18 inch ASME B16.48 Spectacle Blind Dimensions (Figure-8)
18 inch (DN 450) to ASME B16.48: Outside dia 546 mm; Inside dia 457 mm; Centre line 580 mm; Thickness 25.4 mm; Web width 114 mm.
Key to dimensions
- A
- Outside diameter of blank and ring
- B
- Inside diameter of the ring (spacer) end
- C
- Centre line distance between blank and ring
- t
- Thickness
- W
- Web (tie bar) width
18 inch ASME B16.48 Spectacle Blind Dimensions (Figure-8) — all dimensions
Spectacle blind, RF — Class 150 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Outside dia — A | 546 mm | 21.50 in |
| Inside dia — B | 457 mm | 17.99 in |
| Centre line — C | 580 mm | 22.83 in |
| Thickness — t | 25.4 mm | 1.00 in |
| Web width — W | 114 mm | 4.49 in |
Spectacle blind, RF — Class 300 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Outside dia — A | 594 mm | 23.39 in |
| Inside dia — B | 457 mm | 17.99 in |
| Centre line — C | 630 mm | 24.80 in |
| Thickness — t | 41.1 mm | 1.62 in |
| Web width — W | 114 mm | 4.49 in |
Spectacle blind, RF — Class 600 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Outside dia — A | 610 mm | 24.02 in |
| Inside dia — B | 448 mm | 17.64 in |
| Centre line — C | 655 mm | 25.79 in |
| Thickness — t | 53.8 mm | 2.12 in |
| Web width — W | 133 mm | 5.24 in |
Values are nominal, from ASME B16.48 Spectacle Blind Dimensions (Figure-8). Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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FAQ
18 inch ASME B16.48 Spectacle Blind Dimensions (Figure-8): common questions
What are the 18 inch ASME B16.48 Spectacle Blind Dimensions (Figure-8)?
18 inch (DN 450) to ASME B16.48: Outside dia 546 mm; Inside dia 457 mm; Centre line 580 mm; Thickness 25.4 mm; Web width 114 mm.
Does Teshi Group supply 18 inch products?
Yes. Teshi Group stocks and supplies products to ASME B16.48 from India, with mill test certificates.
Can I download the 18 inch dimensions as a PDF?
Yes. Use “Download PDF for this size” on this page to get a single-size, print-ready PDF with the drawing and every tabulated dimension, or download the full ASME B16.48 Spectacle Blind Dimensions (Figure-8) chart.
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