Spectacle Blind Specification
Specification | Spectacle Blind Flange |
---|---|
Spectacle Blind Flange Uses | Spectacle Blinds are simple safety devices that are installed between two pipe flanges. |
Size Chart | 1/2 Inch to 36 Inch, (Customized Up to 48") |
Thickness | Sch 10S To SCH 180 |
Supporting Material | Gasket/ Ring Joint/ Flange Bolts |
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 |
Manufacturer of | Forged/ Threaded/ Screwed / Plate |
Manufacturer Pressure Class | Class 150 (lb) up to 24" Class 300 (lb) up to 20" Class 600 (lb) up to 20" Class 900 (lb) up to 16" Class 1500 (lb) up to 10" Class 2500 (lb) up to 8" |
Flange Test | Hydrostatic testing machine/ UI trasonic flaw detector/ X-ray detector/ Direct-reading Spectrograph/ Magnetic particle detector |
Flange Equipment | Pushing Machine/ electric bevelling machine/ Press machine/ Bending machine/ Sand-blasting machine etc |
Coating | Anti-rust Paint/ Zinc Plated/ Oil Black Paint/ Yellow Transparent/ Cold and Hot Dip Galvanized |
Application | Bitumen upgraders Heavy oil refineries. Nuclear power (mostly seamless). Petrochemicals and acids. |
Spectacle Blind Price
Type Of Flange | Size In Inch | SCH | Class | Grade | Price In INR (India) Per Piece |
---|---|---|---|---|---|
Spectacle Blind Flange | 4 | 40 | 150 | ASTM A105 A105 | 674.00 |
- | 6 | 40 | 150 | - | 898.00 |
- | 8 | 40 | 150 | - | 1254.00 |
- | 10 | 40 | 150 | - | 1563.00 |
- | 12 | 80 | 300 | - | 2231.00 |
- | 14 | 80 | 300 | - | 2987.00 |
- | 16 | 80 | 300 | - | 3676.00 |
- | 18 | 80 | 300 | - | 4327.00 |
Spectacle Blind Flange | 20 | 80 | 300 | ASTM A105 A105 | 6743.00 |
ASME 16.48 Spectacle Blind Flange Dimensions
Size in Inch | Size in MM | Inner Diameter | Outer Diameter (O.D.) | Center-Center | Wall Thickness | Width Of Web | Web Thickness | Hole Diameter | Spectacle Blind Weight in (KG) | Paddle Blank Weight in (KG) | Paddle Spacer Blank Weight (Kg) |
1/2 | 15 | 16 | 45 | 60 | 3 | 38 | 2 | 15.875 | 0.07 | 0.03 | 0.03 |
3/4 | 20 | 21 | 54 | 70 | 3 | 38 | 2 | 15.875 | 0.1 | 0.05 | 0.04 |
1 | 25 | 27 | 64 | 80 | 3 | 38 | 2 | 15.875 | 0.14 | 0.07 | 0.06 |
1 1/4 | 32 | 42 | 73 | 90 | 6.4 | 38 | 4 | 15.875 | 0.35 | 0.21 | 0.14 |
1 1/2 | 40 | 48 | 83 | 100 | 6.4 | 38 | 4 | 15.875 | 0.46 | 0.27 | 0.18 |
2 | 50 | 61 | 102 | 120 | 6.4 | 51 | 4 | 19.05 | 0.68 | 0.41 | 0.26 |
2 1/2 | 65 | 73 | 107 | 140 | 6.4 | 51 | 4 | 19.05 | 0.7 | 0.46 | 0.24 |
3 | 80 | 89 | 133 | 150 | 6.4 | 64 | 4 | 19.05 | 1.1 | 0.71 | 0.39 |
3 1/2 | 90 | 102 | 159 | 175 | 9.7 | 64 | 5 | 19.05 | 2.44 | 1.54 | 0.9 |
4 | 100 | 114 | 172 | 190 | 9.7 | 64 | 5 | 19.05 | 2.81 | 1.8 | 1.01 |
5 | 130 | 141 | 194 | 215 | 9.7 | 76 | 5 | 22.225 | 3.37 | 2.29 | 1.08 |
6 | 150 | 168 | 219 | 240 | 12.7 | 76 | 7 | 22.225 | 5.39 | 3.82 | 1.57 |
8 | 200 | 219 | 276 | 300 | 12.7 | 76 | 10 | 22.225 | 8.32 | 6.07 | 2.25 |
10 | 250 | 273 | 337 | 360 | 15.7 | 102 | 12 | 25.4 | 15.04 | 11.19 | 3.84 |
12 | 300 | 324 | 406 | 430 | 19.1 | 102 | 15 | 25.4 | 26.95 | 19.77 | 7.18 |
14 | 350 | 356 | 448 | 475 | 19.1 | 108 | 15 | 28.575 | 32.94 | 24.07 | 8.87 |
16 | 400 | 406 | 511 | 540 | 22.4 | 108 | 17 | 28.575 | 50.27 | 36.73 | 13.54 |
18 | 450 | 457 | 546 | 580 | 25.4 | 114 | 20 | 31.75 | 61.79 | 47.55 | 14.23 |
20 | 500 | 508 | 603 | 635 | 28.4 | 121 | 22 | 31.75 | 83.67 | 64.85 | 18.82 |
24 | 600 | 610 | 714 | 750 | 31.8 | 140 | 24 | 34.925 | 129.3 | 101.8 | 27.49 |
Spectacle Blind Uses And Application
Spectacle Blind Weight
DN | NPS | Weight In KG |
---|---|---|
15 | 1/2 | |
20 | 3/4 | 0.4 |
25 | 1 | 0.6 |
40 | 1 1/2 | 0.8 |
50 | 2 | 1.7 |
80 | 3 | 4.6 |
100 | 4 | 6.5 |
150 | 6 | 11.9 |
200 | 8 | 30 |
250 | 10 | 58 |
300 | 12 | 101 |
Types Of Blinds In Piping
Stainless Steel Spectacle Blind Flanges
Carbon Steel Spectacle Blind Flanges
Spectacle Blind
Spectacle Flange
Spectacle Blinds
Pn16 Spectacle Blind Flanges
Stainless Steel Spade Blinds
Carbon Steel Paddle Blind Flanges
Duplex Spec Blinds
Super Duplex Spade Blind Flanges
Titanium Slip Blind Flanges
Mild Steel Spectacle Blank
Nickel Alloy Figure 8 Blind Flanges
Copper Spectacle Blind Open
Inconel Paddle Blind And Spacer
Ductile Iron Spectacles For Blind
Gi Spectacle Blind And Spacer
Aluminum Slip Blind Plate
Alloy Steel Piping Spectacle Blind
ASTM A105 Spectacle Blind Figure 8
A350 LF2 Spade Spacer Spectacle Blind
SS 304 Pipe Skillet Blind
316 SS Vented Blind Flanges
UNS S31803 Spade Line Blinds
A182 Gr F316 Spectacle Blind
ASTM A105 Figure 8 Spectacle Blind
316 Stainless Steel Slip Blind
Spectacle Blind Installation
Spectacle Blind Thickness
API 590 Spectacle Blind Dimensions
DN | (D) | (B) | (Q) | (L) | (T1) | (G) | (T) | (Kilogram) |
15 | 38 | 17 | 10 | 60 | 4 | 12 | 8 | 0.24 |
20 | 48 | 23 | 15 | 60 | 4 | 12 | 8 | 0.31 |
25 | 58 | 29 | 15 | 60 | 4 | 12 | 8 | 0.4 |
40 | 78 | 43 | 15 | 60 | 4 | 14 | 8 | 0.62 |
50 | 88 | 55 | 15 | 60 | 6 | 14 | 8 | 0.78 |
80 | 124 | 83 | 30 | 60 | 6 | 18 | 8 | 1.35 |
100 | 144 | 108 | 30 | 70 | 6 | 18 | 8 | 1.67 |
200 | 254 | 210 | 40 | 70 | 8 | 18 | 12 | 6.64 |
300 | 363 | 312 | 40 | 80 | 8 | 22 | 15 | 15.77 |
400 | 463 | 393 | 50 | 80 | 10 | 22 | 18 | 31.07 |
500 | 568 | 495 | 50 | 80 | 10 | 22 | 22 | 54.91 |
600 | 667 | 597 | 50 | 80 | 10 | 27 | 25 | 82.84 |
30 Inch Spectacle Blind Dimensions
Normal Size | Weights | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | F | G | 2 | 3,4 | ||
1 | 2 1/2 | 1.05 | 3 1/8 | 1/4 | 4 | 1 1/2 | ……. | 1 | 1 | 1 |
1 1/2 | 3 1/4 | 1.9 | 3 7/8 | 1/4 | 4 | 1 1/2 | …….. | 1 | 1 | 1 |
2 | 4 | 2.38 | 4 3/4 | 1/4 | 4 | 2 | …….. | 2 | 1 | 2 |
2 1/2 | 4 3/4 | 2.88 | 5 1/2 | 1/4 | 4 | 2 | …….. | 2 | 2 | 3 |
3 | 5 1/4 | 3.5 | 6 | 1/4 | 4 | 2 1/2 | …….. | 2 | 2 | 3 |
4 | 6 3/4 | 4.5 | 7 1/2 | 3/8 | 4 | 2 1/2 | …….. | 3 | 2 | 5 |
6 | 8 5/8 | 6.62 | 9 1/2 | 1/2 | 4 | 3 | …….. | 7 | 4 | 10 |
8 | 10 7/8 | 8.62 | 11 3/4 | 1/2 | 4 | 3 | ……. | 14 | 7 | 20 |
10 | 13 1/4 | 10.75 | 14 1/4 | 5/8 | 5 | 4 | ……… | 26 | 12 | 35 |
12 | 16 | 12.75 | 17 | 3/4 | 5 | 4 | …….. | 45 | 21 | 62 |
14 | 17 1/2 | 14 | 18 3/4 | 3/4 | 5 | 4 1/4 | …….. | 53 | 24 | 74 |
16 | 20 | 16 | 21 1/4 | 7/8 | 5 | 4 1/4 | 1 1/2 | 92 | 40 | 127 |
18 | 21 3/8 | 18 | 22 3/4 | 1 | 5 | 4 1/2 | 1 1/2 | 105 | 39 | 139 |
20 | 23 5/8 | 20 | 25 | 1 1/8 | 5 | 4 3/4 | 1 1/2 | 145 | 50 | 188 |
24 | 28 | 24 | 29 1/2 | 1 1/4 | 5 | 5 1/2 | 1 1/2 | 245 | 80 | 315 |
30 | 34 1/2 | 30 | 36 | 1 5/8 | 5 | 5 1/2 | 1 1/2 | 437 | 128 | 555 |
36 | 41 | 36 | 42 3/4 | 2 | 6 | 5 1/2 | 1 3/4 | 757 | 203 | 945 |
Spectacle Blind Gasket
Paddle Blind Flange Dimensions
SIZE | OD | Thickness | Weight |
---|---|---|---|
1/2 | 1-3/4 | 1/4 | 1 |
3/4 | 2-1/8 | 1/4 | 1 |
1 | 2-1/2 | 1/4 | 1 |
1-1/4 | 2-7/8 | 1/4 | 1 |
1-1/2 | 3-1/4 | 1/4 | 1 |
2 | 4 | 1/4 | 2 |
2-1/2 | 4-3/4 | 1/4 | 2 |
3 | 5-1/4 | 1/4 | 2 |
3-1/2 | 6-1/4 | 3/8 | 4 |
4 | 6-3/4 | 3/8 | 5 |
5 | 7-5/8 | 3/8 | 6 |
6 | 8-5/8 | 1/2 | 10 |
8 | 10-7/8 | 1/2 | 15 |
10 | 13-1/4 | 5/8 | 26 |
12 | 16 | 3/4 | 47 |
14 | 17-5/8 | 3/4 | 56 |
16 | 20-1/8 | 7/8 | 84 |
Slip Blind Flange Dimensions
ASME B16.48 Standard
Spectacle Blind Flange Drawing
Spectacle Blind Flange Hs Code
HS Code | Description |
---|---|
73072100 | SPECTACLE BLIND RTJ 2 CLASS 600# ASTM A240 UNS S31254 |
Spectacle Blind Flange ASME B16.48 Manufacturing Process
Raw Material
Inspection
Cutting
Forging Flanges
Heat Treatment
Forging Rolling Of Flanges
Final Inspection Of Pipe Flanges
Rust Prevention
Packaging
How To Calculation Spectacle Blind Flange Thickness?
Class 150 Spectacle Blind Flange Dimensions
Normal Pipe Size | Class 150 FLANGES | |||||
A | B | C | D | E | F | |
1/2" | 5/8 | 1-3/4 | 2-3/8 | 5/8 | 1-1/2 | 1/4 |
3/4" | 13/16 | 2-1/8 | 2-3/4 | 5/8 | 1-1/2 | 1/4 |
1" | 1-1/8 | 2-1/2 | 3-1/8 | 9/16 | 1-1/2 | 1/4 |
1-1/4" | 1-5/8 | 2-7/8 | 3-1/2 | 9/16 | 1-1/2 | 1/4 |
1-1/2" | 1-7/8 | 3-1/4 | 3-7/8 | 9/16 | 1-1/2 | 1/4 |
2" | 2-3/8 | 4 | 4-3/4 | 11/16 | 2 | 1/4 |
2-1/2" | 2-7/8 | 4-3/4 | 5-1/2 | 11/16 | 2 | 1/4 |
3" | 3-1/2 | 5-1/4 | 6 | 11/16 | 2-1/2 | 1/4 |
3-1/2" | 4 | 6-1/4 | 7 | 3/4 | 2-1/2 | 3/8 |
4" | 4-1/2 | 6-3/4 | 7-1/2 | 3/4 | 2-1/2 | 3/8 |
5" | 5-9/16 | 7-5/8 | 8-1/2 | 7/8 | 3 | 3/8 |
6" | 6-5/8 | 8-5/8 | 9-1/2 | 7/8 | 3 | 1/2 |
8" | 8-5/8 | 10-7/8 | 11-3/4 | 7/8 | 3 | 1/2 |
10" | 10-3/4 | 13-1/4 | 14-1/4 | 1 | 4 | 5/8 |
12" | 12-3/4 | 16 | 17 | 1 | 4 | 3/4 |
14" | 14 | 17-5/8 | 18-3/4 | 1-1/8 | 4-1/4 | 3/4 |
16" | 16 | 20-1/8 | 21-1/4 | 1-1/8 | 4-1/4 | 7/8 |
18" | 18 | 21-1/2 | 22-3/4 | 1-1/4 | 4-1/2 | 1 |
20" | 20 | 23-3/4 | 25 | 1-1/4 | 4-3/4 | 1-1/8 |
24" | 24 | 28-1/8 | 29-1/2 | 1-3/8 | 5-1/2 | 1-1/4 |
Class 300 Spectacle Blind Flange Dimensions
Normal Pipe Size | Class 300 FLANGES | |||||
A | B | C | D | E | F | |
1/2" | 5/8 | 2 | 2-5/8 | 5/8 | 1-1/2 | 1/4 |
3/4" | 13/16 | 2-1/2 | 3-1/4 | 3/4 | 1-1/2 | 1/4 |
1" | 1-1/8 | 2-3/4 | 3-1/2 | 11/16 | 1-1/2 | 1/4 |
1-1/4" | 1-5/8 | 3-1/8 | 3-7/8 | 11/16 | 1-1/2 | 1/4 |
1-1/2" | 1-7/8 | 3-5/8 | 4-1/2 | 7/8 | 2 | 1/4 |
2" | 2-3/8 | 4-1/4 | 5 | 3/4 | 2 | 3/8 |
2-1/2" | 2-7/8 | 5 | 5-7/8 | 7/8 | 2-1/2 | 3/8 |
3" | 3-1/2 | 5-3/4 | 6-5/8 | 7/8 | 2-1/2 | 3/8 |
3-1/2" | 4 | 6-3/8 | 7-1/4 | 7/8 | 2-1/2 | 1/2 |
4" | 4-1/2 | 7 | 7-7/8 | 7/8 | 2-1/2 | 1/2 |
5" | 5-5/8 | 8-3/8 | 9-1/4 | 7/8 | 3 | 5/8 |
6" | 6-5/8 | 9-3/4 | 10-5/8 | 7/8 | 3 | 5/8 |
8" | 8-5/8 | 12 | 13 | 1 | 3-1/2 | 7/8 |
10" | 10-3/4 | 14-1/8 | 15-1/4 | 1-1/8 | 4 | 1 |
12" | 12-3/4 | 16-1/2 | 17-3/4 | 1-1/4 | 4 | 1-1/8 |
14" | 14 | 19 | 20-1/4 | 1-1/4 | 4-3/4 | 1-1/4 |
16" | 16 | 21-1/8 | 22-1/2 | 1-3/8 | 4-7/8 | 1-1/2 |
18" | 18 | 23-3/8 | 24-3/4 | 1-3/8 | 4-1/2 | 1-5/8 |
20" | 20 | 25-5/8 | 27 | 1-3/8 | 4-3/4 | 1-3/4 |
24" | 24 | 30-3/8 | 32 | 1-5/8 | 5-1/2 | 2 |
Class 600 Spectacle Blind Flange Dimensions
Normal Pipe Size | Class 600 FLANGES | |||||
A | B | C | D | E | F | |
1/2" | 5/8 | 2 | 2-5/8 | 5/8 | 1-1/2 | 1/4 |
3/4" | 13/16 | 2-1/2 | 3-1/4 | 3/4 | 1-1/2 | 1/4 |
1" | 1-1/8 | 2-3/4 | 3-1/2 | 3/4 | 2-1/4 | 1/4 |
1-1/4" | 1-7/16 | 3-1/8 | 3-7/8 | 3/4 | 2-1/4 | 3/8 |
1-1/2" | 1-11/16 | 3-5/8 | 4-1/2 | 7/8 | 2-5/8 | 3/8 |
2" | 2-1/8 | 4-1/4 | 5 | 3/4 | 2-1/4 | 3/8 |
2-1/2" | 2-5/8 | 5 | 5-7/8 | 7/8 | 2-5/8 | 1/2 |
3" | 3-1/4 | 5-3/4 | 6-5/8 | 7/8 | 2-5/8 | 1/2 |
3-1/2" | 3-3/4 | 6-1/4 | 7-1/4 | 1 | 3 | 5/8 |
4" | 4-1/4 | 7-1/2 | 8-1/2 | 1 | 3 | 5/8 |
5" | 5-1/4 | 9-3/8 | 10-1/2 | 1-1/8 | 3-3/8 | 3/4 |
6" | 6-3/8 | 10-3/8 | 11-1/2 | 1-1/8 | 3-3/8 | 7/8 |
8" | 8-3/8 | 12-1/2 | 13-3/4 | 1-1/4 | 3-3/4 | 1-1/8 |
10" | 10-7/16 | 15-5/8 | 17 | 1-3/8 | 4-1/8 | 1-3/8 |
12" | 12-3/8 | 17-7/8 | 19-1/4 | 1-3/8 | 4-1/8 | 1-5/8 |
14" | 13-5/8 | 19-1/4 | 20-3/4 | 1-1/2 | 4-1/2 | 1-3/4 |
16" | 15-5/8 | 22-1/8 | 23-3/4 | 1-5/8 | 4-7/8 | 2 |
18" | 17-5/8 | 24 | 25-3/4 | 1-3/4 | 5-1/4 | 2-1/8 |
20" | 19-5/16 | 26-3/4 | 28-1/2 | 1-3/4 | 5-1/4 | 2-1/2 |
24" | 23-1/2 | 31 | 33 | 2 | 6 | 2-7/8 |
Class 900 Spectacle Blind Flange Dimensions
Normal Pipe Size | Class 900 FLANGES | |||||
A | B | C | D | E | F | |
1/2" | 0.625 | 2.375 | 3.25 | - | 1.50 | 1/4 |
3/4" | 0.0825 | 2.625 | 3.50 | 0.875 | 1.625 | 1/4 |
1" | 1.05 | 3.0 | 4.0 | 1.0 | 2.25 | 1/4 |
1-1/4" | 1.44 | 3.375 | 4.375 | 1.0 | 2.25 | 3/8 |
1-1/2" | 1.68 | 3.5 | 4.875 | 1.125 | 2.625 | 3/8 |
2" | 2.16 | 5.5 | 6.5 | 1.0 | 2.25 | 1/2 |
2-1/2" | 2.64 | 6.375 | 7.5 | 1.125 | 2.625 | 1/2 |
3" | 3.25 | 6.5 | 7.5 | 1.0 | 2.625 | 5/8 |
4" | 4.25 | 8.0 | 9.25 | 1.25 | 3.0 | 3/4 |
5" | 5.3 | 9.625 | 11.0 | 1.375 | 3.375 | 7/8 |
6" | 6.36 | 11.25 | 12.5 | 1.25 | 3.375 | 1 |
8" | 8.33 | 14.0 | 15.5 | 1.5 | 3.75 | 1-3/8 |
10" | 10.42 | 17.0 | 18.5 | 1.5 | 4.125 | 1-5/8 |
12" | 12.39 | 19.5 | 21.0 | 1.5 | 4.125 | 1-7/8 |
14" | 13.62 | 20.375 | 22.0 | 1.625 | 4.5 | 2-1/8 |
16" | 15.62 | 22.5 | 24.25 | 1.75 | 4.875 | 2-3/8 |
18" | 17.62 | 25.0 | 27.0 | 2.0 | 5.25 | 2-5/8 |
20" | 19.56 | 27.375 | 29.5 | 2.125 | 5.25 | 2-7/8 |
24" | 23.5 | 32.875 | 35.5 | 2.625 | 6.0 | 3-1/2 |
Class 1500 Spectacle Blind Flange Dimensions
Normal Pipe Size | Class 1500 FLANGES | |||||
A | B | C | D | E | F | |
1/2" | 0.625 | 2.375 | 3.25 | - | 1.50 | 1/4 |
3/4" | 0.82 | 2.625 | 3.50 | 0.875 | 1.625 | 3/8 |
1" | 1.05 | 3.0 | 4.0 | 1.0 | 2.5 | 3/8 |
1-1/4" | 1.375 | 3.375 | 4.375 | 1.0 | 2.5 | 3/8 |
1-1/2" | 1.61 | 3.75 | 4.875 | 1.125 | 2.75 | 1/2 |
2" | 2.07 | 5.5 | 6.5 | 1.0 | 2.75 | 1/2 |
2-1/2" | 2.47 | 6.375 | 7.5 | 1.125 | 3.0 | 5/8 |
3" | 3.07 | 6.75 | 8.0 | 1.25 | 3.0 | 3/4 |
4" | 4.03 | 8.125 | 9.5 | 1.375 | 3.5 | 7/8 |
5" | 5.05 | 9.875 | 11.5 | 1.625 | 3.5 | 1-1/8 |
6" | 6.06 | 11.0 | 12.5 | 1.5 | 3.5 | 1-3/8 |
8" | 7.98 | 13.75 | 15.5 | 1.75 | 4.0 | 1-5/8 |
10" | 10.02 | 17.0 | 19.0 | 2.0 | 4.5 | 2 |
12" | 11.94 | 20.375 | 22.5 | 2.125 | 4.5 | 2-3/8 |
14" | 13.12 | 22.625 | 25.0 | 2.375 | 5.0 | 2-5/8 |
16" | 15.0 | 25.125 | 27.75 | 2.625 | 5.25 | 3 |
18" | 16.88 | 27.625 | 30.5 | 2.875 | 5.75 | 3-3/8 |
20" | 18.81 | 29.625 | 32.75 | 3.125 | 6.0 | 3-3/4 |
24" | 22.62 | 35.375 | 39.0 | 3.625 | 7.0 | 4-3/8 |
Class 2500 Spectacle Blind Flange Dimensions
Normal Pipe Size | Class 2500 FLANGES | |||||
A | B | C | D | E | F | |
1/2" | 0.625 | 2.625 | 3.5 | - | 1.50 | 3/8 |
3/4" | 0.82 | 2.875 | 3.75 | 0.875 | 1.625 | 3/8 |
1" | 1.05 | 3.25 | 4.25 | 1.0 | 2.5 | 3/8 |
1-1/4" | 1.38 | 4.0 | 5.125 | 1.125 | 2.5 | 1/2 |
1-1/2" | 1.61 | 4.5 | 5.75 | 1.25 | 2.75 | 5/8 |
2" | 2.07 | 5.625 | 6.75 | 1.125 | 2.75 | 5/8 |
2-1/2" | 2.47 | 6.5 | 7.75 | 1.25 | 3.0 | 3/4 |
3" | 3.07 | 7.625 | 9.0 | 1.375 | 3.0 | 7/8 |
4" | 4.03 | 9.125 | 10.75 | 1.625 | 3.5 | 1-1/8 |
5" | 5.05 | 10.875 | 12.75 | 1.875 | 3.5 | 1-3/8 |
6" | 6.06 | 12.375 | 14.5 | 2.125 | 3.5 | 2 |
8" | 7.81 | 15.125 | 17.25 | 2.125 | 4.0 | 2-1/8 |
10" | 9.75 | 18.625 | 21.25 | 2.625 | 4.5 | 2-5/8 |
12" | 11.37 | 21.5 | 24.375 | 2.875 | 4.5 | 3-1/8 |
ASME B16.48 Facing Types
Figure 8 Spectacle Blind Marking Method
The marking shall be applied by steel stamping or other marking device that leaves a legible imprint. When marking on the blind portion of the blanks, low stress marking shall be used and shall not impinge on the gasket seating surface.
Dimensions Of Class 150 Blanks For Use With Raised Face Flanges
Dimensions Of Class 150 Female Ring-Joint Facing Figure-8 Blanks
Dimensions Of Class 150 Male Ring-Joint Facing Figure-8 Blanks
Blank Flange Vs. Blind Flange
Blank flange : are used to seal the end of a pipe line or fittings.
Blind flange : is basically a flange that does not have a hub or a bored center.
Spectacle Blind Flange Purpose