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SPECTACLE FLANGES

Spectacle Blind Flanges are widely used in special circumstances with their main advantage being that they can be attached to the pipe without welding. our range of Spectacle Blind flanges can also manufactured as per the customer's requirement. We also accept any Third Party of Inspection appointed by our customers, such as Lloyd's Register, TUV, DNV, BV, SGS, IEI, SAI and etc.

SPECTACLE BLIND FLANGES SPECIFICATION :

Standard - ANSI/ASME : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48

DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673

B.S : BS4504, BS4504, BS1560, BS10

Size : 1/2" (15 NB) to 48" (1200NB)

Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.

Specialize :As per drawing



SPECTACLE BLIND FLANGES MATERIAL & GRADES :

Stainless Steel Spectacle Blind Flanges : ASTM A182, A240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L

Carbon Steel Spectacle Blind Flanges : ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70

Alloy Steel Spectacle Blind Flanges : ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91

Duplex Steel Spectacle Blind Flanges : ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61

Super Duplex Spectacle Blind Flanges : ASTM / ASME A/SA 182, A240 F 44, F 45, F51, F 53, F 55, F 60, F 61

Nickel Alloy Spectacle Blind Flanges : Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II)

Copper Alloy Spectacle Blind Flanges : UNS No. C10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, UNS No. C 70600 (Cu -Ni- 90/10), C 71500 (Cu-Ni-70/30)

Low Temperature Carbon Steel Spectacle Blind Flanges : ASTM A350, LF2, LF3


Spectacle Blind Flanges Dimension

spectacle blind flanges dimensions

150 Class spectacle blind flanges:

NPS Outside Ø
A		 Inside Ø
B		 Centerline
C		 Thickness
t		 Web Width
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
NPS Outside Ø
A		 Inside Ø
B		 Centerline
C		 Thickness
t		 Web Width
W

300 Class spectacle blind flanges:

NPS Outside Ø
A		 Inside Ø
B		 Centerline
C		 Thickness
t		 Web Width
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
NPS Outside Ø
A		 Inside Ø
B		 Centerline
C		 Thickness
t		 Web Width
W

600 Class spectacle blind flanges:

NPS Outside Ø
A		 Inside Ø
B		 Centerline
C		 Thickness
t		 Web Width
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
NPS Outside Ø
A		 Inside Ø
B		 Centerline
C		 Thickness
t		 Web Width
W

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