ASME B16.5 Class 400 weld neck flanges are expertly designed for robust performance in demanding piping systems, offering exceptional durability and pressure resistance. Tesco Steel & Engineering, a premier manufacturer, produces these flanges with meticulous attention to ASME B16.5 standards, ensuring top-tier quality for critical applications. Ideal for industries like oil and gas, chemical processing, and power plants, our Class 400 weld neck flanges provide secure, leak-free connections under moderate to high-pressure conditions. With Tesco Steel & Engineering, you get high-quality ASME B16.5 flanges engineered for reliability and long-lasting performance.
Tesco Steel & Engineering exports its ASME B16.5 Class 400 weld neck flanges to key global markets, including the United States, United Kingdom, France, Kuwait, Oman, and Bahrain. Serving a wide array of industries such as petrochemicals, water treatment, and offshore drilling, our flanges are trusted for their precision and strength. We utilize advanced manufacturing processes and premium materials to ensure each flange meets rigorous quality standards. This commitment to excellence makes Tesco Steel a go-to supplier for businesses worldwide seeking dependable ASME B16.5 Class 400 weld neck flanges for their projects.
Our ASME B16.5 Class 400 weld neck flanges stand out for their superior craftsmanship and adaptability, reflecting Tesco Steel & Engineering’s dedication to delivering industry-leading products. Available in various materials like stainless steel, carbon steel, and specialty alloys, these flanges are tailored to meet diverse project specifications. Each flange is subjected to stringent quality checks to ensure compliance with global standards, guaranteeing performance in challenging environments. By exporting to Western and Middle Eastern countries and supporting multiple industries, Tesco Steel & Engineering remains a trusted partner for high-quality ASME B16.5 weld neck flanges that combine durability and precision.
| Size in Inch | Size in mm | Outer Diameter | Flange Thickness | Hub OD | Weld Neck OD | Welding Neck Length | Bore | RF Diameter | RF Height | PCD | Weld Face |
| A | B | C | D | E | F | G | H | I | J | ||
| 1/2 | 15 | 95 | 14.3 | 38 | 21.3 | 52 | According to Schedule | 34.9 | 7 | 66.7 | 1.6 |
| 3/4 | 20 | 115 | 15.9 | 48 | 26.7 | 57 | 42.9 | 7 | 82.6 | 1.6 | |
| 1 | 25 | 125 | 17.5 | 54 | 33.4 | 62 | 50.8 | 7 | 88.9 | 1.6 | |
| 1 1/4 | 32 | 135 | 20.7 | 64 | 42.2 | 67 | 63.5 | 7 | 98.4 | 1.6 | |
| 1 1/2 | 40 | 155 | 22.3 | 70 | 48.3 | 70 | 73 | 7 | 114.3 | 1.6 | |
| 2 | 50 | 165 | 25.4 | 84 | 60.3 | 73 | 92.1 | 7 | 127 | 1.6 | |
| 2 1/2 | 65 | 190 | 28.6 | 100 | 73 | 79 | 104.8 | 7 | 149.2 | 1.6 | |
| 3 | 80 | 210 | 31.8 | 117 | 88.9 | 83 | 127 | 7 | 168.3 | 1.6 | |
| 3 1/2 | 90 | 230 | 35 | 133 | 101.6 | 86 | 139.7 | 7 | 184.2 | 1.6 | |
| 4 | 100 | 255 | 35 | 146 | 114.3 | 89 | 157.2 | 7 | 200 | 1.6 | |
| 5 | 125 | 280 | 38.1 | 178 | 141.3 | 102 | 185.7 | 7 | 235 | 1.6 | |
| 6 | 150 | 320 | 41.3 | 206 | 168.3 | 103 | 215.9 | 7 | 269.9 | 1.6 | |
| 8 | 200 | 380 | 47.7 | 260 | 219.1 | 117 | 269.9 | 7 | 330 | 1.6 | |
| 10 | 250 | 445 | 54 | 321 | 273 | 124 | 323.8 | 7 | 387.4 | 1.6 | |
| 12 | 300 | 520 | 57.2 | 375 | 323.8 | 137 | 381 | 7 | 450.8 | 1.6 | |
| 14 | 350 | 585 | 60.4 | 425 | 355.6 | 149 | 412.8 | 7 | 514.4 | 1.6 | |
| 16 | 400 | 650 | 63.5 | 483 | 406.4 | 152 | 469.9 | 7 | 571.5 | 1.6 | |
| 18 | 450 | 710 | 66.7 | 533 | 457 | 165 | 533.4 | 7 | 628.6 | 1.6 | |
| 20 | 500 | 775 | 69.9 | 587 | 508 | 168 | 584.2 | 7 | 685.8 | 1.6 | |
| 24 | 600 | 915 | 76.2 | 702 | 610 | 175 | 692.2 | 7 | 812.8 | 1.6 |
| Size in Inch | Size in mm | No of Bolts | Bolt Size UNC | RF Stud Length | Hole Size | ISO Stud Size |
| 1/2 | 15 | 4 | 1/2 | 75 | 5/8 | M14 |
| 3/4 | 20 | 4 | 5/8 | 90 | 3/4 | M16 |
| 1 | 25 | 4 | 5/8 | 90 | 3/4 | M16 |
| 1 1/4 | 32 | 4 | 5/8 | 95 | 3/4 | M16 |
| 1 1/2 | 40 | 4 | 3/4 | 110 | 7/8 | M20 |
| 2 | 50 | 8 | 5/8 | 110 | 3/4 | M16 |
| 2 1/2 | 65 | 8 | 3/4 | 120 | 7/8 | M20 |
| 3 | 80 | 8 | 3/4 | 125 | 7/8 | M20 |
| 3 1/2 | 90 | 8 | 7/8 | 140 | 1 | M24 |
| 4 | 100 | 8 | 7/8 | 140 | 1 | M24 |
| 5 | 125 | 8 | 7/8 | 145 | 1 | M24 |
| 6 | 150 | 12 | 7/8 | 150 | 1 | M24 |
| 8 | 200 | 12 | 1 | 170 | 1 1/8 | M27 |
| 10 | 250 | 16 | 1 1/8 | 190 | 1 1/4 | M30 |
| 12 | 300 | 16 | 1 1/4 | 205 | 1 3/8 | M33 |
| 14 | 350 | 20 | 1 1/4 | 210 | 1 3/8 | M33 |
| 16 | 400 | 20 | 1 3/8 | 220 | 1 1/2 | M36 |
| 18 | 450 | 24 | 1 3/8 | 230 | 1 1/2 | M36 |
| 20 | 500 | 24 | 1 1/2 | 240 | 1 3/4 | M39 |
| 24 | 600 | 24 | 1 3/4 | 265 | 1 7/8 | M45 |
| Class #150 Weld Neck Flange |
| Class #300 Weld Neck Flange |
| Class #400 Weld Neck Flange |
| Class #600 Weld Neck Flange |
| Class #900 Weld Neck Flange |
| Class #1500 Weld Neck Flange |
| Class #2500 Weld Neck Flange |
Countries we export to: Manufacturers / Suppliers / Stockist of ANSI ASME B16.5 Class 400 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.
Major Exporting Areas: ASME B16.5 CLass 400 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.