Based in Midland, UK, Hudson Flanges is a specialist manufacturer of high quality flanges such as ring-type joint (RTJ) flanges. Our RTJ flanges are used for high quality oils such as seals and it is commonly used in petrochemical and other gas industries. With years of experience and commitment to quality, we offer a reliable, durable and tailored flange solution to satisfy their individual requirements. Trust Hudson flanges for precision engineered products that guarantee high performance in challenging applications.
Ring type joint (RTJ) flanges are generally constructed from high-strength materials like carbon steel, stainless steel, alloys, and duplex steels. It is grooved to fit the steel ring gasket, which provides a tight seal. Technical characteristics involve excellent tensile strength, excellent corrosion resistance, and resistance to high pressure and temperature Benefits of RTJ flanges involve water proofing, reliability and endurance in high pressure and high temperature zones, hence being suitable for oil, gas and petrochemical plants Simple to install and maintain.
| 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 |
| 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 Ring Type Joint Flange, Incoloy Ring Type Joint Flange, Monel Ring Type Joint Flange, Hastelloy Ring Type Joint Flange, Copper Nickel Ring Type Joint Flange, Alloy 20 Ring Type Joint Flange, Nickel Alloy Ring Type Joint Flange, AISI 4130 Ring Type Joint Flange, Titanium Ring Type Joint Flange, Brass Ring Type Joint Flange, Stainless Steel Ring Type Joint Flange, Duplex Steel Ring Type Joint Flange, Super Duplex Ring Type Joint Flange, SMO 254 Ring Type Joint Flange. |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
Hudson Flanges, a leading supplier in Midland, UK, offers an extensive selection of Ring Type Joint 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.
Ring type joint (RTJ) flanges find extensive application in processes involving high pressure and high temperatures. Widely used in the oil, gas, and petrochemical industries, RTJ flanges are applied to pipelines, pressure vessels, and refineries. With their steel ring gaskets providing a tight, leak-free seal, they are suitable for mission-critical applications on offshore platforms, chemical facilities, and electrical RTJ flanges are applied to valves, compressors, and other heavy machinery which should demand severe operating conditions The system offers strength and reliability.
| Size in Inch | Size in mm | Outer Dia. | Flange Thickness | Hub OD | Weld Neck OD | Welding Neck Length | Ring Type Joint RF Dia | Ring Type Joint RF Height | PCD | Ring Type Joint Pitch dia | Ring Type Joint Depth | Ring Type Joint Width | Bore |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | I | J | K | L | ||
| 1/2 | 15 | 90 | 9.6 | 30 | 21.3 | 46 | N/A | N/A | 60.3 | N/A | N/A | N/A | Welding Neck bore is derived from the pipe schedule |
| 3/4 | 20 | 100 | 11.2 | 38 | 26.7 | 51 | N/A | N/A | 69.9 | N/A | N/A | N/A | |
| 1 | 25 | 110 | 12.7 | 49 | 33.4 | 54 | 63.5 | 6.35 | 79.4 | 47.63 | 6.35 | 8.74 | |
| 1 1/4 | 32 | 115 | 14.3 | 59 | 42.2 | 56 | 73 | 6.35 | 88.9 | 57.15 | 6.35 | 8.74 | |
| 1 1/2 | 40 | 125 | 15.9 | 65 | 48.3 | 60 | 82.5 | 6.35 | 98.4 | 65.07 | 6.35 | 8.74 | |
| 2 | 50 | 150 | 17.5 | 78 | 60.3 | 62 | 102 | 6.35 | 120.7 | 82.55 | 6.35 | 8.74 | |
| 2 1/2 | 65 | 180 | 20.7 | 90 | 73 | 68 | 121 | 6.35 | 139.7 | 101.6 | 6.35 | 8.74 | |
| 3 | 80 | 190 | 22.3 | 108 | 88.9 | 68 | 133 | 6.35 | 152.4 | 114.3 | 6.35 | 8.74 | |
| 3 1/2 | 90 | 215 | 22.3 | 122 | 101.6 | 70 | 154 | 6.35 | 177.8 | 131.78 | 6.35 | 8.74 | |
| 4 | 100 | 230 | 22.3 | 135 | 114.3 | 75 | 171 | 6.35 | 190.5 | 149.23 | 6.35 | 8.74 | |
| 5 | 125 | 255 | 22.3 | 164 | 141.3 | 87 | 194 | 6.35 | 215.9 | 171.45 | 6.35 | 8.74 | |
| 6 | 150 | 280 | 23.9 | 192 | 168.3 | 87 | 219 | 6.35 | 241.3 | 193.68 | 6.35 | 8.74 | |
| 8 | 200 | 345 | 27 | 246 | 219.1 | 100 | 273 | 6.35 | 298.5 | 247.65 | 6.35 | 8.74 | |
| 10 | 250 | 405 | 28.6 | 305 | 273 | 100 | 330 | 6.35 | 362 | 304.8 | 6.35 | 8.74 | |
| 12 | 300 | 485 | 30.2 | 365 | 323.8 | 113 | 406 | 6.35 | 431.8 | 381 | 6.35 | 8.74 | |
| 14 | 350 | 535 | 33.4 | 400 | 355.6 | 125 | 425 | 6.35 | 476.3 | 396.88 | 6.35 | 8.74 | |
| 16 | 400 | 595 | 35 | 457 | 406.4 | 125 | 483 | 6.35 | 539.8 | 454.03 | 6.35 | 8.74 | |
| 18 | 450 | 635 | 38.1 | 505 | 457.2 | 138 | 546 | 6.35 | 577.9 | 517.53 | 6.35 | 8.74 | |
| 20 | 500 | 700 | 41.3 | 559 | 508 | 143 | 597 | 6.35 | 635 | 558.8 | 6.35 | 8.74 | |
| 24 | 600 | 815 | 46.1 | 663 | 610 | 151 | 711 | 6.35 | 749.3 | 673.1 | 6.35 | 8.74 |
| Size in Inch | Size in mm | Outer Dia. | Flange Thickness | Hub OD | Weld Neck OD | Welding Neck Length | Ring Type Joint RF Dia | Ring Type Joint RF Height | PCD | Ring Type Joint Pitch dia | Ring Type Joint Depth | Ring Type Joint Width | Bore |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | I | J | K | L | ||
| 1/2 | 15 | 95 | 12.7 | 38 | 21.3 | 51 | 51 | 5.54 | 66.7 | 34.14 | 5.54 | 7.14 | Welding Neck bore is derived from the pipe schedule |
| 3/4 | 20 | 115 | 14.3 | 48 | 26.7 | 56 | 63.5 | 6.35 | 82.6 | 42.88 | 6.35 | 8.74 | |
| 1 | 25 | 125 | 15.9 | 54 | 33.4 | 60 | 70 | 6.35 | 88.9 | 50.8 | 6.35 | 8.74 | |
| 1 1/4 | 32 | 135 | 17.5 | 64 | 42.2 | 64 | 79.5 | 6.35 | 98.4 | 60.33 | 6.35 | 8.74 | |
| 1 1/2 | 40 | 155 | 19.1 | 70 | 48.3 | 67 | 90.5 | 6.35 | 114.3 | 68.27 | 6.35 | 8.74 | |
| 2 | 50 | 165 | 20.7 | 84 | 60.3 | 68 | 108 | 7.92 | 127 | 82.55 | 7.92 | 11.91 | |
| 2 1/2 | 65 | 190 | 23.9 | 100 | 73 | 75 | 127 | 7.92 | 149.2 | 101.6 | 7.92 | 11.91 | |
| 3 | 80 | 210 | 27 | 117 | 88.9 | 78 | 146 | 7.92 | 168.3 | 123.83 | 7.92 | 11.91 | |
| 3 1/2 | 90 | 230 | 28.6 | 133 | 101.6 | 79 | 159 | 7.92 | 184.2 | 131.78 | 7.92 | 11.91 | |
| 4 | 100 | 255 | 30.2 | 146 | 114.3 | 84 | 175 | 7.92 | 200 | 149.23 | 7.92 | 11.91 | |
| 5 | 125 | 280 | 33.4 | 178 | 141.3 | 97 | 210 | 7.92 | 235 | 180.98 | 7.92 | 11.91 | |
| 6 | 150 | 320 | 35 | 206 | 168.3 | 97 | 241 | 7.92 | 269.9 | 211.12 | 7.92 | 11.91 | |
| 8 | 200 | 380 | 39.7 | 260 | 219.1 | 110 | 302 | 7.92 | 330.2 | 269.88 | 7.92 | 11.91 | |
| 10 | 250 | 445 | 46.1 | 321 | 273 | 116 | 356 | 7.92 | 387.4 | 323.85 | 7.92 | 11.91 | |
| 12 | 300 | 520 | 49.3 | 375 | 323.8 | 129 | 413 | 7.92 | 450.8 | 381 | 7.92 | 11.91 | |
| 14 | 350 | 585 | 52.4 | 425 | 355.6 | 141 | 457 | 7.92 | 514.4 | 419.1 | 7.92 | 11.91 | |
| 16 | 400 | 650 | 55.6 | 483 | 406.4 | 144 | 508 | 7.92 | 571.5 | 469.9 | 7.92 | 11.91 | |
| 18 | 450 | 710 | 58.8 | 533 | 457 | 157 | 575 | 7.92 | 628.6 | 533.4 | 7.92 | 11.91 | |
| 20 | 500 | 775 | 62 | 587 | 508 | 160 | 635 | 9.53 | 685.8 | 584.2 | 9.53 | 13.49 | |
| 24 | 600 | 915 | 68.3 | 702 | 610 | 167 | 749 | 11.13 | 812.8 | 692.15 | 11.13 | 16.66 |
| Pipe Size | 150 # | 300 # | 600 # | 900 # | 1500 # | 2500 # | ||||||||||||
| WN | SO | BLD | WN | SO | BLD | WN | SO | BLD | WN | SO | BLD | WN | SO | BLD | WN | SO | BLD | |
| 1/2″ | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 2 | SEE 1500 # WEIGHTS | 5 | 4 | 4 | 7 | 7 | 7 | ||
| 3/4″ | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 3 | 3 | SEE 1500 # WEIGHTS | 6 | 5 | 6 | 8 | 8 | 8 | ||
| 1″ | 3 | 2 | 2 | 4 | 3 | 3 | 4 | 4 | 4 | SEE 1500 # WEIGHTS | 9 | 8 | 8 | 12 | 11 | 11 | ||
| 1 1/2″ | 4 | 3 | 3 | 7 | 6 | 6 | 8 | 7 | 8 | SEE 1500 # WEIGHTS | 13 | 12 | 13 | 25 | 22 | 23 | ||
| 2″ | 6 | 5 | 5 | 9 | 7 | 8 | 12 | 9 | 10 | SEE 1500 # WEIGHTS | 25 | 25 | 25 | 42 | 37 | 39 | ||
| 2 1/2″ | 8 | 7 | 7 | 12 | 10 | 12 | 18 | 13 | 15 | SEE 1500 # WEIGHTS | 36 | 36 | 35 | 52 | 55 | 56 | ||
| 3″ | 10 | 8 | 9 | 15 | 13 | 16 | 23 | 16 | 20 | 31 | 26 | 29 | 48 | 48 | 48 | 94 | 83 | 86 |
| 4″ | 15 | 13 | 17 | 25 | 22 | 27 | 42 | 37 | 41 | 53 | 53 | 54 | 73 | 73 | 73 | 145 | 125 | 130 |
| 5″ | 19 | 15 | 20 | 32 | 28 | 35 | 68 | 63 | 68 | 86 | 83 | 87 | 130 | 130 | 140 | 245 | 210 | 225 |
| 6″ | 24 | 19 | 26 | 42 | 39 | 50 | 81 | 80 | 86 | 110 | 110 | 115 | 165 | 165 | 160 | 380 | 325 | 345 |
| 8″ | 39 | 30 | 45 | 67 | 58 | 81 | 120 | 115 | 140 | 175 | 170 | 200 | 275 | 260 | 300 | 580 | 485 | 530 |
| 10″ | 52 | 43 | 70 | 91 | 81 | 124 | 190 | 170 | 230 | 260 | 245 | 290 | 455 | 435 | 510 | 1075 | 930 | 1025 |
| 12″ | 80 | 64 | 110 | 140 | 115 | 185 | 225 | 200 | 295 | 325 | 325 | 415 | 690 | 580 | 690 | 1525 | 1100 | 1300 |
| 14″ | 110 | 90 | 140 | 180 | 165 | 250 | 280 | 230 | 355 | 400 | 400 | 520 | 940 | NA | 975 | NA | NA | NA |
| 16″ | 140 | 98 | 180 | 250 | 190 | 295 | 390 | 330 | 495 | 495 | 425 | 600 | 1250 | NA | 1300 | NA | NA | NA |
| 18″ | 150 | 130 | 220 | 320 | 250 | 395 | 475 | 400 | 630 | 680 | 600 | 850 | 1625 | NA | 1750 | NA | NA | NA |
| 20″ | 180 | 165 | 285 | 400 | 315 | 505 | 590 | 510 | 810 | 830 | 730 | 1075 | 2050 | NA | 2225 | NA | NA | NA |
| 22″ | 225 | 185 | 355 | 465 | 370 | 640 | 720 | 590 | 1000 | NA | NA | NA | NA | NA | NA | NA | NA | NA |
| 24″ | 260 | 220 | 430 | 580 | 475 | 790 | 830 | 730 | 1250 | 1500 | 1400 | 2025 | 3325 | NA | 3625 | NA | NA | NA |
Yes, we offer custom sizes for Ring Type Joint Flanges to meet specific project needs. Our team at Hudson Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@hudsonflanges.co.uk.
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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