ASME B16.5 Class 1500 Spectacle Blind Flanges are vital components used to isolate sections of pipelines or equipment in high-pressure systems. Also known as Figure 8 Blanks #1500, these flanges offer a reliable method for blocking off or allowing flow within a piping system, especially during maintenance or shutdowns. At Tesco Steel & Engineering, we manufacture premium-quality spectacle blind flanges that comply with ASME B16.5 standards and are engineered for consistent performance in demanding industrial environments.
Our high-tech Bhayandar manufacturing facility is equipped with cutting-edge machinery, automated fabrication lines, and stringent quality control systems, ensuring every Class 1500 spectacle blind flange is precise, durable, and corrosion-resistant. Tesco Steel & Engineering is known for producing components that deliver exceptional mechanical strength and tight sealing capabilities. The advanced production setup allows us to meet both standard and customized specifications with short lead times and uncompromising quality.
Tesco Steel & Engineering is a global exporter of ASME B16.5 Class 1500 spectacle blind flanges, supplying to countries including the USA, UK, Germany, Italy, Saudi Arabia, UAE, and Qatar. Our products are widely used in sectors such as oil & gas, chemical processing, marine engineering, power generation, and offshore drilling. With a strong focus on international quality standards, reliable logistics, and customer-centric service, we have become a trusted partner to clients around the world seeking high-performance piping solutions.
| NPS | Outside Ø A |
Inside Ø B |
Centerline C |
Thickness t |
Web Width W |
| 1/2 | 61 | 16 | 80 | 6.4 | 38 |
| 3/4 | 67 | 21 | 90 | 9.7 | 41 |
| 1 | 76 | 27 | 100 | 9.7 | 64 |
| 1¼ | 86 | 35 | 110 | 9.7 | 64 |
| 1½ | 95 | 41 | 125 | 12.7 | 70 |
| 2 | 140 | 53 | 165 | 12.7 | 70 |
| 2½ | 162 | 63 | 190 | 15.7 | 76 |
| 3 | 172 | 78 | 205 | 19.1 | 76 |
| 4 | 206 | 102 | 240 | 22.4 | 89 |
| 5 | 251 | 128 | 290 | 28.4 | 89 |
| 6 | 279 | 154 | 320 | 35.1 | 89 |
| 8 | 349 | 203 | 395 | 41.1 | 102 |
| 10 | 432 | 255 | 480 | 50.8 | 114 |
| 12 | 518 | 303 | 570 | 60.5 | 114 |
| 14 | 575 | 333 | 635 | 66.5 | 127 |
| 16 | 638 | 381 | 705 | 76.2 | 133 |
| 18 | 702 | 429 | 775 | 85.9 | 146 |
| 20 | 752 | 478 | 830 | 95.3 | 152 |
| 24 | 899 | 575 | 990 | 111.3 | 178 |