ASME B16.48 Class 600 Spectacle Blind are highly reliable components used to isolate sections of piping systems in high-pressure and high-temperature environments. Also recognized as Figure 8 Blanks #600, these spectacle blinds are widely used where frequent maintenance, inspection, or flow regulation is required. At Tesco Steel & Engineering, we manufacture these spectacle blind using premium raw materials and advanced technology, ensuring outstanding durability, precise dimensions, and leak-proof performance.
Our ASME B16.48 spectacle blind 600 class are trusted across diverse industries such as oil & gas, petrochemicals, chemical processing, marine engineering, and power plants. With a strong global presence, we proudly export to countries like the USA, UK, Germany, Italy, Saudi Arabia, UAE, and Oman, supplying to projects that demand high-quality and dependable piping solutions. The versatility of these spectacle blinds makes them essential in refineries, offshore platforms, natural gas processing plants, and large-scale industrial installations.
Backed by our state-of-the-art Mumbai factory, equipped with modern machinery and highly skilled professionals, Tesco Steel & Engineering ensures consistent excellence in every flange produced. Known for superior quality and international standards compliance, our spectacle blind class 600 are the first choice for engineers and project managers worldwide. Their main applications include shutting off pipelines during maintenance, providing safety in high-pressure systems, and ensuring smooth operation across various critical industries.
| 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 |