12 inch ASME B16.48 Spectacle Blind Dimensions (Figure-8)
12 inch (DN 300) to ASME B16.48: Outside dia 406 mm; Inside dia 324 mm; Centre line 430 mm; Thickness 19.1 mm; Web width 102 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
12 inch ASME B16.48 Spectacle Blind Dimensions (Figure-8) — all dimensions
Spectacle blind, RF — Class 150 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Outside dia — A | 406 mm | 15.98 in |
| Inside dia — B | 324 mm | 12.76 in |
| Centre line — C | 430 mm | 16.93 in |
| Thickness — t | 19.1 mm | 0.752 in |
| Web width — W | 102 mm | 4.02 in |
Spectacle blind, RF — Class 300 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Outside dia — A | 419 mm | 16.50 in |
| Inside dia — B | 324 mm | 12.76 in |
| Centre line — C | 450 mm | 17.72 in |
| Thickness — t | 28.4 mm | 1.12 in |
| Web width — W | 102 mm | 4.02 in |
Spectacle blind, RF — Class 600 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Outside dia — A | 454 mm | 17.87 in |
| Inside dia — B | 315 mm | 12.40 in |
| Centre line — C | 490 mm | 19.29 in |
| Thickness — t | 41.1 mm | 1.62 in |
| Web width — W | 105 mm | 4.13 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
12 inch ASME B16.48 Spectacle Blind Dimensions (Figure-8): common questions
What are the 12 inch ASME B16.48 Spectacle Blind Dimensions (Figure-8)?
12 inch (DN 300) to ASME B16.48: Outside dia 406 mm; Inside dia 324 mm; Centre line 430 mm; Thickness 19.1 mm; Web width 102 mm.
Does Teshi Group supply 12 inch products?
Yes. Teshi Group stocks and supplies products to ASME B16.48 from India, with mill test certificates.
Can I download the 12 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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