Blind Flanges
Inconel 625 Blind Flanges, ASME SA182 Duplex 2205 Blind Flanges, UNS S30400 Blind Flanges, UNS N06625 Blind Flanges, 2507 Super Duplex Blind Flanges, UNS N08904 Blind Flanges.
About Blind Flanges
Blind flanges have several uses in energy, petrochemical, chemical processing, water treatment, and other sectors. They are frequently employed in piping systems to allow for inspections, repairs, and alterations by isolating specific pipeline sections. When the future extension of the system is expected, blind flanges are used so that new pipes can be connected with minimal interference to the current system.
The blind flange is more popular than other options due to its many advantages. Blind flanges guarantee that the system is leak-free by establishing a tight seal. They come in handy when it’s necessary to cut down the pipeline’s flow temporarily or permanently. The pipeline can be inspected or cleaned quickly and easily, thanks to blind flanges.
Blind flanges can only serve their intended purpose if they are installed correctly. Align the flange with the pipe end and bolt it securely using the recommended torque values. Using suitable gaskets is essential for a secure and leak-free seal. Blind flanges need to be inspected and maintained frequently to address any signs of damage, corrosion, or wear before they jeopardize the flange’s performance.
Blind flanges are an efficient and dependable method of sealing pipe ends in various industrial and commercial applications. They may be used with various piping systems because of their adaptability, durability, and conformity to industry standards. Engineers and professionals can make better selections when choosing flange components by learning about the characteristics, uses, and advantages of blind flanges.
WRN 2.4856 Blind Flanges Manufacturer, UNS N06625 Blind Flanges Exporter, 304 Stainless Steel Blind Flanges Stockist, 2507 Super Duplex Blind Flanges Supplier.
Specification of Blind Flanges
| 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 |
| Size Chart | 1/2" (15 NB) to 48" (1200NB) DN10~DN5000 |
| Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 Blind Flange |
| Pressure Rating ANSI | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS Blind Flange |
| UNI | 6Bar 10Bar 16Bar 25Bar 40Bar Blind Flange |
| JIS | 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K Blind Flange |
| Coating | Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized Blind Flange |
| EN | 6Bar 10Bar 16Bar 25Bar 40Bar Blind Flange |
| Most common types of Blind Flange | Forged / Threaded / Screwed / Plate |
| Connect Type/ Flange Face Type | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove |
Dimensions Standard Of Blind Flanges
Class 150 Blind Flange Dimensions
| Normal Diam. | O.D. Flange | Thk. Of Flange Min | Diameter of Raised Face | Diam. of Bolt Circle | Diam. of Bolt Holes | Number of Bolts | Diam. of Bolts (inch) | Approx. Weight | ||
| inch | dn | O | C | G | BC | BH | BN | BD | KG | LB |
| 1/2″ | 15 | 89.00 | 11.20 | 35.10 | 60.50 | 15.80 | 4 | 1/2″ | 0.5 | 1.1 |
| 3/4″ | 20 | 98.50 | 12.70 | 42.90 | 69.90 | 15.80 | 4 | 1/2″ | 0.8 | 1.8 |
| 1″ | 25 | 108.00 | 14.20 | 50.80 | 79.30 | 15.80 | 4 | 1/2″ | 0.9 | 2 |
| 1-1/4″ | 32 | 117.50 | 15.70 | 63.50 | 88.90 | 15.80 | 4 | 1/2″ | 1.3 | 2.9 |
| 1-1/2″ | 40 | 127.00 | 17.50 | 73.20 | 98.60 | 15.80 | 4 | 1/2″ | 1.6 | 3.5 |
| 2″ | 50 | 152.50 | 19.10 | 91.90 | 120.70 | 19.10 | 4 | 5/8″ | 2.6 | 5.7 |
| 2-1/2″ | 65 | 178.00 | 22.40 | 104.60 | 139.70 | 19.10 | 4 | 5/8″ | 4.1 | 9 |
| 3″ | 80 | 190.50 | 23.90 | 127.00 | 152.40 | 19.10 | 4 | 5/8″ | 5..1 | 11.2 |
| 3-1/2″ | 90 | 216.00 | 23.90 | 139.70 | 177.80 | 19.10 | 8 | 5/8″ | 6.5 | 14.3 |
| 4″ | 100 | 228.50 | 23.90 | 157.20 | 190.50 | 19.10 | 8 | 5/8″ | 7.5 | 16.5 |
| 5″ | 125 | 254.00 | 23.90 | 185.70 | 215.90 | 22.40 | 8 | 3/4″ | 9.2 | 20.3 |
| 6″ | 150 | 279.50 | 25.40 | 215.90 | 241.30 | 22.40 | 8 | 3/4″ | 11.8 | 26 |
| 8″ | 200 | 343.00 | 28.40 | 269.70 | 298.50 | 22.40 | 8 | 3/4″ | 20.4 | 45 |
| 10″ | 250 | 406.50 | 30.20 | 323.90 | 362.00 | 25.40 | 12 | 7/8″ | 31 | 68 |
| 12″ | 300 | 482.50 | 31.80 | 381.00 | 431.80 | 25.40 | 12 | 7/8″ | 47 | 103 |
| 14″ | 350 | 533.50 | 35.10 | 412.80 | 476.30 | 28.50 | 12 | 1″ | 60 | 132 |
| 16″ | 400 | 597.00 | 36.60 | 469.90 | 539.80 | 28.50 | 16 | 1″ | 81 | 178 |
| 18″ | 450 | 635.00 | 39.60 | 533.40 | 577.90 | 31.80 | 16 | 1 1/8″ | 93 | 205 |
| 20″ | 500 | 698.50 | 42.90 | 584.20 | 635.00 | 31.80 | 20 | 1 1/8″ | 127 | 280 |
| 24″ | 600 | 813.00 | 47.80 | 692.20 | 749.30 | 35.10 | 20 | 1 1/4″ | 190 | 419 |
Class 300 Blind Flange Dimensions
| Normal Diam. | O.D. Flange | Thk. Of Flange Min | Diameter of Raised Face | Diam. of Bolt Circle | Diam. of Bolt Holes | Number of Bolts | Diam. of Bolts (inch) | Approx. Weight | ||
| inch | dn | O | C | G | BC | BH | BN | BD | KG/PCS | LB/PCS |
| 1/2″ | 15 | 95.5 | 14.2 | 35.1 | 66.5 | 15.7 | 4 | 1/2″ | 0.8 | 1.8 |
| 3/4″ | 20 | 117. 5 | 15.7 | 42.9 | 82.6 | 19.1 | 4 | 5/8″ | 1.2 | 2.6 |
| 1″ | 25 | 124. 0 | 17.5 | 50.8 | 88.9 | 19.1 | 4 | 5/8″ | 1.5 | 3.3 |
| 1-1/4″ | 32 | 133. 5 | 19.1 | 63.5 | 98.6 | 19.1 | 4 | 5/8″ | 2 | 4.4 |
| 1-1/2″ | 40 | 155. 5 | 20.6 | 73.2 | 114.3 | 22.4 | 4 | 5/8″ | 2.9 | 6.4 |
| 2″ | 50 | 165. 0 | 22.4 | 91.9 | 127 | 19.1 | 8 | 5/8″ | 3.5 | 7.7 |
| 2-1/2″ | 65 | 190. 5 | 25.4 | 104.6 | 149.4 | 22.4 | 8 | 3/4″ | 5.3 | 11.7 |
| 3″ | 80 | 209. 5 | 28.4 | 127 | 168.1 | 22.4 | 8 | 3/4″ | 7.2 | 15.9 |
| 3-1/2″ | 90 | 228. 5 | 30.2 | 139.7 | 184.2 | 22.4 | 8 | 3/4″ | 9.2 | 20.3 |
| 4″ | 100 | 254. 0 | 31.8 | 157.2 | 200.2 | 22.4 | 8 | 3/4″ | 12.2 | 26.8 |
| 5″ | 125 | 279. 5 | 35.1 | 185.7 | 235 | 22.4 | 8 | 3/4″ | 16 | 35.2 |
| 6″ | 150 | 317. 5 | 36.6 | 215.9 | 269.7 | 22.4 | 12 | 3/4″ | 22 | 48.4 |
| 8″ | 200 | 381. 0 | 41.1 | 269.7 | 330.2 | 25.4 | 12 | 7/8″ | 36 | 79.5 |
| 10″ | 250 | 444. 5 | 47.8 | 323.9 | 387.4 | 28.4 | 16 | 1″ | 55 | 121 |
| 12″ | 300 | 520. 5 | 50.8 | 381 | 450.9 | 31.8 | 16 | 1 1/8″ | 82.5 | 182 |
| 14″ | 350 | 584. 0 | 53.8 | 412.8 | 514..4 | 31.8 | 20 | 1 1/8″ | 108 | 238 |
| 16″ | 400 | 647. 5 | 57.2 | 469.9 | 571.5 | 35.1 | 20 | 1 1/4″ | 139 | 306 |
| 18″ | 450 | 711. 0 | 60.5 | 533.4 | 628.7 | 35.1 | 24 | 1 1/4″ | 178 | 392 |
| 20″ | 500 | 774. 5 | 63.5 | 584.2 | 685.8 | 35.1 | 24 | 1 1/4″ | 228 | 503 |
| 24″ | 600 | 914. 5 | 69.9 | 692.2 | 812.8 | 41.1 | 24 | 1 1/2″ | 350 | 772 |
Class 600 Blind Flange Dimensions
| Normal Diam. | O.D. Flange | Thk. Of Flange Min | Diameter of Raised Face | Diam. of Bolt Circle | Diam. of Bolt Holes | Number of Bolts | Diam. of Bolts (inch) | Approx. Weight | ||
| inch | dn | O | C | G | BC | BH | BN | BD | KG/PCS | LB/PCS |
| 1/2″ | 15 | 95.5 | 14.2 | 35.1 | 66.5 | 15.7 | 4 | 1/2″ | 0.8 | 1.8 |
| 3/4″ | 20 | 117. 5 | 15.7 | 42.9 | 82.6 | 19.1 | 4 | 5/8″ | 1.4 | 3.1 |
| 1″ | 25 | 124. 0 | 17.5 | 50.8 | 88.9 | 19.1 | 4 | 5/8″ | 1.7 | 3.7 |
| 1-1/4″ | 32 | 133. 5 | 20.6 | 63.5 | 98.6 | 19.1 | 4 | 5/8″ | 2.4 | 5.3 |
| 1-1/2″ | 40 | 155. 5 | 22.4 | 73.2 | 114.3 | 22.4 | 4 | 3/4″ | 3.4 | 7.5 |
| 2″ | 50 | 165. 0 | 25.4 | 91.9 | 127 | 19.1 | 8 | 5/8″ | 4.4 | 9.7 |
| 2-1/2″ | 65 | 190. 5 | 28.4 | 104.6 | 149.4 | 22.4 | 8 | 3/4″ | 6.8 | 15 |
| 3″ | 80 | 209. 5 | 31.8 | 127 | 168.1 | 22.4 | 8 | 3/4″ | 8.9 | 19.7 |
| 3-1/2″ | 90 | 228. 5 | 35.1 | 139.7 | 184.2 | 25.4 | 8 | 7/8″ | 12.7 | 28 |
| 4″ | 100 | 273. 0 | 38.1 | 157.2 | 215.9 | 25.4 | 8 | 7/8″ | 18.6 | 41 |
| 5″ | 125 | 330. 0 | 44.5 | 185.7 | 266.7 | 28.4 | 8 | 1″ | 30.8 | 68 |
| 6″ | 150 | 355. 5 | 47.8 | 215.9 | 292.1 | 28.4 | 12 | 1″ | 38 | 83.6 |
| 8″ | 200 | 419. 0 | 55.6 | 269.7 | 349.3 | 31.8 | 12 | 1 1/8″ | 62.2 | 137 |
| 10″ | 250 | 508. 0 | 63.5 | 323.9 | 431.8 | 35.1 | 16 | 1 1/4″ | 102 | 225 |
| 12″ | 300 | 559. 0 | 66.5 | 381 | 489 | 35.1 | 20 | 1 1/4″ | 132 | 291 |
| 14″ | 350 | 603. 5 | 69.9 | 412.8 | 527.1 | 38.1 | 20 | 1 3/8″ | 158 | 348 |
| 16″ | 400 | 686. 0 | 76.2 | 469.9 | 603.3 | 41.1 | 20 | 1 1/2″ | 225 | 496 |
| 18″ | 450 | 743. 0 | 82.6 | 533.4 | 654.1 | 44.5 | 20 | 1 5/8″ | 285 | 628 |
| 20″ | 500 | 813. 0 | 88.9 | 584.2 | 723.9 | 44.5 | 24 | 1 5/8″ | 365 | 805 |
| 24″ | 600 | 940. 0 | 101.6 | 692.2 | 838.2 | 50.8 | 24 | 1 7/8″ | 532 | 1170 |
Class 1500 Blind Flanges Dimensions
| Normal Diam. | O.D. Flange | Thk. Of Flange Min | Diam. of Hub | Diam. of Bolt Circle | Diam. of Bolt Holes | Number of Bolts | Diam. of Bolts (inch) | Approx. Weight | ||
| inch | dn | O | C | X | BC | BH | BN | BD | KG/PCS | LB/PCS |
| 1/2″ | 15 | 120.7 | 22.4 | 38.1 | 82.6 | 22.4 | 4 | 3/4″ | 1.9 | 4.2 |
| 3/4″ | 20 | 130 | 25.4 | 44.5 | 88.9 | 22.4 | 4 | 3/4″ | 2.7 | 6 |
| 1″ | 25 | 149.4 | 28.4 | 52.3 | 101.6 | 25.4 | 4 | 7/8″ | 3.7 | 8.1 |
| 1-1/4″ | 32 | 158.8 | 28.4 | 63.5 | 111.3 | 25.4 | 4 | 7/8″ | 4.3 | 9.5 |
| 1-1/2″ | 40 | 177.8 | 31.8 | 69.9 | 124 | 28.4 | 4 | 1″ | 5.9 | 13 |
| 2″ | 50 | 215.9 | 38.1 | 104.6 | 165.1 | 25.4 | 8 | 7/8″ | 11.3 | 24.9 |
| 2-1/2″ | 65 | 244.3 | 41.1 | 124 | 190.5 | 28.4 | 8 | 1″ | 16 | 35.2 |
| 3″ | 80 | 266.7 | 47.8 | 133.4 | 190.5 | 25.4 | 8 | 7/8″ | 19.5 | 43 |
| 4″ | 100 | 311.2 | 53.8 | 162.1 | 235 | 31.8 | 8 | 1 1/8″ | 33 | 72.8 |
| 5″ | 125 | 374.7 | 73.2 | 196.9 | 279.4 | 35.1 | 8 | 1 1/4″ | 60 | 132 |
| 6″ | 150 | 393.7 | 82.6 | 228.6 | 317.5 | 31.8 | 12 | 1 1/8″ | 75 | 165 |
| 8″ | 200 | 482.6 | 91.9 | 292.1 | 393.7 | 38.1 | 12 | 1 3/8″ | 125 | 275 |
| 10″ | 250 | 584.2 | 108 | 368.3 | 469.9 | 38.1 | 16 | 1 3/8″ | 215 | 474 |
| 12″ | 300 | 673.1 | 124 | 450.9 | 533.4 | 38.1 | 20 | 1 3/8″ | 316 | 697 |
| 14″ | 350 | 749.3 | 133.4 | 495.3 | 558.8 | 41.1 | 20 | 1 1/2″ | ||
| 16″ | 400 | 825.5 | 146.1 | 552.5 | 616 | 44.5 | 20 | 1 5/8″ | ||
| 18″ | 450 | 914.4 | 162.1 | 596.9 | 685.8 | 50.8 | 20 | 1 7/8″ | ||
| 20″ | 500 | 984.3 | 177.8 | 641.4 | 749.3 | 53.8 | 20 | 2″ | ||
| 24″ | 600 | 1168.4 | 203.2 | 762 | 901.7 | 66.5 | 20 | 2 1/2″ | ||
Class 2500 Blind Flanges Dimensions
| Normal Diam. | O.D. Flange | Thk. Of Flange Min | Diam. of Bolt Circle | Diam. of Bolt Holes | Number of Bolts | Diam. of Bolts (inch) | Approx. Weight | ||
| inch | dn | O | C | BC | BH | BN | BD | KG | LB |
| 1/2″ | 15 | 133.4 | 30.2 | 88.9 | 22.4 | 4 | 3/4″ | 3 | 7 |
| 3/4″ | 20 | 139.7 | 31.8 | 95.3 | 22.4 | 4 | 3/4″ | 4.5 | 10 |
| 1″ | 25 | 158.8 | 35.1 | 108 | 25.4 | 4 | 7/8″ | 5 | 12 |
| 1-1/4″ | 32 | 184.2 | 38.1 | 130 | 28.4 | 4 | 1″ | 8 | 18 |
| 1-1/2″ | 40 | 203.2 | 44.5 | 146.1 | 31.8 | 4 | 1 1/8″ | 11 | 25 |
| 2″ | 50 | 235 | 50.8 | 171.5 | 28.4 | 8 | 1″ | 17 | 38 |
| 2-1/2″ | 65 | 266.7 | 57.2 | 196.9 | 31.8 | 8 | 1 1/8″ | 25 | 55 |
| 3″ | 80 | 304.8 | 66.5 | 228.6 | 35.1 | 8 | 1 1/4″ | 39 | 86 |
| 4″ | 100 | 355.6 | 76.2 | 273.1 | 41.1 | 8 | 1 1/2″ | 60 | 133 |
| 5″ | 125 | 419.1 | 91.9 | 323.9 | 47.8 | 8 | 1 3/4″ | 101 | 223 |
| 6″ | 150 | 482.6 | 108 | 368.3 | 53.8 | 8 | 2″ | 156 | 345 |
| 8″ | 200 | 552.5 | 127 | 438.2 | 53.8 | 12 | 2″ | 242 | 533 |
| 10″ | 250 | 673.1 | 165.1 | 539.8 | 66.5 | 12 | 2 1/2″ | 465 | 1023 |
| 12″ | 300 | 762 | 184.2 | 619.3 | 73.2 | 12 | 2 3/4″ | 665 | 1463 |
Size Of Blind Flanges
| 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 | WN |
| 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 |
Weight Chart Of Blind Flanges
| DN In inches | Dimension | 125 LBS 150 LBS | 300 LBS | 400 LBS | 600 LBS | 900 LBS | 1500 LBS | 2500 LBS | |||||||
| inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | ||
| 1/2 | A | 3 1/2 | 88.9 | 3 3/4 | 95.2 | 3 3/4 | 95.2 | 3 3/4 | 95.2 | 4 3/4 | 121 | 4 3/4 | 121 | 5 1/4 | 133.4 |
| b | 7/16 | 11.1 | 9/16 | 14.3 | 9/16 | 14.3 | 9/16 | 14.3 | 7/8 | 22.2 | 7/8 | 22.2 | 1 3/16 | 30.2 | |
| D2 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | |
| D1 | 2 3/8 | 60.3 | 2 5/8 | 66.7 | 2 5/8 | 66.7 | 2 5/8 | 66.7 | 3 1/4 | 82.6 | 3 1/4 | 82.6 | 3 1/2 | 88.9 | |
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | 4 | 44 | |
| d | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | |
| 3/4 | A | 3 7/8 | 98.4 | 4 5/8 | 117.5 | 4 5/8 | 117.5 | 4 5/8 | 117.5 | 5 1/8 | 130 | 5 1/8 | 130 | 5 1/2 | 139.7 |
| b | 1/2 | 12.7 | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 1 | 25.4 | 1 | 25.4 | 1 1/4 | 31.8 | |
| D2 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | |
| D1 | 2 3/4 | 69.8 | 3 1/4 | 82.5 | 3 1/4 | 82.5 | 3 1/4 | 82.5 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 3 3/4 | 95.2 | |
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | 4 | 44 | |
| d | 5/8 | 15.9 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | |
| 1 | A | 4 1/4 | 108 | 4 7/8 | 123.8 | 4 7/8 | 123.8 | 4 7/8 | 123.8 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 6 1/4 | 159 |
| b | 9/16 | 14.3 | 11/16 | 17.5 | 11/16 | 17.5 | 11/16 | 17.5 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 3/8 | 34.9 | |
| D2 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | |
| D1 | 3 1/8 | 79.4 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 4 | 102 | 4 | 102 | 4 1/4 | 108 | |
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |
| d | 5/8 | 15.9 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | 1 | 25.4 | |
| 1 1/4 | A | 4 5/8 | 117.5 | 5 1/4 | 133.4 | 5 1/4 | 133.4 | 5 1/4 | 133.4 | 6 1/4 | 159 | 6 1/4 | 159 | 7 1/4 | 184.2 |
| b | 5/8 | 15.9 | 3/4 | 19 | 13/16 | 20.6 | 13/16 | 20.6 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 1/2 | 38.1 | |
| D2 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | |
| D1 | 3 1/2 | 88.9 | 3 7/8 | 98.4 | 3 7/8 | 98.4 | 3 7/8 | 98.4 | 4 3/8 | 111 | 4 3/8 | 111 | 5 1/8 | 130 | |
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |
| d | 5/8 | 15.9 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | 1 1/8 | 28.6 | |
| 1 1/2 | A | 5 | 127 | 6 1/8 | 155.6 | 6 1/8 | 155.6 | 6 1/8 | 155.6 | 7 | 177.8 | 7 | 177.8 | 8 | 203 |
| b | 11/16 | 17.5 | 13/16 | 20.6 | 7/8 | 22.2 | 7/8 | 22.2 | 1 1/4 | 31.8 | 1 1/4 | 31.8 | 1 3/4 | 44.5 | |
| D2 | 2 7/8 | 73 98 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | |
| D1 | 3 7/8 | 4 | 4 1/2 | 114 | 4 1/2 | 114 | 4 1/2 | 114 | 4 7/8 | 124 | 4 7/8 | 124 | 5 3/4 | 146 | |
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | |
| d | 5/8 | . 15.9 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 1/4 | 31.8 | |
| 2 | A | 6 | 152.4 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 8 1/2 | 215.9 | 8 1/2 | 215.9 | 9 1/4 | 234.9 |
| b | 3/4 | 19 | 7/8 | 22.2 | 1 | 25.4 | 1 | 25.4 | 1 1/2 | 38.1 | 1 1/2 | 38.1 | 2 | 50.8 | |
| D2 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | |
| D1 | 4 3/4 | 121 | 5 | 127 | 5 | 127 | 5 | 127 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 6 3/4 | 171 | |
| n | 4 | 4 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | |
| d | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | 1 1/8 | 28.6 | |
| 2 1/2 | A | 7 | 177.8 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 9 5/8 | 244 | 9 5/8 | 244 | 10 1/2 | 266.7 |
| b | 7/8 | 22.2 | 1 | 25.4 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 5/8 | 41.3 | 1 5/8 | 41.3 | 2 1/4 | 57.2 | |
| D2 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 105 | 4 1/8 | 105 | 4 1/8 | 105 | |
| D1 | 5 1/2 | 139.7 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 7 3/4 | 197 | |
| n | 4 | 4 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | |
Pressure Rating Of Blind Flanges
Pressure-Temperature Ratings for ASTM Group 2-1.1 Materials
Working pressure by Classes, BAR
| Temp -29 °C | 150 | 300 | 400 | 600 | 900 | 1500 | 2500 |
| 38 | 19.6 | 51.1 | 68.1 | 102.1 | 153.2 | 255.3 | 425.5 |
| 50 | 19.2 | 50.1 | 66.8 | 100.2 | 150.4 | 250.6 | 417.7 |
| 100 | 17.7 | 46.6 | 62.1 | 93.2 | 139.8 | 233 | 388.3 |
| 150 | 15.8 | 45.1 | 60.1 | 90.2 | 135.2 | 225.4 | 375.6 |
| 200 | 13.8 | 43.8 | 58.4 | 87.6 | 131.4 | 219 | 365 |
| 250 | 12.1 | 41.9 | 55.9 | 83.9 | 125.8 | 209.7 | 349.5 |
| 300 | 10.2 | 39.8 | 53.1 | 79.6 | 119.5 | 199.1 | 331.8 |
| 325 | 9.3 | 38.7 | 51.6 | 77.4 | 116.1 | 193.6 | 322.6 |
| 350 | 8.4 | 37.6 | 50.1 | 75.1 | 112.7 | 187.8 | 313 |
| 375 | 7.4 | 36.4 | 48.5 | 72.7 | 109.1 | 181.8 | 303.1 |
| 400 | 6.5 | 34.7 | 46.3 | 69.4 | 104.2 | 173.6 | 289.3 |
| 425 | 5.5 | 28.8 | 38.4 | 57.5 | 86.3 | 143.8 | 239.7 |
| 450 | 4.6 | 23 | 30.7 | 46 | 69 | 115 | 191.7 |
| 475 | 3.7 | 17.4 | 23.2 | 34.9 | 52.3 | 87.2 | 145.3 |
| 500 | 2.8 | 11.8 | 15.7 | 23.5 | 35.3 | 58.8 | 97.9 |
| 538 | 1.4 | 5.9 | 7.9 | 11.8 | 17.7 | 29.5 | 49.2 |
| Temp °C | 150 | 300 | 400 | 600 | 900 | 1500 | 2500 |
Pressure-Temperature Ratings for ASTM Group 2-2.3 Materials
Working pressure by Classes, BAR
| Temp -29 °C | 150 | 300 | 400 | 600 | 900 | 1500 | 2500 |
| 38 | 15.9 | 41.4 | 55.2 | 82.7 | 124.1 | 206.8 | 344.7 |
| 50 | 15.3 | 40 | 53.4 | 80 | 120.1 | 200.1 | 333.5 |
| 100 | 13.3 | 34.8 | 46.4 | 69.6 | 104.4 | 173.9 | 289.9 |
| 150 | 12 | 31.4 | 41.9 | 62.8 | 94.2 | 157 | 261.6 |
| 200 | 11.2 | 29.2 | 38.9 | 58.3 | 87.5 | 145.8 | 243 |
| 250 | 10.5 | 27.5 | 36.6 | 54.9 | 82.4 | 137.3 | 228.9 |
| 300 | 10 | 26.1 | 34.8 | 52.1 | 78.2 | 130.3 | 217.2 |
| 325 | 9.3 | 25.5 | 34 | 51 | 76.4 | 127.4 | 212.3 |
| 350 | 8.4 | 25.1 | 33.4 | 50.1 | 75.2 | 125.4 | 208.9 |
| 375 | 7.4 | 24.8 | 33 | 49.5 | 74.3 | 123.8 | 206.3 |
| 400 | 6.5 | 24.3 | 32.4 | 48.6 | 72.9 | 121.5 | 202.5 |
| 425 | 5.5 | 23.9 | 31.8 | 47.7 | 71.6 | 119.3 | 198.8 |
| 450 | 4.6 | 23.4 | 31.2 | 46.8 | 70.2 | 117.1 | 195.1 |
| Temp °C | 150 | 300 | 400 | 600 | 900 | 1500 | 2500 |
Price Of Blind Flanges
| Stainless Steel Flanges | USD $2.05 - $10.06 / Piece (FOB Price) on request |
| High Nickel Alloys Flanges | USD $8.10 - $20.20 / Piece (FOB Price) on request |
| Duplex & Super Duplex Flange | USD $10.20 - $35.50 / Piece (FOB Price) on request |
| Cupro Nickel Flanges | USD $5.19 - $10.48 / Piece (FOB Price) on request |
| Carbon Steel Flanges | USD $2.08 - $7.10 / Piece (FOB Price) on request |
Application Of Blind Flanges
We make sure that our every product is made of high quality raw material. We thoroughly test each and every product before dispatching it to our customers.
- Petrochemical Industries
- Power Generation Industries
- Food Processing Industries
- Oil & Gas Industries
- Sugar Industries
Testing Of Blind Flanges
We known for its accurate and perfect dimensions. We thoroughly test all our products before shipping them to the customers. We carry out destructive as well as non-destructive tests on all our products.
- Eddy Current Examining
- Hydrostatic Analysis
- Pitting Protection Test
- Power Generation Industries
- Positive Material Recognition
Packing Of Blind Flanges
We uses the most safest and the most effective ways of packaging for all types of deliveries. We pack our goods in various ways such as:
- Wooden Boxes
- Wooden Pallets
- Shrink-Wrapped
- Carton Boxes
- Wooden crates
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Types of Flanges
- Forge Flange
- Blind Flange
- Slip On Flange
- Weldneck Flange
- Lap Joint Flange
- Threaded Flange
- Socketweld Flange
- Long Weld Neck Flange
- Weldo / Nipo Flange
- Orifice Flange
- Reducing Flange
- Flat Flange
- Loose Flange
- RTJ Flanges
- SORF Flanges
- Square Flanges
- SWRF Flanges
- Expander Flanges
- WNRF Flanges
- Ring Type Joint Flanges
- Groove & Tongue Flanges
- Spectacle Blind Flanges
- Weld Neck Flanges A / B Flanges
- Spades Ring Spacers Flanges
- Screwed Flanges
- Forging Facing Flanges
- Flanges Bolts