ASME B16.47 Series B Class 300 blind flanges are critical components used to seal off the ends of large-diameter piping systems in medium-pressure applications. These flanges are designed to withstand higher operating pressures while providing a reliable, leak-proof seal, making them ideal for use in the oil & gas, petrochemical, water treatment, and power generation industries. Tesco Steel & Engineering manufactures these blind flanges with precision and strict adherence to ASME standards, ensuring consistent performance in even the most demanding environments.
At Tesco Steel & Engineering, our Series B Class 300 blind flanges are manufactured using premium quality raw materials, including stainless steel, carbon steel, and alloy steels, depending on client requirements. Each flange is produced using advanced CNC machining and tested thoroughly for pressure integrity, dimensional accuracy, and surface finish. This commitment to quality control and engineering excellence has established Tesco as a globally respected supplier of industrial flanges that meet and exceed international standards.
Tesco Steel & Engineering proudly exports ASME B16.47 Series B Class 300 blind flanges to several countries including the United States, Germany, Spain, Saudi Arabia, the UAE, and Qatar. Our products are used across various industries such as chemical processing, energy infrastructure, and marine engineering. With an unwavering focus on customer satisfaction and technical reliability, Tesco continues to be the trusted flange manufacturer for large-scale international projects across both Western and Middle Eastern markets.

| Pipe Normal Diam. | O.D. OF Flange |
Thickness | Raised Face Diam. |
Diam. of Bolt Circle |
No. of Bolt Holes |
Diam. of Bolt Holes |
Diam. of Bolt |
Fillet Radius Min. |
|---|---|---|---|---|---|---|---|---|
| inch | O | C | R | BD | BN | BH | DB | r1 |
| 26" | 866.6 | 88.9 | 736.6 | 803.1 | 32 | 35.1 | 1 1/4 | 14.2 |
| 28" | 920.8 | 88.9 | 787.4 | 857.3 | 36 | 35.1 | 1 1/4 | 14.2 |
| 30" | 990.6 | 93.7 | 844.6 | 920.8 | 36 | 38.1 | 1 3/8 | 14.2 |
| 32" | 1054.1 | 103.1 | 901.7 | 977.9 | 32 | 41.1 | 1 1/2 | 15.7 |
| 34" | 1107.9 | 103.1 | 952.5 | 1031.7 | 36 | 41.1 | 1 1/2 | 15.7 |
| 36" | 1171.4 | 103.1 | 1009.7 | 1089.2 | 32 | 44.5 | 1 5/8 | 15.7 |
| 38" | 1222.2 | 111.3 | 1060.5 | 1140 | 36 | 44.5 | 1 5/8 | 15.7 |
| 40" | 1273 | 115.8 | 1114.6 | 1190.8 | 40 | 44.5 | 1 5/8 | 15.7 |
| 42" | 1333.5 | 119.1 | 1168.4 | 1244.6 | 36 | 47.8 | 1 3/4 | 15.7 |
| 44" | 1384.3 | 127 | 1219.2 | 1295.4 | 40 | 47.8 | 1 3/4 | 15.7 |
| 46" | 1460.5 | 130 | 1270 | 1365.3 | 36 | 50.8 | 1 7/8 | 15.7 |
| 48" | 1511.3 | 134.9 | 1327.2 | 1416.1 | 40 | 50.8 | 1 7/8 | 15.7 |
| 50" | 1562.1 | 139.7 | 1378 | 1466.9 | 44 | 50.8 | 1 7/8 | 15.7 |
| 52" | 1612.9 | 144.3 | 1428.8 | 1517.7 | 48 | 50.8 | 1 7/8 | 15.7 |
| 54" | 1673.4 | 149.4 | 1479.6 | 1577.8 | 48 | 50.8 | 1 7/8 | 15.7 |
| 56" | 1765.3 | 157 | 1536.7 | 1651 | 36 | 60.5 | 2 1/4 | 17.5 |
| 58" | 1827.3 | 162.1 | 1593.9 | 1713 | 40 | 60.5 | 2 1/4 | 17.5 |
| 60" | 1878.1 | 166.6 | 1651 | 1763.8 | 40 | 60.5 | 2 1/4 | 17.5 |
Countries we export to: ANSI / ASME B16.47 Series B Class 300 Blind Flanges Manufacturers / Suppliers / Stockist in Kuwait, in UAE, in Germany, Saudi Arabia, West Africa, Iraq, Congo, Mexico, Bahra, Canada, Philippes, Thailand, Kenya, Oman, Malaysia, Turkey, Qatar, Sudan, Netherlands, Oman, Nigeria, Lithuania, Gabon, Russia, Vietnam, Angola, Bolivia, Indonesia, UK, Yemen, Italy, United States, Venezuela, Spain, Iran, Estonia, Kazakhstan, Algeria, Jordan, Ecuador, Portugal, Colombia, Libya, Chile, Peru, Iran, South Africa, Bangkok, Namibia, Jeddah, Afghanistan, Israel, Zambia, Macau, Morocco, Denmark, Taiwan, Norway, Belarus, North Macedonia, Lebanon, Sri Lanka, Bhutan, Bulgaria, Albania, Ukrae, Belgium, Fland, Slovokia, Tibet, Romania, France, Brazil, Tridad & Tobago, Fiji, Tunisia, Gambia, Mexico, Hungary, Zimbabwe, Mongolia, Ghana, Egypt, Kazakhstan, Czech Republic, Azerbaijan, Poland, Greece, Costa Rica, Kosovo, New Zealand, Croatia, Puerto Rico, Tanzania, Somalia.
Major Exporting Areas: ANSI / ASME B16.47 Series B Class 300 Blind Flanges Manufacturers / Suppliers / Stockist Manufacturers / Suppliers / Stockist in Moscow, Port-Of-Spain, Seoul, Montreal, Dubai, Kuala Lumpur, Aberdeen, Tehran, Bogota, Petaling Jaya, Melbourne, Abu Dhabi, Courbevoie, Edmonton, Ho Chi Minh City, Bangkok, Toronto, Muscat, Milan, Busan, Mexico City, Perth, La Victoria, Santiago, Rio de Janeiro, London, Karachi, Los Angeles, Manama, Geoje-si, Atyrau, Sydney, Riyadh, New York, Jeddah, Houston, Granada, Jakarta, Brisbane, Algiers, Kuwait City, Dubai, Hanoi, Doha, Al Jubail, Chiyoda, Cairo, Gimhae-si, Caracas, Lagos, Al Khobar, Madrid, Singapore, Calgary, Colombo, Ulsan, Istanbul, Ahvaz, Dammam, Dallas, Texas, Ankara, Sharjah, Vung Tau, Angola, Benin, Burundi, Botswana, Burkina Faso, Cameroon, Douala, Central African Republic, Republic of Congo, Democratic Republic of Congo, Côte d'Ivoire, Djibouti, Eritrea, Ethiopia, Equatorial Guinea, Gabon, Guinea, Kenya, Liberia,Malawi, Mali, Mauritania, Mauritius, Casablanca-Settat, Tanger-Tetouan-Al Hoceima, Fès-Meknès, Marrakesh-Safi, Oriental, Béni Mellal-Khénifra, Souss-Massa, Laâyoune-Sakia El Hamra, Rabat-Salé-Kénitra region, Mozambique, Temara, Niger, Rwanda, Senegal, Sierra Leone, Sudan, Tanzania, Togo, Uganda, Bangkok, Bangchan, Khlong Sam Wa, Gemopolis, Lard Krabang, Pathumthani, Bangkadi, Navanakorn, Samut Prakarn, Bangplee, Bangpoo, Saraburi, Nongkhae, SIL I/Land, Chachoengsao, 304 I/P, Gateway City, Wellgrow, Rayong, Amata City, Eastern Seaboard, Hemaraj Eastern Seaboard, Rojana, Soam Eastern, Chonburi, Amata Nakorn, Hemaraj Chonburi, Pinthong, Ayutthaya, Bangpa-in, Saha Ratna Nakorn, Nakornratchasima, Kabinburi, Prachinburi, HCMC, Tan Thuan Export Processing Zone, Bien Hoa, Dong Nai Province, Amata City Bien Hoa Industrial Park, Long Binh Techno Park, Binh Duong Province, Vietnam Singapore Industrial Park, My Phuoc Industrial Park, Ho Nai Industrial Zone, Bau Xeo Industrial Park, Long Thanh Industrial Zone, Long Duc Industrial Park, Duc Hao I, Tan Huong, Long Jiang, Tra Noc I/II, Hung Phu I, Hiep Phuoc Industrial Park, Phuoc Dong Industrial Park, Dinh Vu – Cat Hai Economic Zone.