ASME B16.47 Series B Class 300 weld neck flanges are designed for large-diameter, high-pressure piping systems where strength, structural integrity, and leak prevention are paramount. These flanges are characterized by their long tapered hub and smooth transition from flange to pipe, reducing stress concentrations and improving durability under cyclic loading. Tesco Steel & Engineering manufactures high-performance Series B Class 300 weld neck flanges that meet rigorous ASME specifications and offer reliable performance in critical applications.
Tesco Steel & Engineering is renowned for its superior manufacturing capabilities, consistently delivering top-quality weld neck flanges with precise tolerances, uniform dimensions, and exceptional surface finishes. Our flanges are fabricated using premium grades of stainless steel, carbon steel, and alloy steel to suit varying project requirements. Whether used in offshore drilling, power plants, or chemical refineries, our ASME B16.47 flanges are trusted by professionals for their long service life and flawless performance.
We proudly export ASME B16.47 Series B Class 300 weld neck flanges to clients across the United States, Canada, Germany, Italy, Saudi Arabia, Oman, and the UAE. Our products are widely used across industries such as oil & gas, water treatment, petrochemical, and shipbuilding. Tesco Steel & Engineering continues to lead the market with its commitment to quality, global logistics support, and engineering expertise, making us the preferred flange supplier for both Western and Middle Eastern infrastructure projects.
| NPS | OD | D | B | H | A | G | K | L | No of Bolts |
Stud Bolt Dia x L |
|
| 26 | 665.2 | 865 | 89 | 169.6 | 702 | 737 | 803.3 | 34.9 | 32 | 1.1/4 | 260 |
| 28 | 716 | 920 | 89 | 149.6 | 756 | 787 | 857.2 | 34.9 | 36 | 1.1/4 | 260 |
| 30 | 768.4 | 990 | 93.7 | 157.6 | 813 | 845 | 920.8 | 38.1 | 36 | 1.3/8 | 273 |
| 32 | 819.2 | 1055 | 103.2 | 168.6 | 864 | 902 | 977.9 | 41.3 | 32 | 1.1/2 | 298 |
| 34 | 870 | 1110 | 103.2 | 172.6 | 918 | 953 | 1031.9 | 41.3 | 36 | 1.1/2 | 298 |
| 36 | 920.8 | 1170 | 103.2 | 180.6 | 965 | 1010 | 1089 | 44.5 | 32 | 1.3/8 | 305 |
| 38 | 971.6 | 1220 | 111.2 | 191.6 | 1016 | 1060 | 1139.8 | 44.5 | 36 | 1.3/8 | 324 |
| 40 | 1022.4 | 1275 | 115.9 | 198.6 | 1067 | 1114 | 1190.6 | 44.5 | 40 | 1.5/8 | 330 |
| 42 | 1074.7 | 1335 | 119.1 | 204.6 | 1118 | 1168 | 1244.6 | 47.6 | 36 | 1.3/4 | 343 |
| 44 | 1125.5 | 1385 | 127.1 | 214.6 | 1173 | 1219 | 1295.4 | 47.6 | 40 | 1.3/4 | 362 |
| 46 | 1176.3 | 1460 | 128.6 | 222.6 | 1229 | 1270 | 1365.2 | 50.8 | 36 | 1.7/8 | 368 |
| 48 | 1227.1 | 1510 | 128.6 | 223.6 | 1278 | 1327 | 1416 | 50.8 | 40 | 1.7/8 | 368 |
| 50 | 1277.9 | 1560 | 138.2 | 234.6 | 1330 | 1378 | 1466.8 | 50.8 | 44 | 1.7/8 | 387 |
| 52 | 1328.7 | 1615 | 142.9 | 242.6 | 1383 | 1429 | 1517.6 | 50.8 | 48 | 1.7/8 | 400 |
| 54 | 1379.5 | 1675 | 136.6 | 239.6 | 1435 | 1480 | 1578 | 50.8 | 48 | 1.7/8 | 387 |
| 56 | 1430.3 | 1765 | 154 | 268.6 | 1494 | 1537 | 1651 | 60.3 | 36 | 2.1/4 | 438 |
| 58 | 1481.1 | 1825 | 154 | 274.6 | 1548 | 1594 | 1712.9 | 60.3 | 40 | 2.1/4 | 438 |
| 60 | 1557.3 | 1880 | 150.9 | 271.6 | 1599 | 1651 | 1763.7 | 60.3 | 40 | 2.1/4 | 432 |
Countries we export to: ANSI ASME B16.47 Series B Class 300 Weld Neck 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.
Domestic: ASME B16.47 Series B CLass 300 Weld Neck Flanges 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.