Manufacturer of Stainless Steel Forged Flanges in various types such as ASTM A182 F304 Socket Weld Flange, SS 316 Blind Flange, 316L Lap Joint Flanges in India
Flanges are devices that are employed in connecting different piping fixtures efficiently. Stainless Steel Flanges are high-strength components that provide stability to piping modules. They have enhanced resistance to corrosive and reducing media. A Stainless Steel Threaded Flange is designed with threads that align directly to subsequent modules. These flanges are not seen in applications where stress on the fixtures is high. The Stainless Steel Forged Flanges are processed at extreme temperatures giving them superior strength. These flanges have superior surface porosity and enhanced strength. The Stainless Steel Slip On Flange is a versatile grade that is slid on pipe fixtures and welded in place using one or more fillet welds. These flanges are seen in low-pressure and temperature applications. A Stainless Steel Weld Neck Flange is a high-strength module that has a long protruding face or a hub. These flanges provide support and stability to different components during the vigorous flow of fluids and gases. Stainless Steel Blind Flange, on the contrary, is designed without a face type. These flanges are employed to terminate the flow and are usually bolted in place. The SS Flange can be customized as per customer requirements. The Stainless Steel 304 Flanges are designed with an 18/8 chromium and nickel content giving them good resistance to oxidative and corrosive reducers. The Stainless Steel 316 Flanges, on the contrary, have a good content of chromium, nickel as well as molybdenum giving them higher resistance to pitting as well as corrosion and oxidation compared to the 304-grade flanges.
A Stainless Steel Socket Weld Flange is seen in small pipes of high-pressure systems. These flanges are inserted in a socket and welded with a single fillet weld. The Stainless Steel Lap Joint Flanges are designed with a stub end with a lap-joint ring flange. The stub end is butt-welded with the ring to strongly align the mating flange. A Stainless Steel Plate Flange is a circular flat disc that allows it to be bolted to another pipe. These flanges use a gasket to securely hold the plain flange in place. The Stainless Steel Orifice Flange is engineered with a raised or a ring-type joint face. These flanges measure the rate of fluid flow in the system. Stainless Steel Reducing Flange is a robust flange type that is employed in connecting piping fixtures of unequal sizes in the system. We are the Stainless Steel Flanges manufacturers in India who make use of the best raw materials and the latest technology to produce quality assured products.
Looking for a reliable SS Flange manufacturer? We produce all types of Stainless Steel 304 Flanges and AISI 316 Flanges, check online price list and pressure rating
Table of Content
Stainless Steel Flanges Specification
| Materials: | Duplex Steel F55 |
| Size: | DN15mm to DN5,000mm. |
| Process: | Forged |
| Type | Plate, Slip-on, Welding Neck, Blind, Threaded, Socked Weld,LWN,Loose |
| Standard | ANSI/ASME B16.5, GOST, DIN, UNI, EN1092, JIS B2220, API 6A, BS4504, SABA 1123 |
| Connection | RF, FF, RTJ |
| Pressure | 150#-2500#, 5K-40K, PN0.6-PN420, API2000-15000 |
| OD | 15mm-6000mm |
| Packing | Sea-worthy Plywood cases or Pallet with polyethylene film or as customers' request |
| Painting | Yellow paint, anti-rust oil, black paint or zinc coated. |
Price Of Stainless Steel Flanges
Per Kg
FLANGES STAINLESS STEEL SA 182 F317L 150# BLRF
Per Piece
Stainless steel flange for 1-1/2 pipe enclosure
Per Kg
STAINLESS STEEL SA 182 F317 ANSI B16.5 150# SORF
Per Kg
FLANGES STAINLESS STEEL : SW RF, 300#, SS 40S
Per Kg
FLANGES STAINLESS STEEL : WN RF, 150#, SS 10S BORE
Per Piece
BLIND FLANGE RE CLASS 150 B16 5 SS A182 F316
Forged Stainless Steel Flanges Chemical Properties
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Ti | Fe | |
| 304 | min. | 18.0 | 8.0 | |||||||||
| max. | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 | ||||
| 304L | min. | 18.0 | 8.0 | |||||||||
| max. | 0.030 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | ||||
| 304H | min. | 0.04 | 18.0 | 8.0 | ||||||||
| max. | 0.010 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | |||||
| 316 | min. | 16.0 | 2.03.0 | 10.0 | ||||||||
| max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | |||||
| 316L | min. | 16.0 | 2.03.0 | 10.0 | ||||||||
| max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | |||||
| 316TI | 0.08 max | 10.00 14.00 | 2.0 max | 0.045 max | 0.030 max | 16.00 18.00 | 0.75 max | 2.00 3.00 | ||||
| 317 | 0.08 max | 2 max | 1 max | 0.045 max | 0.030 max | 18.00 20.00 | 3.00 4.00 | 57.845 min | ||||
| SS 317L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 18.00 20.00 | 3.00 4.00 | 11.00 15.00 | 57.89 min | |||
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 19.00 | 9.00 12.00 | 0.10 max | 5(C+N) 0.70 max | |||
| SS 321H | 0.04 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 19.00 | 9.00 12.00 | 0.10 max | 4(C+N) 0.70 max | |||
| 347/ 347H | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 20.00 | 9.0013.00 | |||||
| 410 | min. | 11.5 | ||||||||||
| max. | 0.15 | 1.0 | 1.00 | 0.040 | 0.030 | 13.5 | 0.75 | |||||
| 446 | min. | 23.0 | 0.10 | |||||||||
| max. | 0.2 | 1.5 | 0.75 | 0.040 | 0.030 | 30.0 | 0.50 | 0.25 | ||||
| 904L | min. | 19.0 | 4.00 | 23.00 | 0.10 | |||||||
| max. | 0.20 | 2.00 | 1.00 | 0.045 | 0.035 | 23.0 | 5.00 | 28.00 | 0.25 | |||
Stainless Steel Companion Flange Mechanical Properties
| Grade | Elongation | Melting Point | Yield Strength (0.2%Offset) | Density | Tensile Strength |
| 304/ 304L | 35 % | 1400 °C (2550 °F) | Psi 30000 , MPa 205 | 8.0 g/cm3 | Psi 75000 , MPa 515 |
| 304H | 40 % | 1400 °C (2550 °F) | Psi 30000 , MPa 205 | 8.0 g/cm3 | Psi 75000 , MPa 515 |
| 316/ 316H | 35 % | 1400 °C (2550 °F) | Psi 30000 , MPa 205 | 8.0 g/cm3 | Psi 75000 , MPa 515 |
| 317 | 35 % | 1400 °C (2550 °F) | Psi 30000 , MPa 205 | 7.9 g/cm3 | Psi 75000 , MPa 515 |
| 316L | 35 % | 1399 °C (2550 °F) | Psi 30000 , MPa 205 | 8.0 g/cm3 | Psi 75000 , MPa 515 |
| 310 / 310S / 310H | 40 % | 1402 °C (2555 °F) | Psi 30000 , MPa 205 | 7.9 g/cm3 | Psi 75000 , MPa 515 |
| 321 | 35 % | 1457 °C (2650 °F) | Psi 30000 , MPa 205 | 8.0 g/cm3 | Psi 75000 , MPa 515 |
| 904L | 35 % | 1350 °C (2460 °F) | Psi 32000 , MPa 220 | 7.95 g/cm3 | Psi 71000 , MPa 490 |
| 347 | 35 % | 1454 °C (2650 °F) | Psi 30000 , MPa 205 | 8.0 g/cm3 | Psi 75000 , MPa 515 |
Schedule 10 Stainless Steel Flanges Equivalent Grade
| STANDARD | UNS | JIS | EN | AFNOR | WERKSTOFF NR. | BS | GOST |
| 304 | S30400 | SUS 304 | X5CrNi18-10 | Z7CN18‐09 | 1.4301 | 304S31 | 08Х18Н10 |
| 304L | S30403 | SUS 304L | X2CrNi18-9 / X2CrNi19-11 | Z3CN18‐10 | 1.4306 / 1.4307 | 3304S11 | 03Х18Н11 |
| 304H | S30409 | - | - | - | 1.4301 | - | - |
| 310 | S31000 | SUS 310 | X15CrNi25-20 | - | 1.4841 | 310S24 | 20Ch25N20S2 |
| 310S | S31008 | SUS 310S | X8CrNi25-21 | - | 1.4845 | 310S16 | 20Ch23N18 |
| 310H | S31009 | - | - | - | - | - | - |
| 316 | S31600 | SUS 316 | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 | Z7CND17‐11‐02 | 1.4401 / 1.4436 | 316S31 / 316S33 | - |
| 316L | S31603 | SUS 316L | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 | Z3CND17‐11‐02 / Z3CND18‐14‐03 | 1.4404 / 1.4435 | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 |
| 316H | S31609 | - | - | - | 1.4401 | - | - |
| 316Ti | S31635 | SUS 316Ti | X6CrNiMoTi17-12-2 | Z6CNDT17‐123 | 1.4571 | 320S31 | 08Ch17N13M2T |
| 317 | S31700 | SUS 317 | - | - | 1.4449 | - | - |
| 317L | S31703 | SUS 317L | X2CrNiMo18-15-4 | - | 1.4438 | - | - |
| 321 | S32100 | SUS 321 | X6CrNiTi18-10 | - | 1.4541 | - | - |
| 321H | S32109 | SUS 321H | X12CrNiTi18-9 | - | 1.4878 | - | - |
| 347 | S34700 | SUS 347 | X6CrNiNb18-10 | - | 1.4550 | - | 08Ch18N12B |
| 347H | S34709 | SUS 347H | X6CrNiNb18-12 | - | 1.4961 | - | - |
| 904L | N08904 | SUS 904L | X1NiCrMoCu25-20-5 | Z2 NCDU 25-20 | 1.4539 | 904S13 | STS 317J5L |
Types Of Stainless Steel Flanges
Ansi 150 Stainless Steel Flanges
SS Npt Flange
Stainless Steel Loose Flange
Stainless Steel Lap Joint Flanges
3 Inch Stainless Steel Exhaust Flanges
SS Flat Flange
Stainless Steel Vanstone Flanges
Stainless Steel Flange Ansi 150
Stainless Steel Weld Neck Flanges
Stainless Steel Lap Joint Flange
SS Companion Flange
Forged Stainless Steel Flanges
Stainless Steel Slip On Flange
Pn16 Stainless Steel Flanges
SS Flange
Stainless Steel Threaded Pipe Flange
Stainless Steel Forged Flanges
Stainless Slip On Flange
Stainless Steel Exhaust Flanges
Stainless Steel Rtj Flanges
Schedule 10 Stainless Steel Flanges
Stainless Steel Plate Flange
Stainless Steel Api Flanges
Stainless Steel Companion Flange
Stainless Steel Split Flange
Class 125 Stainless Steel Flanges
Stainless Blind Flange
Forged Stainless Flanges
3 Inch Stainless Steel Flange
SS Slip On Flange
SS Weld Neck Flange
SS Puddle Flange
Stainless Steel Blind Flange
Stainless Steel Slip On Flanges
Stainless Steel Threaded Flange
Stainless Steel Reducing Flange
SS Blind Flange
SS Pipe Flange
Stainless steel orifice flanges
Stainless Steel Flanges Pressure And Temperature Ratings
| Temperature °F | 150# | 400# | 1500# | 600# | 300# | 900# | 2500# |
| -20 to 100 | 275 | 960 | 3600 | 1440 | 720 | 2160 | 6000 |
| 200 | 230 | 800 | 3000 | 1200 | 600 | 1800 | 5000 |
| 300 | 205 | 720 | 2700 | 1080 | 540 | 1620 | 4500 |
| 400 | 190 | 660 | 2485 | 995 | 495 | 1490 | 4140 |
| 500 | 170 | 620 | 2330 | 930 | 465 | 1395 | 3880 |
| 600 | 140 | 580 | 2185 | 875 | 435 | 1310 | 3640 |
| 650 | 125 | 575 | 2150 | 860 | 430 | 1290 | 3580 |
| 700 | 110 | 565 | 2125 | 850 | 425 | 1275 | 3540 |
| 750 | 95 | 555 | 2075 | 830 | 415 | 1245 | 3460 |
| 800 | 80 | 540 | 2015 | 805 | 405 | 1210 | 3360 |
| 850 | 65 | 530 | 1980 | 790 | 395 | 1190 | 3300 |
| 900 | 50 | 520 | 1945 | 780 | 390 | 1165 | 3240 |
| 950 | 35 | 510 | 1910 | 765 | 380 | 1145 | 3180 |
| 1000 | 20 | 430 | 1605 | 640 | 320 | 965 | 2675 |
| 1050 | 20 | 410 | 1545 | 615 | 310 | 925 | 2570 |
| 1100 | 20 | 345 | 1285 | 515 | 255 | 770 | 2145 |
| 1150 | 20 | 265 | 995 | 400 | 200 | 595 | 1655 |
| 1200 | 20 | 205 | 770 | 310 | 155 | 465 | 1285 |
| 1250 | 20 | 150 | 565 | 225 | 115 | 340 | 945 |
| 1300 | 20 | 115 | 430 | 170 | 85 | 255 | 715 |
| 1350 | 20 | 80 | 310 | 125 | 60 | 185 | 515 |
| 1400 | 20 | 65 | 240 | 95 | 50 | 145 | 400 |
| 1450 | 15 | 45 | 170 | 70 | 35 | 105 | 285 |
| 1500 | 10 | 35 | 135 | 55 | 25 | 80 | 230 |
Weight Of Stainless Steel Flanges
| NOMINAL SIZE | WEIGHT (KG) | DIMENSIONS | ||||
|---|---|---|---|---|---|---|
| NPS (Inches) | DN (mm) | SOW SW | WN | BLIND | FLANGE OD A MM | FLANGE THICKNESS D MM |
| 1/2 | 15 | 0.7 | 0.9 | 0.8 | 95.3 | 14.2 |
| 3/4 | 20 | 1.3 | 1.5 | 1.3 | 117.3 | 15.7 |
| 1 | 25 | 1.5 | 1.8 | 1.6 | 124.0 | 17.5 |
| 1 1/4 | 32 | 2 | 2.5 | 2.2 | 133.4 | 20.6 |
| 1 1/2 | 40 | 3 | 3.5 | 3.3 | 155.4 | 22.4 |
| 2 | 50 | 3.6 | 4.4 | 4.2 | 165.1 | 25.4 |
| 2 1/2 | 65 | 5.3 | 6.4 | 6.1 | 190.5 | 28.4 |
| 3 | 80 | 7 | 8.5 | 8.4 | 209.6 | 31.8 |
| 3 1/2 | 90 | 8.8 | 10.7 | 11 | 228.6 | 35.1 |
| 4 | 100 | 14.5 | 17.4 | 17.3 | 273.1 | 38.1 |
| 5 | 125 | 24.4 | 29.2 | 29.4 | 330.2 | 44.5 |
| 6 | 150 | 28.7 | 34.9 | 36.1 | 355.6 | 47.8 |
| 8 | 200 | 43.4 | 53.9 | 58.9 | 419.1 | 55.6 |
| 10 | 250 | 70.3 | 86.5 | 97.5 | 508 | 63.5 |
| 12 | 300 | 84.2 | 103.0 | 124 | 558.8 | 66.5 |
| 14 | 350 | 98.7 | 122.0 | 151 | 603.3 | 69.9 |
| 16 | 400 | 142.0 | 170.0 | 214 | 685.8 | 76.2 |
| 18 | 450 | 173.0 | 204.0 | 272 | 743 | 82.6 |
| 20 | 500 | 220.0 | 254.0 | 349.0 | 812.8 | 88.9 |
| 24 | 600 | 312.0 | 358.0 | 533.0 | 939.8 | 101.6 |
Stainless Steel Flange Bolt Torque
| Size in Inch | No. of Bolt | Size in mm | Bolt Stress lb/in2 | Bolt Dia. | Thread Type | Torque lbf.ft. | Torque Nm |
| 1/2 | 4 | 15 | 25,000 | ½” | UNC | 22 | 30 |
| 3/4 | 4 | 20 | 30,000 | ½” | UNC | 26 | 36 |
| 1 | 4 | 35 | 33,000 | ½” | UNC | 29 | 39 |
| 1 ½ | 4 | 40 | 50,000 | ½” | UNC | 44 | 60 |
| 2 | 4 | 50 | 50,000 | 5/8” | UNC | 86 | 117 |
| 3 | 4 | 80 | 50,000 | 5/8” | UNC | 86 | 117 |
| 4 | 8 | 100 | 40,000 | 5/8” | UNC | 69 | 93 |
| 6 | 8 | 150 | 45,000 | ¾” | UNC | 137 | 185 |
| 8 | 8 | 200 | 45,000 | ¾” | UNC | 137 | 185 |
| 10 | 12 | 250 | 40,000 | 7/8” | UNC | 194 | 263 |
| 12 | 12 | 300 | 40,000 | 7/8” | UNC | 194 | 263 |
| 14 | 12 | 350 | 41,000 | 1” | UN8 | 296 | 401 |
| 16 | 16 | 400 | 40,000 | 1” | UN8 | 289 | 392 |
| 18 | 16 | 450 | 40,000 | 1 1/8” | UN8 | 421 | 571 |
| 20 | 20 | 500 | 40,000 | 1 1/8” | UN8 | 421 | 571 |
| 24 | 20 | 600 | 40,000 | 1 ¼” | UN8 | 588 | 797 |
Stainless Steel Flanges Dimensions
| Nominal Size | Outside Diameter (OD) | Min. Thickness (T) | RF Dia. (R) | No. of Bolt Holes | Diameter of Holes | Bolt Circle (BC) | SO Bore ID (SB) | WN Bore ID (WB) | Dia. Hub Base (HB) | Dia. of Hub Top (HT) | SO LTH (SL) | WN LTH (WL) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1⁄2 | 3.75 | 0.50 | 1.38 | 4 | 0.63 | 2.62 | 0.88 | 0.62 | 1.50 | 0.84 | 0.81 | 2.00 |
| 3⁄4 | 4.62 | 0.56 | 1.69 | 4 | 0.75 | 3.25 | 1.09 | 0.82 | 1.88 | 1.05 | 0.94 | 2.19 |
| 1 | 4.88 | 0.62 | 2.00 | 4 | 0.75 | 3.50 | 1.36 | 1.05 | 2.12 | 1.32 | 1.00 | 2.38 |
| 11⁄4 | 5.25 | 0.69 | 2.50 | 4 | 0.75 | 3.88 | 1.70 | 1.38 | 2.50 | 1.66 | 1.00 | 2.50 |
| 11⁄2 | 6.12 | 0.75 | 2.88 | 4 | 0.88 | 4.50 | 1.95 | 1.61 | 2.75 | 1.90 | 1.13 | 2.63 |
| 2 | 6.50 | 0.81 | 3.62 | 8 | 0.75 | 5.00 | 2.44 | 2.07 | 3.31 | 2.38 | 1.25 | 2.69 |
| 21⁄2 | 7.50 | 0.94 | 4.12 | 8 | 0.88 | 5.88 | 2.94 | 2.47 | 3.94 | 2.88 | 1.44 | 2.94 |
| 3 | 8.25 | 1.06 | 5.00 | 8 | 0.88 | 6.62 | 3.57 | 3.07 | 4.62 | 3.50 | 1.63 | 3.06 |
| 31⁄2 | 9.00 | 1.12 | 5.50 | 8 | 0.88 | 7.25 | 4.07 | 3.55 | 5.25 | 4.00 | 1.69 | 3.13 |
| 4 | 10.00 | 1.19 | 6.19 | 8 | 0.88 | 7.88 | 4.57 | 4.03 | 5.75 | 4.50 | 1.82 | 3.32 |
| 5 | 11.00 | 1.31 | 7.31 | 8 | 0.88 | 9.25 | 5.66 | 5.05 | 7.00 | 5.56 | 1.94 | 3.82 |
| 6 | 12.50 | 1.38 | 8.50 | 12 | 0.88 | 10.62 | 6.72 | 6.07 | 8.12 | 6.63 | 2.00 | 3.82 |
| 8 | 15.00 | 1.56 | 10.62 | 12 | 1.00 | 13.00 | 8.72 | 7.98 | 10.25 | 8.63 | 2.38 | 4.32 |
| 10 | 17.50 | 1.81 | 12.75 | 16 | 1.12 | 15.25 | 10.88 | 10.02 | 12.62 | 10.75 | 2.56 | 4.56 |
| 12 | 20.50 | 1.94 | 15.00 | 16 | 1.25 | 17.75 | 12.88 | 12.00 | 14.75 | 12.75 | 2.82 | 5.06 |
| 14 | 23.00 | 2.06 | 16.25 | 20 | 1.25 | 20.25 | 14.14 | 13.25 | 16.75 | 14.00 | 2.94 | 5.56 |
| 16 | 25.50 | 2.19 | 18.50 | 20 | 1.38 | 22.50 | 16.16 | 15.25 | 19.00 | 16.00 | 3.19 | 5.69 |
| 18 | 28.00 | 2.31 | 21.00 | 24 | 1.38 | 24.75 | 18.18 | 17.25 | 21.00 | 18.00 | 3.44 | 6.19 |
| 20 | 30.50 | 2.44 | 23.12 | 24 | 1.38 | 27.00 | 20.20 | 19.25 | 23.12 | 20.00 | 3.69 | 6.32 |
| 22 | 33.00 | 2.57 | 25.25 | 24 | 1.63 | 29.25 | 22.22 | 21.25 | 25.25 | 22.00 | 3.93 | 6.43 |
| 24 | 36.00 | 2.69 | 27.62 | 24 | 1.63 | 32.00 | 24.25 | 23.25 | 27.62 | 24.00 | 4.13 | 6.56 |
Stainless Steel Slip On Flange Dimensions
| Size in Inch | Size in mm | PCD | Outer Dia. | Flange Length | RF Dia. | Hub OD | Flange Thickness | RF Height | Socket Bore | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size | Weight in kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| G | A | D | E | C | B | F | H | ||||||||
| 1/2 | 15 | 66.7 | 95 | 22 | 34.9 | 38 | 14.3 | 7 | 22.2 | 4 | 1/2 | 75 | 5/8 | M14 | 1.3 |
| 3/4 | 20 | 82.6 | 115 | 25 | 42.9 | 48 | 15.9 | 7 | 27.7 | 4 | 5/8 | 90 | 3/4 | M16 | 1.4 |
| 1 | 25 | 88.9 | 125 | 27 | 50.8 | 54 | 17.5 | 7 | 34.5 | 4 | 5/8 | 90 | 3/4 | M16 | 1.8 |
| 1 1/4 | 32 | 98.4 | 135 | 29 | 63.5 | 64 | 20.7 | 7 | 43.2 | 4 | 5/8 | 95 | 3/4 | M16 | 2.3 |
| 1 1/2 | 40 | 114.3 | 155 | 32 | 73 | 70 | 22.3 | 7 | 49.5 | 4 | 3/4 | 110 | 7/8 | M20 | 3.2 |
| 2 | 50 | 127 | 165 | 37 | 92.1 | 84 | 25.4 | 7 | 61.9 | 8 | 5/8 | 110 | 3/4 | M16 | 4.1 |
| 2 1/2 | 65 | 149.2 | 190 | 41 | 104.8 | 100 | 28.6 | 7 | 74.6 | 8 | 3/4 | 120 | 7/8 | M20 | 5.9 |
| 3 | 80 | 168.3 | 210 | 46 | 127 | 117 | 31.8 | 7 | 90.7 | 8 | 3/4 | 125 | 7/8 | M20 | 7.3 |
| 4 | 100 | 215.9 | 275 | 54 | 157.2 | 152 | 38.1 | 7 | 116.1 | 8 | 7/8 | 145 | 1 | M24 | 16.8 |
| 5 | 125 | 266.7 | 330 | 60 | 185.7 | 189 | 44.5 | 7 | 143.8 | 8 | 1 | 165 | 1 1/8 | M27 | 29 |
| 6 | 150 | 292.1 | 355 | 67 | 215.9 | 222 | 47.7 | 7 | 170.7 | 12 | 1 | 170 | 1 1/8 | M27 | 36 |
| 8 | 200 | 349.2 | 420 | 76 | 269.9 | 273 | 55.6 | 7 | 221.5 | 12 | 1 1/8 | 190 | 1 1/4 | M30 | 52 |
| 10 | 250 | 431.8 | 510 | 86 | 323.8 | 343 | 63.5 | 7 | 276.2 | 16 | 1 1/4 | 215 | 1 3/8 | M33 | 77 |
| 12 | 300 | 489 | 560 | 92 | 381 | 400 | 66.7 | 7 | 327 | 20 | 1 1/4 | 220 | 1 3/8 | M33 | 91 |
| 14 | 350 | 527 | 605 | 94 | 412.8 | 432 | 69.9 | 7 | 359.2 | 20 | 1 3/8 | 235 | 1 1/2 | M36 | 105 |
| 16 | 400 | 603.2 | 685 | 106 | 469.9 | 495 | 76.2 | 7 | 410.5 | 20 | 1 1/2 | 255 | 1 5/8 | M39 | 150 |
| 18 | 450 | 654 | 745 | 117 | 533.4 | 546 | 82.6 | 7 | 461.8 | 20 | 1 5/8 | 275 | 1 3/4 | M42 | 182 |
| 20 | 500 | 723.9 | 815 | 127 | 584.2 | 610 | 88.9 | 7 | 513.1 | 24 | 1 5/8 | 285 | 1 3/4 | M42 | 232 |
| 24 | 600 | 838.2 | 940 | 140 | 692.2 | 718 | 101.6 | 7 | 616 | 24 | 1 7/8 | 330 | 2 | M48 | 332 |
Stainless Steel Slip On Flange Weight
| Nominal Pipe Size | Weight (Slip on) |
| ½ | 1 |
| ¾ | 2 |
| 1 | 2 |
| 1¼ | 3 |
| 1½ | 3 |
| 2 | 5 |
| 2½ | 8 |
| 3 | 9 |
| 3½ | 11 |
| 4 | 13 |
| 5 | 15 |
| 6 | 19 |
| 8 | 30 |
| 10 | 43 |
| 12 | 64 |
| 14 | 90 |
| 16 | 106 |
| 18 | 130 |
| 20 | 165 |
| 22 | 185 |
| 24 | 220 |
SS Blind Flange Dimensions
| FLANGE NPS | Outside Diameter | Raised Face (R) | Raised Face (RF) | Bolt Hole (B) | Flat Face Thickness (T2) | Raised Face Thickness (T) | Bolt Circle (BC) | No. of Bolt Holes |
|---|---|---|---|---|---|---|---|---|
| 1/2" | 3.75" | 1.38" | .063" | 0.62" | 0.50" | 0.56" | 2.62" | 4 |
| 3/4" | 4.62" | 1.69" | .063" | 0.75" | .056" | 0.62" | 3.25" | 4 |
| 1" | 4.88" | 2.00" | .063" | 0.75" | 0.63" | 0.69" | 3.50" | 4 |
| 1-1/4" | 5.25" | 2.50" | .063" | 0.75" | 0.69" | 0.75" | 3.88" | 4 |
| 1-1/2" | 6.12" | 2.88" | .063" | 0.88" | 0.75" | 0.81" | 4.50" | 4 |
| 2" | 6.50" | 3.62" | .063" | 0.75" | 0.82" | 0.88" | 5.00" | 8 |
| 2-1/2" | 7.50" | 4.12" | .063" | 0.88" | 0.94" | 1.00" | 5.88" | 8 |
| 3" | 8.25" | 5.00" | .063" | 0.88" | 1.06" | 1.12" | 6.62" | 8 |
| 3-1/2" | 9.00" | 5.50" | .063" | 0.88" | 1.13" | 1.19" | 7.25" | 8 |
| 4" | 10.00" | 6.19" | .063" | 0.88" | 1.19" | 1.25" | 7.88" | 8 |
| 5" | 11.00" | 7.31" | .063" | 0.88" | 1.32" | 1.38" | 9.25" | 8 |
| 6" | 12.50" | 8.50" | .063" | 0.88" | 1.38" | 1.44" | 10.62" | 12 |
| 8" | 15.00" | 10.62" | .063" | 1.00" | 1.56" | 1.62" | 13.00" | 12 |
| 10" | 17.50" | 12.75" | .063" | 1.12" | 1.82" | 1.88" | 15.25" | 16 |
| 12" | 20.50" | 15.00" | .063" | 1.25" | 1.94" | 2.00" | 17.75" | 16 |
| 14" | 23.00" | 16.25" | .063" | 1.25" | 2.06" | 2.12" | 20.25" | 20 |
| 16" | 25.50" | 18.50" | .063" | 1.38" | 2.19" | 2.25" | 22.50" | 20 |
| 18" | 28.00" | 21.00" | .063" | 1.38" | 2.32" | 2.38" | 24.75" | 24 |
| 20" | 30.50" | 23.00" | .063" | 1.38" | 2.44" | 2.50" | 27.00" | 24 |
| 22" | 33.00" | 25.25" | .063" | 1.63" | 2.57" | 2.63" | 29.25" | 24 |
| 24" | 36.00" | 27.25" | .063" | 1.62" | 2.69" | 2.75" | 32.00" | 24 |
SS Blind Flange Weight
| Nominal Pipe Size | Weight (Blind) |
|---|---|
| ½ | 2 |
| ¾ | 2 |
| 1 | 2 |
| 1¼ | 3 |
| 1½ | 4 |
| 2 | 5 |
| 2½ | 7 |
| 3 | 9 |
| 3½ | 13 |
| 4 | 17 |
| 5 | 20 |
| 6 | 27 |
| 8 | 47 |
| 10 | 70 |
| 12 | 123 |
| 14 | 140 |
| 16 | 180 |
| 18 | 220 |
| 20 | 285 |
| 22 | 355 |
| 24 | 430 |
Stainless Steel Flanges Standard
Stainless Steel Flanges Sizes
| Nominal Pipe Size NPS (inches) | Diameter of Flange (inches) | Diameter of Bolts (inches) | No. of Bolts | Bolt Circle (inches) |
|---|---|---|---|---|
| 1/4 | 3-3/8 | 1/2 | 4 | 2-1/4 |
| 1/2 | 3-3/4 | 1/2 | 4 | 2-5/8 |
| 3/4 | 4-5/8 | 5/8 | 4 | 3-1/4 |
| 1 | 4-7/8 | 5/8 | 4 | 3-1/2 |
| 1-1/4 | 5-1/4 | 5/8 | 4 | 3-7/8 |
| 1-1/2 | 6-1/8 | 3/4 | 4 | 4-1/2 |
| 2 | 6-1/2 | 5/8 | 8 | 5 |
| 2-1/2 | 7-1/2 | 3/4 | 8 | 5-7/8 |
| 3 | 8-1/4 | 3/4 | 8 | 6-5/8 |
| 3-1/2 | 9 | 3/4 | 8 | 7-1/4 |
| 4 | 10 | 3/4 | 8 | 7-7/8 |
| 5 | 11 | 3/4 | 8 | 9-1/4 |
| 6 | 12-1/2 | 3/4 | 12 | 10-5/8 |
| 8 | 15 | 7/8 | 12 | 13 |
| 10 | 17-1/2 | 1 | 16 | 15-1/4 |
| 12 | 20-1/2 | 1-1/8 | 16 | 17-3/4 |
| 14 | 23 | 1-1/8 | 20 | 20-1/4 |
| 16 | 25-1/2 | 1-1/4 | 20 | 22-1/2 |
| 18 | 28 | 1-1/4 | 24 | 24-3/4 |
| 20 | 30-1/2 | 1-1/4 | 24 | 27 |
| 24 | 36 | 1-1/2 | 24 | 32 |
SS Flange PCD Chart
| Pipe NB | Bolt PCD | No. of Bolts | Bolt Size | Flange OD |
| 1/2" | 2 5/8" | 4 | 1/2" | 3 3/4" |
| 1" | 3 1/2" | 4 | 5/8" | 4 7/8" |
| 2" | 5" | 8 | 5/8" | 6 1/2" |
| 4" | 7 7/8" | 8 | 3/4" | 10" |
| 6" | 10 5/8" | 12 | 3/4" | 12 1/2" |
| 8" | 13" | 12 | 7/8" | 15" |
| 10" | 15 1/4" | 16 | 1" | 17 1/2" |
| 12" | 17 3/4" | 16 | 1 1/8" | 20 1/2" |
| 14" | 20 1/4" | 20 | 1 1/8" | 23" |
Stainless Steel Flange Torque Specs
| Flange Size | Recommended Torque (Ft. Lbs.) |
|---|---|
| 1/2 - 1 1/12 | 10 - 15 |
| 2 - 4 | 20 - 30 |
| 6 -8 | 33 - 50 |
| 10 | 53 - 75 |
| 12 | 80 - 110 |
| 14 - 24 | 110 |
Weights & Dimensions 150# Stainless Steel Flanges
| Size | O.D. | Ø B.H. | Ø B.H.C. | # B.H. | RH (RAD) | THK 1 | THK 2 | H.D. | Ø RF | I.D. | Weight Lbs |
| 0.5 | 3.50 | 0.630 | 2.38 | 4 | 0.188 | 0.440 | 0.630 | 1.190 | 1.375 | 0.88 | 1.2 |
| 0.75 | 3.88 | 0.630 | 2.75 | 4 | 0.188 | 0.500 | 0.630 | 1.500 | 1.688 | 1.09 | 1.6 |
| 1 | 4.25 | 0.630 | 3.13 | 4 | 0.188 | 0.563 | 0.690 | 1.940 | 2.000 | 1.36 | 2.0 |
| 1.25 | 4.63 | 0.630 | 3.50 | 4 | 0.188 | 0.630 | 0.813 | 2.313 | 2.500 | 1.70 | 3.0 |
| 1.5 | 5.00 | 0.630 | 3.88 | 4 | 0.188 | 0.690 | 0.880 | 2.563 | 2.875 | 1.95 | 3.0 |
| 2 | 6.00 | 0.750 | 4.75 | 4 | 0.188 | 0.750 | 1.000 | 3.063 | 3.625 | 2.44 | 5.0 |
| 2.5 | 7.00 | 0.750 | 5.50 | 4 | 0.188 | 0.880 | 1.13 | 3.563 | 4.125 | 2.94 | 8.0 |
| 3 | 7.50 | 0.750 | 6.00 | 4 | 0.188 | 0.940 | 1.190 | 4.250 | 5.000 | 3.57 | 9.0 |
| 3.5 | 8.50 | 0.750 | 7.00 | 8 | 0.188 | 0.940 | 1.250 | 4.810 | 5.500 | 4.07 | 11.0 |
| 4 | 9.00 | 0.750 | 7.50 | 8 | 0.188 | 0.940 | 1.313 | 5.312 | 6.188 | 4.57 | 13.0 |
| 5 | 10.00 | 0.875 | 8.50 | 8 | 0.188 | 0.940 | 1.440 | 6.440 | 7.313 | 5.66 | 15.0 |
| 6 | 11.00 | 0.875 | 9.50 | 8 | 0.250 | 1.000 | 1.563 | 7.563 | 8.500 | 6.72 | 17.0 |
| 8 | 13.50 | 0.875 | 11.75 | 8 | 0.250 | 1.130 | 1.750 | 9.690 | 10.625 | 8.72 | 28.0 |
| 10 | 16.00 | 1.000 | 14.25 | 12 | 0.250 | 1.190 | 1.940 | 12.000 | 12.750 | 10.88 | 40.0 |
| 12 | 19.00 | 1.000 | 17.00 | 12 | 0.313 | 1.250 | 2.190 | 14.380 | 15.000 | 12.88 | 61.0 |
| 14 | 21.00 | 1.125 | 18.75 | 12 | 0.313 | 1.380 | 2.250 | 15.750 | 16.250 | 14.14 | 83.0 |
| 16 | 23.50 | 1.125 | 21.25 | 16 | 0.313 | 1.440 | 2.500 | 18.000 | 18.500 | 16.16 | 106.0 |
| 18 | 25.00 | 1.250 | 22.75 | 16 | 0.313 | 1.563 | 2.690 | 19.880 | 21.000 | 18.18 | 109.0 |
| 20 | 27.50 | 1.250 | 25.00 | 20 | 0.313 | 1.690 | 2.880 | 22.000 | 23.000 | 20.20 | 148.0 |
| 22 | 29.50 | 1.375 | 27.25 | 20 | 0.313 | 1.840 | 3.130 | 24.250 | 25.250 | 22.22 | 174.0 |
| 24 | 32.00 | 1.375 | 29.50 | 20 | 0.313 | 1.880 | 3.250 | 26.130 | 27.250 | 24.25 | 204.0 |
Stainless Steel Flanges Manufacturing Process
Flanges are manufactured in a variety of techniques, including cast, cut, and forged procedures.
Cast manufacturing method
Molten metal is poured into a mould to make the required shape in cast manufacturing method. The mould is opened and the casting is extracted once the liquid metal has hardened, then machined to the required dimensions and surface polish. Casting flanges are less expensive to create, and the manufacturing process produces less waste. Due to the less compact internal structure, there may be more faults than with forged flanges. As a result, cast flanges in high-pressure or high-temperature applications may be more prone to failure.
Cut Flange Production Method
The flattening of steel metal stock with rollers to thin the material until it achieves the desired plate thickness is the first step in the cut flange (or plate flange) manufacturing process. The flange is then cut to the proper Outer Diameter (OD) and Inner Diameter (ID) using a torch, laser, or water jet (excluding blind flanges, which have no centre bore and do not require an ID).
The flange is further machined to exact specifications, with bolt holes and appropriate serrations cut. The cut manufacturing method produces flanges at a lower cost, but there is more scrap material waste. Cut flanges are often weaker than flanges made using other methods.
Forged Flange Production Method
Heating steel billets, slabs, or other metal stock, then compressing the material with a power hammer, press, or die to shape the flange from a solid state, is how forged flanges are made. For increased strength, this method creates a continuous grain flow. After forging, the flange is machined and polished to the required dimensions. Forged flanges are more resistant to wear, although they are more expensive to manufacture.
SS Flange HSN Code
| HSN Code | 73072100 | FLANGES OF STAINLESS STEEL |
SS Flange Welding
The thickness and finish of the Stainless Steel Flanges, as well as the intended purpose of the finished product, all influence the welding process. While there are various methods for welding stainless steel, three are the most widely used methods.
PN16 Stainless Steel Flange Dimensions
| DN | A | E | C | B | D | F |
| 10 | 90 | 17.2 | 40 | 60 | 2 | 28 |
| 15 | 95 | 21.3 | 45 | 65 | 2 | 32 |
| 20 | 105 | 26.9 | 58 | 75 | 2.3 | 40 |
| 25 | 115 | 33.7 | 68 | 85 | 2.6 | 46 |
| 32 | 140 | 42.4 | 78 | 100 | 2.6 | 56 |
| 40 | 150 | 48.3 | 88 | 110 | 2.6 | 64 |
| 50 | 165 | 60.3 | 102 | 125 | 2.9 | 74 |
| 65 | 185 | 76.1 | 122 | 145 | 2.9 | 92 |
| 80 | 200 | 88.9 | 138 | 160 | 3.2 | 105 |
| 100 | 220 | 114.3 | 158 | 180 | 3.6 | 131 |
| 125 | 250 | 139.7 | 188 | 210 | 4 | 156 |
| 150 | 285 | 168.3 | 212 | 240 | 4.5 | 184 |
| 200 | 340 | 219.1 | 268 | 295 | 6.3 | 235 |
| 250 | 405 | 273 | 320 | 355 | 6.3 | 292 |
| 300 | 460 | 323.9 | 378 | 410 | 7.1 | 344 |
| 350 | 520 | 355.6 | 438 | 470 | 8 | 390 |
| 400 | 580 | 406.4 | 490 | 525 | 8 | 445 |
| 450 | 640 | 457 | 550 | 585 | 8 | 490 |
| 500 | 715 | 508 | 610 | 650 | 8 | 548 |
| 600 | 840 | 610 | 725 | 770 | 10 | 670 |
| 700 | 910 | 711 | 795 | 840 | 10 | 755 |
| 800 | 1025 | 813 | 900 | 950 | 12.5 | 855 |
| 900 | 1125 | 914 | 1000 | 1050 | 12.5 | 955 |
| 1000 | 1255 | 1016 | 1115 | 1170 | 12.5 | 1058 |
| 1200 | 1485 | 1219 | 1330 | 1390 | 14.2 | 1262 |
| 1400 | 1685 | 1422 | 1530 | 1590 | 16 | 1465 |
| 1600 | 1930 | 1626 | 1750 | 1820 | 17.5 | 1668 |
| 1800 | 2130 | 1829 | 1950 | 2020 | 20 | 1870 |
| 2000 | 2345 | 2032 | 2150 | 2230 | 22 | 2072 |