | 16 | 60 | 14 | 0.69 | |
| 15 | – | 20 | 21 | 4 | 95 | 16 | 65 | 14 | 0.77 |
| 21.3 | – | 22 | 4 | 95 | 16 | 65 | 14 | 0.77 | |
| 20 | – | 25 | 26 | 4 | 105 | 18 | 75 | 14 | 1.06 |
| 26.9 | – | 27.6 | 4 | 105 | 18 | 75 | 14 | 1.05 | |
| 25 | – | 30 | 31 | 4 | 115 | 18 | 85 | 14 | 1.27 |
| 33.7 | – | 34.4 | 4 | 115 | 18 | 85 | 14 | 1.25 | |
| 32 | – | 38 | 39 | 4 | 140 | 18 | 100 | 18 | 1.86 |
| 42.4 | – | 43.1 | 4 | 140 | 18 | 100 | 18 | 1.83 | |
| 40 | – | 44.5 | 45.5 | 4 | 150 | 18 | 110 | 18 | 2.12 |
| 48.3 | – | 49 | 4 | 150 | 18 | 110 | 18 | 2.09 | |
| 50 | – | 57 | 58.1 | 4 | 165 | 20 | 125 | 18 | 2.78 |
| 60.3 | – | 61.1 | 4 | 165 | 20 | 125 | 18 | 2.74 | |
| 65 | 76.1 | – | 77.1 | 8 | 185 | 22 | 145 | 18 | 3.48 |
| 80 | 88.9 | – | 90.3 | 8 | 200 | 24 | 160 | 18 | 4.33 |
| 100 | – | 108 | 109.6 | 8 | 235 | 24 | 190 | 22 | 5.82 |
| 114.3 | – | 115.9 | 8 | 235 | 24 | 190 | 22 | 5.61 | |
| 125 | – | 133 | 134.8 | 8 | 270 | 26 | 220 | 26 | 7.91 |
| 139.7 | – | 141.6 | 8 | 270 | 26 | 220 | 26 | 7.6 | |
| 150 | – | 159 | 161.1 | 8 | 300 | 28 | 250 | 26 | 10.12 |
| 168.3 | – | 170.5 | 8 | 300 | 28 | 250 | 26 | 9.58 | |
| 175 | 193.7 | – | 196.1 | 12 | 350 | 32 | 295 | 30 | 14.45 |
| 200 | 219.1 | – | 221.8 | 12 | 375 | 34 | 320 | 30 | 16.9 |
| 250 | – | 267 | 270.2 | 12 | 450 | 38 | 385 | 33 | 27.28 |
| 273 | – | 276.2 | 12 | 450 | 38 | 385 | 33 | 26.51 | |
| 300 | 323.9 | – | 327.6 | 16 | 515 | 42 | 450 | 33 | 36.38 |
| 350 | 355.6 | – | 359.7 | 16 | 580 | 46 | 510 | 36 | 52.83 |
| – | 368 | 372.2 | 16 | 580 | 46 | 510 | 36 | 50.24 | |
| 400 | 406.4 | – | 411 | 16 | 660 | 50 | 585 | 39 | 74.71 |
| – | 419 | 423.7 | 16 | 660 | 50 | 585 | 39 | 71.44 | |
| 500 | 508 | – | 513.6 | 20 | 755 | 52 | 670 | 42 | 86.87 |
| 600 | 610 | – | 616.5 | 20 | 890 | 54 | 795 | 48 | 121.84 |
| 700 | 711 | – | 716 | 24 | 995 | 58 | 900 | 48 | 150.93 |
| 800 | 813 | – | 818 | 24 | 1140 | 64 | 1030 | 56 | 219.08 |
| 900 | 914 | – | 920 | 28 | 1250 | 70 | 1140 | 56 | 271.16 |
| 1000 | 1016 | – | 1022 | 28 | 1360 | 78 | 1250 | 56 | 344.95 |
| NPS | Dimensions Of Flange | Bolts Size | Weight of one flange 7.85 kilogram/ dm3) kilogram | |||||||
| NW | d1 | ds | D | b1 | k | Number | Thread | d2 | ||
| 10 | 14 17.2) | 14.5 17.7 | 90 | 14 | 60 | 4 | M12 | (1/2″) | 14 | 0.613 0.605 |
| 15 | 20 21.3) | 20.5 21.8 | 95 | 14 | 65 | 4 | M12 | (1/2″) | 14 | 0675 0.669 |
| 20 | 25 26.9) | 25.5 27.4 | 105 | 16 | 75 | 4 | M12 | (1/2″) | 14 | 0.947 0.936 |
| 25 | 30 33.7) | 30.5 34.2 | 115 | 16 | 85 | 4 | M12 | (1/2″) | 14 | 1.14 1.11 |
| 32 | 38 42.4) | 38.5 42.9 | 140 | 16 | 100 | 4 | M16 | (5/8″) | 18 | 1.66 1.62 |
| 40 | 44.5 48.3) | 45 48.8 | 150 | 16 | 110 | 4 | M16 | (5/8″) | 18 | 1.89 1.86 |
| 50 | 57 60.3) | 57.5 60.8 | 165 | 18 | 125 | 4 | M16 | (5/8″) | 18 | 2.51 2.47 |
| 65 | 76.1) | 76.6 | 185 | 18 | 145 | 4 | M16 | (5/8″) | 18 | 3.00 |
| 80 | 88.9) | 89.4 | 200 | 20 | 160 | 4 | M16 | (5/8″) | 18 | 3.79 |
| 100 | 108 114.3) | 108.5 114.8 | 220 | 20 | 180 | 8 | M16 | (5/8″) | 18 | 4.20 4.03 |
| 125 | 133 139.7) | 133.5 140.2 | 250 | 22 | 210 | 8 | M16 | (5/8″) | 18 | 5.71 5.46 |
| 150 | 159 168.3) | 159.5 168.8 | 285 | 22 | 210 | 8 | M16 | (3/4″) | 23 | 6.72 6.57 |
| 175 | 191 193.7) | 192 194.7 | 315 | 24 | 270 | 8 | M20 | (3/4″) | 23 | 8.60 8.45 |
| 200 | 216 219.1) | 216 220.1 | 340 | 24 | 295 | 8 | M20 | (3/4″) | 23 | 9.50 9.31 |
| 250 | 267 273) | 268 274 | 395 | 26 | 350 | 12 | M20 | (3/4″) | 23 | 12.5 11.9 |
| 400 | 406.4 419 | 407.4 420 | 565 | 32 | 515 | 16 | M24 | (7/8″) | 27 | 27.9 25.9 |
| 500 | 508) 521 | 509 522 | 670 | 38 | 620 | 20 | M24 | (7/8″) | 27 | 37.9 41.1 |
Jinay Metals, one of the leading suppliers of Big Diameter Flanges in Dubai, UAE, offers a wide selection of high-quality flanges suitable for various industrial applications. With an extensive inventory, reliable sourcing, and a strong commitment to quality, service, and timely delivery, Jinay Metals has established itself as a trusted name for premium stainless steel products across the UAE.
Yes, we provide Big Diameter Flanges to match your exact project requirements. At Jinay Metals, our team is dedicated to delivering tailored flanges solutions that ensure precision and reliability. For more information or personalized assistance, reach out to us at sales@jinaymetals.ae.
Big Diameter Flanges are widely applied in industries dealing with high pipelines and systems of volume flow. They are perfect in oil and gas refineries, petrochemical facilities, water treatment facilities, power generation facilities and offshore structures. These flanges offer leakage-free high-pressure and temperature piping systems of large diameter to provide effective transfer of fluids. They are also applicable in ship construction, steel plant and mechanical engineering works that involve high structural support. Their long life performance and accuracy in harsh industrial situations guarantee their long performance, low maintenance and reliability in the demanding work environments across the globe.
