SPECTACLE BLIND FLANGE

Specification of SPECTACLE BLIND FLANGE

SPECTACLE BLIND FLANGE

SPECTACLE SPECIFICATIONS BLIND FLANGE:

Origin Country: Japan

Size: 1/2 "~ 64"

Material: Carbon Steel ASTM A-516 Gr.70 / A-105

Standard: ASME B16.48

Place of Origin: Indonesia / Japan

Model Number: SPECTACLE BLIND

Standard or Nonstandard: Standard Coating: BLACK PAINTING or Customer Request

ASME B16.48 covers pressure-temperature ratings, materials, dimensions, dimensional tolerances, marking and testing for operating line blanks in sizes NPS 1/2 - NPS 24 for installation between ASME B16.5 flanges in the 150, 300, 600, 900, 1500, and 2500 Pressure Classes.

Spectacle Blinds, Spades and Ring Spacers should be made from a plate or forging specification, approved for use by ASME B31.3, of essentially the same chemical composition as the mating flanges and piping involved.

Dimensions Spectacle Blinds - ASME B16.48

Class 150

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

1.1 / 4 73 42 90 6.4 38

1.1 / 2 83 48 100 6.4 38

2 102 61 120 6.4 51

2.1 / 2 107 73 140 6.4 51

3 133 89 150 6.4 64

3.1 / 2 159 102 175 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

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