Harsh Flanges, located in Mumbai, India, has earned a solid reputation as a leading manufacturer and supplier of SORF (Slip-On Raised Face) Flanges. We specialize in providing precision-engineered flange solutions tailored for a wide range of industrial applications. Our SORF flanges are crafted from top-notch materials like carbon steel, stainless steel, and alloy steel, ensuring they boast exceptional strength, durability, and resistance to corrosion. Built to meet international standards such as ASME, DIN, and EN, these flanges are perfect for low-pressure and non-critical applications. Thanks to our cutting-edge manufacturing processes, rigorous quality control, and timely delivery, Harsh Flanges has become synonymous with reliable and cost-effective SORF flanges for clients around the world.
Our SORF Flanges come in various materials, including stainless steel (304/316), carbon steel (A105), and alloy steel. The composition differs depending on the grade—stainless steel typically contains 18–20% Chromium and 8–12% Nickel, which provides outstanding corrosion resistance. Carbon steel SORF flanges offer impressive tensile strength (around 485–620 MPa) and yield strength (250–310 MPa). These flanges are designed for easy installation, good weldability, and can handle moderate pressure. Their raised face design improves sealing with gaskets, making them a great fit for pipeline systems transporting both fluids and gases.
| 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 SORF Flange, Incoloy SORF Flange, Monel SORF Flange, Hastelloy SORF Flange, Copper Nickel SORF Flange, Alloy 20 SORF Flange, Nickel Alloy SORF Flange, AISI 4130 SORF Flange, Titanium SORF Flange, Brass SORF Flange, Stainless Steel SORF Flange, Duplex Steel SORF Flange, Super Duplex SORF Flange, SMO 254 SORF Flange. |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
Harsh Flanges, a leading supplier in Mumbai, India, offers an extensive selection of SORF 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.
SORF Flanges are extensively utilized in industries that need secure yet non-critical pipe connections. They’re perfect for applications in chemical processing, water treatment, oil & gas, food and beverage, shipbuilding, and HVAC systems. Thanks to their straightforward design and ease of welding, SORF flanges are commonly found in low to medium-pressure pipelines where frequent disassembly isn’t required. The raised face enhances sealing with gasket materials, minimizing the risk of leaks. Their affordability and versatility make them a go-to choice for general-purpose flanging needs in both commercial and industrial settings.
| Size in Inch | Size in mm | Outer Dia. | Flange Thickness | Hub OD | Flange Length | RF Dia. | RF Height | PCD | Socket Bore | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | ||||||||
| 1/2 | 15 | 95 | 14.3 | 38 | 22 | 34.9 | 7 | 66.7 | 22.2 | 4 | 1/2 | 75 | 5/8 | M14 | 1.3 |
| 3/4 | 20 | 115 | 15.9 | 48 | 25 | 42.9 | 7 | 82.6 | 27.7 | 4 | 5/8 | 90 | 3/4 | M16 | 1.4 |
| 1 | 25 | 125 | 17.5 | 54 | 27 | 50.8 | 7 | 88.9 | 34.5 | 4 | 5/8 | 90 | 3/4 | M16 | 1.8 |
| 1 1/4 | 32 | 135 | 20.7 | 64 | 29 | 63.5 | 7 | 98.4 | 43.2 | 4 | 5/8 | 95 | 3/4 | M16 | 2.3 |
| 1 1/2 | 40 | 155 | 22.3 | 70 | 32 | 73 | 7 | 114.3 | 49.5 | 4 | 3/4 | 110 | 7/8 | M20 | 3.2 |
| 2 | 50 | 165 | 25.4 | 84 | 37 | 92.1 | 7 | 127 | 61.9 | 8 | 5/8 | 110 | 3/4 | M16 | 4.1 |
| 2 1/2 | 65 | 190 | 28.6 | 100 | 41 | 104.8 | 7 | 149.2 | 74.6 | 8 | 3/4 | 120 | 7/8 | M20 | 5.9 |
| 3 | 80 | 210 | 31.8 | 117 | 46 | 127 | 7 | 168.3 | 90.7 | 8 | 3/4 | 125 | 7/8 | M20 | 7.3 |
| 4 | 100 | 275 | 38.1 | 152 | 54 | 157.2 | 7 | 215.9 | 116.1 | 8 | 7/8 | 145 | 1 | M24 | 16.8 |
| 5 | 125 | 330 | 44.5 | 189 | 60 | 185.7 | 7 | 266.7 | 143.8 | 8 | 1 | 165 | 1 1/8 | M27 | 29 |
| 6 | 150 | 355 | 47.7 | 222 | 67 | 215.9 | 7 | 292.1 | 170.7 | 12 | 1 | 170 | 1 1/8 | M27 | 36 |
| 8 | 200 | 420 | 55.6 | 273 | 76 | 269.9 | 7 | 349.2 | 221.5 | 12 | 1 1/8 | 190 | 1 1/4 | M30 | 52 |
| 10 | 250 | 510 | 63.5 | 343 | 86 | 323.8 | 7 | 431.8 | 276.2 | 16 | 1 1/4 | 215 | 1 3/8 | M33 | 77 |
| 12 | 300 | 560 | 66.7 | 400 | 92 | 381 | 7 | 489 | 327 | 20 | 1 1/4 | 220 | 1 3/8 | M33 | 91 |
| 14 | 350 | 605 | 69.9 | 432 | 94 | 412.8 | 7 | 527 | 359.2 | 20 | 1 3/8 | 235 | 1 1/2 | M36 | 105 |
| 16 | 400 | 685 | 76.2 | 495 | 106 | 469.9 | 7 | 603.2 | 410.5 | 20 | 1 1/2 | 255 | 1 5/8 | M39 | 150 |
| 18 | 450 | 745 | 82.6 | 546 | 117 | 533.4 | 7 | 654 | 461.8 | 20 | 1 5/8 | 275 | 1 3/4 | M42 | 182 |
| 20 | 500 | 815 | 88.9 | 610 | 127 | 584.2 | 7 | 723.9 | 513.1 | 24 | 1 5/8 | 285 | 1 3/4 | M42 | 232 |
| 24 | 600 | 940 | 101.6 | 718 | 140 | 692.2 | 7 | 838.2 | 616 | 24 | 1 7/8 | 330 | 2 | M48 | 332 |
| 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 SORF Flanges to meet specific project needs. Our team at Harsh Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@harshflanges.co.in.
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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