ASME B16.48 Spectacle Blind Flange
ISO Approved Spectacle Blind Flange Manufacturer In India And ASME B16.48 Dimensions Chart.
Stainless Steel Spectacle Blind Flange
ASME B16.48 Spectacle Blind Flange
Piping Spectacle Blind Flange
What Is A Spectacle Blind Flange?
ASME B16.48 have two discs, one blind and one ring. They can be assembled in a system in an open position or in a closed position. The spectacle blind flange manufacturers in india produce different kinds such as the stainless steel spectacle blind flange or different classes such as the Spec Blind. The asme b16.48 spectacle blind flange has the gasket and bolt holes in the flat face so that bolts often go through the gasket as well.
Carbon Steel Spectacle Blind Flange
Spectacle Blind Figure 8
ASME 16.48 Spectacle Blind Dimensions
Table of contents
- What Is The Use Of Spectacle Blind Flange?
- What Is Difference Between Spectacle Blind And Spacer?
- Why Spectacle Blind Flange– Known As A Figure-8 Blind?
- ASME B16.48 Dimensions
- Class 150 Spectacle Blind Flange Dimensions
- Class 300 Spectacle Blind Flange Dimensions
- Class 600 Spectacle Blind Flange Dimensions
- Class 900 Spectacle Blind Flange Dimensions
- Class 1500 Spectacle Blind Flange Dimensions
- Class 2500 Spectacle Blind Flange Dimensions
ASME B16.48 Class 150 To 2500 Dimesions
What Is The Use Of Spectacle Blind Flange?
The ASME B16.48 is used in maintenance systems where opening and closing of pipe systems is required. In the carbon steel spectacle blind flange belong to the pipeline isolation device class of ASME B16.48. According to the need of a raised face, the spectacle blinds could be used. On the other hand where gasket with tight sealing is involved, the spectacle blind figure 8 could be used. These could be rotated to change positions from closed to open and vice versa.
What Is Difference Between Spectacle Blind And Spacer?
Spectacle Blind : In any piping spectacle blind flange is used to close the system of fluid flow with the possibility of opening it without having to fully dismantle the system. The bolts have to be loosened for a precision flange spectacle blind to be rotated into the open or closed position. Rajtilak Metal provides a detailed asme b16.48 flange weight chart for the clients to select from. We also offer a variety of spectacle blind flange dimensions to pick up from. Our spectacle blind flange price is very much affordable to the clients.
Spacer Flanges : Spacer is basically a spectacle flange without the permanent connection to the second disk. Paddle Spacers are made from forged steel and comply with standards.
Why Spectacle Blind Flange– Known As A Figure-8 Blind?
ASME B16.48 Stainless Steel Spectacle Blind Flange– also known as a figure-8 blind – is generally a piece of metal that is cut to fit between two gaskets and usually sandwiched between two pipe flange. A ANSI B16.48 Blind Spectacle Flange is often made from two metal discs that are attached to each other by a small section of steel. These ANSI B16.48 Spectacle Blind Flange Raised Face meet the requirements of various industries like heavy engineering, and railways engineering, automobile, pipeline.
ASME B16.48 Dimensions
Class 150 Spectacle Blind Flange Dimensions
| Normal Pipe Size | Outside Daimeter A |
Inside Daimeter B |
Center Line C |
Thickness t |
Width Of Web W |
| 1/2 | 45 | 16 | 60 | 3 | 38 |
| 3/4 | 54 | 21 | 70 | 3 | 38 |
| 1 | 64 | 27 | 80 | 3 | 38 |
| 1¼ | 73 | 42 | 90 | 6.4 | 38 |
| 1½ | 83 | 48 | 100 | 6.4 | 38 |
| 2 | 102 | 61 | 120 | 6.4 | 51 |
| 2½ | 107 | 73 | 140 | 6.4 | 51 |
| 3 | 133 | 89 | 150 | 6.4 | 64 |
| 3½ | 159 | 102 | 175 | 9.7 | 64 |
| 4 | 172 | 114 | 190 | 9.7 | 64 |
| 5 | 194 | 141 | 215 | 9.7 | 76 |
| 6 | 219 | 168 | 240 | 12.7 | 76 |
| 8 | 276 | 219 | 300 | 12.7 | 76 |
| 10 | 337 | 273 | 360 | 15.7 | 102 |
| 12 | 406 | 324 | 430 | 19.1 | 102 |
| 14 | 448 | 356 | 475 | 19.1 | 108 |
| 16 | 511 | 406 | 460 | 22.4 | 108 |
| 18 | 546 | 457 | 580 | 25.4 | 114 |
| 20 | 603 | 508 | 635 | 28.4 | 121 |
| 24 | 714 | 610 | 750 | 31.8 | 140 |
Class 300 Spectacle Blind Flange Dimensions
| Normal Pipe Size | Outside Daimeter A |
Inside Daimeter B |
Center Line C |
Thickness t |
Width Of Web W |
| 1/2 | 51 | 16 | 65 | 6.4 | 38 |
| 3/4 | 64 | 21 | 80 | 6.4 | 38 |
| 1 | 70 | 27 | 90 | 6.4 | 38 |
| 1¼ | 79 | 42 | 100 | 6.4 | 38 |
| 1½ | 92 | 48 | 115 | 6.4 | 38 |
| 2 | 108 | 61 | 125 | 9.7 | 51 |
| 2½ | 127 | 73 | 150 | 9.7 | 51 |
| 3 | 146 | 89 | 170 | 9.7 | 64 |
| 3½ | 162 | 102 | 185 | 12.7 | 64 |
| 4 | 178 | 114 | 200 | 12.7 | 64 |
| 5 | 213 | 141 | 235 | 15.7 | 76 |
| 6 | 248 | 168 | 270 | 15.7 | 76 |
| 8 | 305 | 219 | 330 | 22.4 | 76 |
| 10 | 359 | 273 | 385 | 25.4 | 102 |
| 12 | 419 | 324 | 450 | 28.4 | 102 |
| 14 | 483 | 356 | 515 | 31.8 | 108 |
| 16 | 536 | 406 | 570 | 38.1 | 108 |
| 18 | 594 | 457 | 630 | 41.1 | 114 |
| 20 | 651 | 508 | 685 | 44.5 | 121 |
| 24 | 772 | 610 | 810 | 50.8 | 140 |
Class 600 Spectacle Blind Flange Dimensions
| Normal Pipe Size | Outside Daimeter A |
Inside Daimeter B |
Center Line C |
Thickness t |
Width Of Web W |
| 1/2 | 51 | 16 | 65 | 6.4 | 38 |
| 3/4 | 64 | 21 | 80 | 6.4 | 38 |
| 1 | 70 | 27 | 90 | 6.4 | 57 |
| 1¼ | 79 | 37 | 100 | 9.7 | 57 |
| 1½ | 92 | 43 | 115 | 9.7 | 67 |
| 2 | 108 | 55 | 125 | 9.7 | 57 |
| 2½ | 127 | 67 | 150 | 12.7 | 67 |
| 3 | 146 | 83 | 170 | 12.7 | 67 |
| 3½ | 159 | 96 | 185 | 15.7 | 76 |
| 4 | 191 | 108 | 215 | 15.7 | 76 |
| 5 | 238 | 135 | 265 | 19.1 | 86 |
| 6 | 264 | 162 | 290 | 22.4 | 86 |
| 8 | 318 | 212 | 350 | 28.4 | 95 |
| 10 | 397 | 265 | 430 | 35.1 | 105 |
| 12 | 454 | 315 | 490 | 41.1 | 105 |
| 14 | 489 | 346 | 525 | 44.5 | 114 |
| 16 | 562 | 397 | 605 | 50.8 | 124 |
| 18 | 610 | 448 | 655 | 53.8 | 133 |
| 20 | 679 | 497 | 725 | 63.5 | 133 |
| 24 | 787 | 597 | 840 | 73.2 | 152 |
Class 900 Spectacle Blind Flange Dimensions
| Normal Pipe Size | Outside Daimeter A |
Inside Daimeter B |
Center Line C |
Thickness t |
Width Of Web W |
| 1/2 | 60 | 16 | 80 | 6.4 | 38 |
| 3/4 | 67 | 21 | 90 | 6.4 | 41 |
| 1 | 76 | 27 | 100 | 6.4 | 57 |
| 1¼ | 86 | 37 | 110 | 9.7 | 57 |
| 1½ | 95 | 43 | 125 | 9.7 | 67 |
| 2 | 140 | 55 | 165 | 12.7 | 57 |
| 2½ | 162 | 67 | 190 | 12.7 | 67 |
| 3 | 165 | 83 | 190 | 15.7 | 67 |
| 4 | 203 | 108 | 235 | 19.1 | 76 |
| 5 | 244 | 135 | 280 | 22.4 | 86 |
| 6 | 286 | 162 | 320 | 25.4 | 86 |
| 8 | 356 | 212 | 395 | 35.1 | 95 |
| 10 | 432 | 265 | 470 | 41.1 | 105 |
| 12 | 495 | 315 | 535 | 47.8 | 105 |
| 14 | 518 | 346 | 560 | 53.8 | 114 |
| 16 | 572 | 397 | 615 | 60.5 | 124 |
| 18 | 635 | 448 | 685 | 66.5 | 133 |
| 20 | 696 | 497 | 750 | 73.2 | 133 |
| 24 | 835 | 597 | 900 | 88.9 | 152 |
Class 1500 Spectacle Blind Flange Dimensions
| Normal Pipe Size | Outside Daimeter A |
Inside Daimeter B |
Center Line C |
Thickness t |
Width Of Web W |
| 1/2 | 61 | 16 | 80 | 6.4 | 38 |
| 3/4 | 67 | 21 | 90 | 9.7 | 41 |
| 1 | 76 | 27 | 100 | 9.7 | 64 |
| 1¼ | 86 | 35 | 110 | 9.7 | 64 |
| 1½ | 95 | 41 | 125 | 12.7 | 70 |
| 2 | 140 | 53 | 165 | 12.7 | 70 |
| 2½ | 162 | 63 | 190 | 15.7 | 76 |
| 3 | 172 | 78 | 205 | 19.1 | 76 |
| 4 | 206 | 102 | 240 | 22.4 | 89 |
| 5 | 251 | 128 | 290 | 28.4 | 89 |
| 6 | 279 | 154 | 320 | 35.1 | 89 |
| 8 | 349 | 203 | 395 | 41.1 | 102 |
| 10 | 432 | 255 | 480 | 50.8 | 114 |
| 12 | 518 | 303 | 570 | 60.5 | 114 |
| 14 | 575 | 333 | 635 | 66.5 | 127 |
| 16 | 638 | 381 | 705 | 76.2 | 133 |
| 18 | 702 | 429 | 775 | 85.9 | 146 |
| 20 | 752 | 478 | 830 | 95.3 | 152 |
| 24 | 899 | 575 | 990 | 111.3 | 178 |
Class 2500 Spectacle Blind Flange Dimensions
| Normal Pipe Size | Outside Daimeter A |
Inside Daimeter B |
Center Line C |
Thickness t |
Width Of Web W |
| 1/2 | 67 | 16 | 90 | 9.7 | 38 |
| 3/4 | 73 | 21 | 95 | 9.7 | 41 |
| 1 | 83 | 27 | 110 | 9.7 | 64 |
| 1¼ | 102 | 35 | 130 | 12.7 | 64 |
| 1½ | 114 | 41 | 145 | 15.7 | 70 |
| 2 | 143 | 53 | 170 | 15.7 | 70 |
| 2½ | 165 | 63 | 195 | 19.1 | 76 |
| 3 | 194 | 78 | 230 | 22.4 | 76 |
| 4 | 232 | 102 | 275 | 28.4 | 89 |
| 5 | 276 | 128 | 325 | 35.1 | 89 |
| 6 | 314 | 154 | 370 | 41.1 | 89 |
| 8 | 384 | 198 | 440 | 53.8 | 102 |
| 10 | 473 | 248 | 540 | 66.5 | 114 |
| 12 | 546 | 289 | 620 | 79.2 | 114 |
Stainless Steel Spectacle Blind Flange Weight Calculation Formula And View ANSI B16.48 For Installation.
Stainless Steel Spectacle Blind Flange Weight Chat
| DN In inches | Dimension | ASME B16.48 Dimensional Sizes 1/2 inches to 2 1/2 inches | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 125 LBS 150 LBS | 300 LBS | 400 LBS | 600 LBS | 900 LBS | 1500 LBS | 2500 LBS | ||||||||||
| inches | millimeter | inches | millimeter | inches | millimeter | inches | millimeter | inches | millimeter | inches | millimeter | inches | millimeter | |||
| 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 | ||
| d | 3/4 | 19 | 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 | ||
Check Carbon Steel Spectacle Blind Flange Price List And Piping Spectacle Blind Flange Thickness Calculation For Pressure Vessel.
Different pressure classes are available such as the spectacle blind flange 300. There is difference in the asme b16.48 material according to the application requirement. The suppliers worldwide produce different specifications. The spectacle blind flange supplier in Malaysia would make different classes and types than the spectacle blind flange Singapore because of the requirements and the market in the respective countries.
| Carbon Steel Spectacle Blind Flange Price List | |||||
|---|---|---|---|---|---|
| Type Of Flanges | Size | Material | Standard | Class | Price In India (INR) |
| Spec Blind | 2" | ASTM A105 | ASME B16.48 | Class 150 | 376.87 |
| Spec Blind | 4" | ASTM A105 | ASME B16.48 | Class 150 | 564.7 |
| Spec Blind | 6" | ASTM A105 | ASME B16.48 | Class 150 | 900.00 |
| Spec Blind | 8" | ASTM A105 | ASME B16.48 | Class 150 | 1428.30 |
| Spec Blind | 10" | ASTM A105 | ASME B16.48 | Class 150 | 1876.85 |
| Spec Blind | 12" | ASTM A105 | ASME B16.48 | Class 300 | 2476.00 |
| Spec Blind | 14" | ASTM A105 | ASME B16.48 | Class 300 | 3066.00 |
| Spec Blind | 16" | ASTM A105 | ASME B16.48 | Class 300 | 3600.20 |
| Spec Blind | 18" | ASTM A105 | ASME B16.48 | Class 300 | 4488.20 |
| Spec Blind | 20" | ASTM A105 | ASME B16.48 | Class 300 | 5344.20 |
| Spec Blind | 22" | ASTM A105 | ASME B16.48 | Class 300 | 5900.00 |
| Spec Blind | 24" | ASTM A105 | ASME B16.48 | Class 300 | 6670.00 |
Please note this is an approx Price of ASME B16.48 Flange in Mumbai, India. For final Carbon Steel Spectacle Blind Flange Price List Please Call on 91 - 22 - 67437342 or drop an Email to info@rajtilakmetal.com
Piping Spectacle Blind Flange Thickness
| ANSI B16.48 Flanges Wall Thickness | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NPS (Normal Pipe Sizes) | Outside Daimeter (O.D.) | Schedule 10 | Schedule 20 | Schedule 30 | STD Wall | Schedule 40 | Schedule 60 | EXT Hvy | Schedule 80 | Schedule 100 | Schedule 120 | Schedule 140 | Schedule 160 | XX Hvy |
| ½ | 0.84 | 0.083 | ... | ... | 0.109 | 0.109 | ... | 0.147 | 0.147 | ... | ... | ... | 0.188 | 0.294 |
| ¾ | 1.05 | 0.083 | ... | ... | 0.113 | 0.113 | ... | 0.154 | 0.154 | ... | ... | ... | 0.219 | 0.308 |
| 1 | 1.315 | 0.109 | ... | ... | 0.133 | 0.133 | ... | 0.179 | 0.179 | ... | ... | ... | 0.25 | 0.358 |
| 1 ¼ | 1.66 | 0.109 | ... | ... | 0.14 | 0.14 | ... | 0.191 | 0.191 | ... | ... | ... | 0.25 | 0.382 |
| 1 ½ | 1.9 | 0.109 | ... | ... | 0.145 | 0.145 | ... | 0.2 | 0.2 | ... | ... | ... | 0.281 | 0.4 |
| 2 | 2.375 | 0.109 | ... | ... | 0.154 | 0.154 | ... | 0.218 | 0.218 | ... | ... | ... | 0.344 | 0.436 |
| 2 ½ | 2.875 | 0.12 | ... | ... | 0.203 | 0.203 | ... | 0.276 | 0.276 | ... | ... | ... | 0.375 | 0.552 |
| 3 | 3.5 | 0.12 | ... | ... | 0.216 | 0.216 | ... | 0.3 | 0.3 | ... | ... | ... | 0.438 | 0.6 |
| 3 ½ | 4 | 0.12 | ... | ... | 0.226 | 0.226 | ... | 0.318 | 0.318 | ... | ... | ... | ... | 0.636 |
| 4 | 4.5 | 0.12 | ... | ... | 0.237 | 0.237 | ... | 0.337 | 0.337 | ... | 0.438 | ... | 0.531 | 0.674 |
| 5 | 5.563 | 0.134 | ... | ... | 0.258 | 0.258 | ... | 0.375 | 0.375 | ... | 0.5 | ... | 0.625 | 0.75 |
| 6 | 6.625 | 0.134 | ... | ... | 0.28 | 0.28 | ... | 0.432 | 0.432 | ... | 0.562 | ... | 0.719 | 0.864 |
| 8 | 8.625 | 0.148 | 0.25 | 0.277 | 0.322 | 0.322 | 0.406 | 0.5 | 0.5 | 0.594 | 0.719 | 0.812 | 0.906 | 0.875 |
| 10 | 10.75 | 0.165 | 0.25 | 0.307 | 0.365 | 0.365 | 0.5 | 0.5 | 0.594 | 0.719 | 0.844 | 1 | 1.125 | 1 |
| 12 | 12.75 | 0.18 | 0.25 | 0.33 | 0.375 | 0.406 | 0.562 | 0.5 | 0.688 | 0.844 | 1 | 1.125 | 1.312 | 1 |
| 14 | 14 | 0.25 | 0.312 | 0.375 | 0.375 | 0.438 | 0.594 | 0.5 | 0.75 | 0.938 | 1.094 | 1.25 | 1.406 | ... |
| 16 | 16 | 0.25 | 0.312 | 0.375 | 0.375 | 0.5 | 0.656 | 0.5 | 0.844 | 1.031 | 1.219 | 1.438 | 1.594 | ... |
| 18 | 18 | 0.25 | 0.312 | 0.438 | 0.375 | 0.562 | 0.75 | 0.5 | 0.938 | 1.156 | 1.375 | 1.562 | 1.781 | ... |
| 20 | 20 | 0.25 | 0.375 | 0.5 | 0.375 | 0.594 | 0.812 | 0.5 | 1.031 | 1.281 | 1.5 | 1.75 | 1.969 | ... |
| 22 | 22 | 0.25 | ... | ... | 0.375 | ... | ... | 0.5 | ... | ... | .... | .... | .... | .... |
| 24 | 24 | 0.25 | 0.375 | 0.562 | 0.375 | 0.688 | 0.969 | 0.5 | 1.219 | 1.531 | 1.812 | 2.062 | 2.344 | .... |
| 26 | 26 | .... | .... | .... | 0.375 | .... | .... | 0.5 | .... | .... | .... | .... | .... | .... |
| 30 | 30 | 0.312 | 0.5 | 0.625 | 0.375 | .... | .... | 0.5 | .... | .... | .... | .... | .... | .... |
| 36 | 36 | 0.312 | 0.5 | 0.625 | 0.375 | 0.75 | .... | 0.5 | .... | .... | .... | .... | .... | .... |
| 40 | 40 | .... | .... | .... | 0.375 | .... | .... | 0.5 | .... | .... | .... | .... | .... | .... |
| 42 | 42 | …….. | …….. | …….. | 0.375 | …….. | …….. | 0.5 | …….. | …….. | …….. | …….. | …….. | …….. |
| 48 | 48 | …….. | …….. | …….. | 0.375 | …….. | …….. | 0.5 | …….. | …….. | …….. | …….. | …….. | …….. |
View What Is Difference Between Spectacle Blind And Spacer?, Spectacle Blind Figure 8 Specifications And We Keep Bulk Stock Of B16.48 Spectacle Flange.
ASME B16.48 Specification
| Material Specification Of : | ASME B16.48 Spectacle Blind Flange |
|---|---|
| ASME B16.48 Standard Cover : | pressure ratings & temperature ratings, materials, marking, dimensions, weight, tolerances, testing |
| ASME B16.48 Available In | NPS 1/2 – NPS 24 Size |
| Use of ANSI/ASME B16.48 | In bypass line At unit battery limit At outlets and inlets of static Rotary equipment |
| ASME B16.48 Facing Types | Raised Face - High Pressure Applications Flat face - Low-Pressure Applications Male & Female Ring-Joint Blank - Ring Joint Gaskets |
| Materials | Carbon Steel Spectacle Blind Flanges - (ASTM A105) Stainless Steel Spectacle Blind Flanges - (ASTM A182 F304, F304L, F304H, F316, F316L, F316Ti, F310, F310S, F321, F321H, F317, F347, F347H, F904L.) Alloy Steel Spectacle Blind Flanges - (ASTM A182 F1, F11, F22, F5, F9, F91.) Duplex Stainless Steel Spectacle Blind Flanges - (UNS S31803, UNS S32750) Nickel Alloys Spectacle Blind Flanges - (Incoloy 800, 825, Hastelloy C22, C276, Monel 400 And 500, Inconel 600 And 625.) |
| ANSI B16.48 Test | During leakage testing test blanks |
| Flanges Standards | EN 1092-1, JIS, ASME B16.5, ASME B16.47 type A, UNI, DIN |
| Pressure Rating | Class 150 To Class 2500 |
| ASME B16.48 Marking Standard | Name of Manufacturer Schedule Type of Flange Facing Nominal Pipe Size Pressure Class ASME B16 Designation |
| ASME B16.48 Bolt Type | high strength bolts medium strength bolts low strength bolts |
| ASME B16.48 Surface Finish | smooth, concentric serrated, stock |
| ASME B16.48 Gaskets Types | Full Face Gasket Flat Ring Gasket Metallic Ring Gakset |
Pressure Rating Formula Of ASME B16.48 Spec Blind, Get Instant Delivery Of Flat Face Spectacle Blind Flange In India.
ANSI B16.48 Pressure Ratings
| ANSI B16.48 Pressure Pressure | |||||||
|---|---|---|---|---|---|---|---|
| Temperature (°C) | Class | ||||||
| Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 | |
| -29 - 38 | 19.8 | 51.7 | 68.9 | 103.4 | 155 | 259 | 431 |
| 50 | 19.5 | 51.7 | 68.9 | 103.4 | 155 | 259 | 431 |
| 100 | 17.7 | 51.5 | 68.7 | 103.0 | 155 | 258 | 429 |
| 150 | 15.8 | 50.2 | 66.8 | 100.3 | 151 | 251 | 418 |
| 200 | 13.8 | 48.6 | 64.8 | 97.2 | 146 | 243 | 405 |
| 250 | 12.1 | 46.3 | 61.7 | 92.7 | 139 | 232 | 386 |
| 300 | 10.2 | 42.9 | 57.0 | 85.7 | 129 | 214 | 357 |
| 325 | 9.3 | 41.4 | 55.0 | 82.6 | 124 | 207 | 344 |
| 350 | 8.4 | 40.0 | 53.4 | 80.0 | 120 | 200 | 334 |
| 375 | 7.4 | 37.8 | 50.4 | 75.7 | 114 | 189 | 315 |
| 400 | 6.5 | 34.7 | 46.3 | 69.4 | 104 | 174 | 290 |
| 425 | 5.5 | 28.8 | 38.4 | 57.5 | 86.3 | 144 | 240 |
| 450 | 4.6 | 23.0 | 30.7 | 46.0 | 69.0 | 115 | 192 |
| 475 | 3.7 | 17.1 | 22.8 | 34.2 | 51.3 | 85.4 | 142 |
| 500 | 2.8 | 11.6 | 15.4 | 23.2 | 34.7 | 57.9 | 96.5 |
| 538 | 1.4 | 5.9 | 7.9 | 11.8 | 17.7 | 29.5 | 49.2 |
ANSI/ASME B16.48 Bolt Size
| Class 150 Flanges | Class 300 Flanges | Class 600 Flanges | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NPS | # Bolts And Studs | Diameter of Bolts And Studs | Stud Length | # Bolts And Studs | Diameter of Bolts And Studs | Stud Length | # Bolts And Studs | Diameter of Bolts And Studs | Stud Length | |||
| 1/16 RF | RTJ | 1/16 RF | RTJ | 1/4 RF | RTJ | |||||||
| 1/2 | 4 | 0.50 | 2-1/4 | – | 4 | 0.50 | 2-1/2 | 3 | 4 | 0.50 | 3 | 3 |
| 3/4 | 4 | 0.50 | 2-1/2 | – | 4 | 0.63 | 3 | 3-1/2 | 4 | 0.63 | 3-1/2 | 3-1/2 |
| 1 | 4 | 0.50 | 2-1/2 | 3 | 4 | 0.63 | 3 | 3-1/2 | 4 | 0.63 | 3-1/2 | 3-1/2 |
| 1-1/4 | 4 | 0.50 | 2-3/4 | 3-1/4 | 4 | 0.63 | 3-1/4 | 3-3/4 | 4 | 0.63 | 3-3/4 | 3-3/4 |
| 1-1/2 | 4 | 0.50 | 2-3/4 | 3-1/4 | 4 | 0.75 | 3-1/2 | 4 | 4 | 0.75 | 4-1/4 | 4-1/4 |
| 2 | 4 | 0.63 | 3-1/4 | 3-3/4 | 8 | 0.63 | 3-1/2 | 4 | 8 | 0.63 | 4-1/4 | 4-1/4 |
| 2-1/2 | 4 | 0.63 | 3-1/2 | 4 | 8 | 0.75 | 4 | 4-1/2 | 8 | 0.75 | 4-3/4 | 4-3/4 |
| 3 | 4 | 0.63 | 3-1/2 | 4 | 8 | 0.75 | 4-1/4 | 4-3/4 | 8 | 0.75 | 5 | 5 |
| 3-1/2 | 8 | 0.63 | 3-1/2 | 4 | 8 | 0.75 | 4-1/4 | 5 | 8 | 0.88 | 5-1/2 | 5-1/2 |
| 4 | 8 | 0.63 | 3-1/2 | 4 | 8 | 0.75 | 4-1/2 | 5 | 8 | 0.88 | 5-3/4 | 5-3/4 |
| 5 | 8 | 0.75 | 3-3/4 | 4-1/4 | 8 | 0.75 | 4-3/4 | 5-1/4 | 8 | 1.00 | 6-1/2 | 6-1/2 |
| 6 | 8 | 0.75 | 4 | 4-1/2 | 12 | 0.75 | 4-3/4 | 5-1/2 | 12 | 1.00 | 6-3/4 | 6-3/4 |
| 8 | 8 | 0.75 | 4-1/4 | 4-3/4 | 12 | 0.88 | 5-1/2 | 6 | 12 | 1.13 | 7-1/2 | 7-3/4 |
| 10 | 12 | 0.88 | 4-1/2 | 5 | 16 | 1.00 | 6-1/4 | 6-3/4 | 16 | 1.25 | 8-1/2 | 8-1/2 |
| 12 | 12 | 0.88 | 4-3/4 | 5-1/4 | 16 | 1.13 | 6-3/4 | 7-1/4 | 20 | 1.25 | 8-3/4 | 8-3/4 |
| 14 | 12 | 1.00 | 5-1/4 | 5-3/4 | 20 | 1.13 | 7 | 7-1/2 | 20 | 1.38 | 9-1/4 | 9-1/4 |
| 16 | 16 | 1.00 | 5-1/4 | 5-3/4 | 20 | 1.25 | 7-1/2 | 8 | 20 | 1.50 | 10 | 10 |
| 18 | 16 | 1.13 | 5-3/4 | 6-1/4 | 24 | 1.25 | 7-3/4 | 8-1/4 | 20 | 1.63 | 10-3/4 | 10-3/4 |
| 20 | 20 | 1.13 | 6-1/4 | 6-3/4 | 24 | 1.25 | 8 | 8-3/4 | 24 | 1.63 | 11-1/4 | 11-1/2 |
| 24 | 20 | 1.25 | 6-3/4 | 7-1/4 | 24 | 1.50 | 9 | 10 | 24 | 1.88 | 13 | 13-1/4 |
| Class 900 Flanges | Class 1500 Flanges | Class 2500 Flanges | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NPS | # Bolts And Studs | Diameter of Bolts And Studs | Stud Length | # Bolts And Studs | Diameter of Bolts And Studs | Stud Length | # Bolts And Studs | Diameter of Bolts And Studs | Stud Length | |||
| 1/4 RF | RTJ | 1/4 RF | RTJ | 1/4 RF | RTJ | |||||||
| 1/2 | 4 | 0.75 | 4-1/4 | 4-1/4 | 4 | 0.75 | 4-1/4 | 4-1/4 | 4 | 0.75 | 4-3/4 | 4-3/4 |
| 3/4 | 4 | 0.75 | 4-1/2 | 4-1/2 | 4 | 0.75 | 4-1/2 | 4-1/2 | 4 | 0.75 | 5 | 5 |
| 1 | 4 | 0.88 | 5 | 5 | 4 | 0.88 | 5 | 5 | 4 | 0.88 | 5-1/2 | 5-1/2 |
| 1-1/4 | 4 | 0.88 | 5 | 5 | 4 | 0.88 | 5 | 5 | 4 | 1.00 | 6 | 6 |
| 1-1/2 | 4 | 1.00 | 5-1/2 | 5-1/2 | 4 | 1.00 | 5-1/2 | 5-1/2 | 4 | 1.13 | 6-3/4 | 6-3/4 |
| 2 | 8 | 0.88 | 5-3/4 | 5-3/4 | 8 | 0.88 | 5-3/4 | 5-3/4 | 8 | 1.00 | 7 | 7 |
| 2-1/2 | 8 | 1.00 | 6-1/4 | 6-1/4 | 8 | 1.00 | 6-1/4 | 6-1/4 | 8 | 1.13 | 7-3/4 | 8 |
| 3 | 8 | 0.88 | 5-3/4 | 5-3/4 | 8 | 1.13 | 7 | 7 | 8 | 1.25 | 8-3/4 | 9 |
| 4 | 8 | 1.13 | 6-3/4 | 6-3/4 | 8 | 1.25 | 7-3/4 | 7-3/4 | 8 | 1.50 | 10 | 10-1/4 |
| 5 | 8 | 1.25 | 7-1/2 | 7-1/2 | 8 | 1.50 | 9-3/4 | 9-3/4 | 8 | 1.75 | 11-3/4 | 12-1/4 |
| 6 | 12 | 1.13 | 7-1/2 | 7-3/4 | 12 | 1.38 | 10-1/4 | 10-1/2 | 8 | 2.00 | 13-1/2 | 14 |
| 8 | 12 | 1.38 | 8-3/4 | 8-3/4 | 12 | 1.63 | 11-1/2 | 11-3/4 | 12 | 2.00 | 15 | 15-1/2 |
| 10 | 16 | 1.38 | 9-1/4 | 9-1/4 | 12 | 1.88 | 13-1/4 | 13-1/2 | 12 | 2.50 | 19-1/4 | 20 |
| 12 | 20 | 1.38 | 10 | 10 | 16 | 2.00 | 14-3/4 | 15-1/4 | 12 | 2.75 | 21-1/4 | 22 |
| 14 | 20 | 1.50 | 10-3/4 | 11 | 16 | 2.25 | 16 | 16-3/4 | – | – | – | – |
| 16 | 20 | 1.63 | 11-1/4 | 11-1/2 | 16 | 2.50 | 17-1/2 | 18-1/2 | – | – | – | – |
| 18 | 20 | 1.88 | 12-3/4 | 13-1/4 | 16 | 2.75 | 19-1/2 | 20-3/4 | – | – | – | – |
| 20 | 20 | 2.00 | 13-3/4 | 14-1/4 | 16 | 3.00 | 21-1/4 | 22-1/4 | – | – | – | – |
| 24 | 20 | 2.50 | 17-1/4 | 18 | 16 | 3.50 | 24-1/4 | 25-1/2 | – | – | – | – |
Rajtilak Metal is a highly acclaimed Manufacturer & Suppliers of Stainless Steel Spectacle Blind Flange Manufacturers in India. ANSI B16.48 Spectacle Flange, spacers, and spades which are also known as paddle blank, figure-8, spacer and Slip blind. Our offered ANSI B16.48 carbon steel spectacle blind flange different components that used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown.
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