Kyoga Flanges is a trusted manufacturer and supplier based in Bedok, Singapore, delivering high-integrity flange solutions for critical industrial applications. Among its premium products are API Type 6B Welding Neck Flanges rated at 5,000 PSI, designed in accordance with API specifications for high-pressure service. These flanges are engineered for superior strength, precise bore alignment, and reliable performance under extreme operating conditions. Kyoga Flanges serves industries such as oil and gas, petrochemicals, and energy, ensuring strict quality control, certified materials, and dependable delivery for demanding pressure systems.
API Type 6B Welding Neck Flanges are commonly manufactured from high-strength carbon steel or alloy steel grades suitable for high-pressure service. Typical compositions include controlled levels of carbon, manganese, silicon, chromium, molybdenum, and nickel to enhance strength and toughness. Mechanically, these flanges offer high tensile and yield strength, excellent impact resistance, and superior fatigue performance. The welding neck design provides smooth stress distribution, allowing the flange to withstand 5,000 PSI pressure and severe operating conditions safely.
Kyoga Flanges, a leading supplier in Bedok, Bedok, offers an extensive selection of API – Type 6B Welding Neck Flanges 5,000 PSI, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
| Specification Table Of : | API Type 6B Flange |
| ADNOC Approved Manufacturer Of Standards | ASME B16.36, DIN, AWWA C207, B16.47 Series A & B, BS1560-3.1, EN-1092, ASME B16.48, API605, BS4504, EN1092, UNI, ISO, MSS S44, IS 2062, ISO70051, API, API7S-43, ANSI/ASME B16.5, API7S-15 |
| Temperature Ratings | 150 LB To 2500 LB |
| Size Chart | (1/2″) To (48″) |
| Manufacturing Process |
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| Face Type Details | Raised Face, Large Tongue & Large Male-Female And Small Male-Female, Groove And Small Tongue Groove, RTJ, Flat Face, Lap-Joint Face. |
| Forging Materials | Stainless Steel, Alloy Steel, Carbon Steel, Duplex Steel & Super Duplex Steel, Cast Iron, Inconel, Mild Steel, Hastelloy, Copper Nickel, Wrought Iron. |
| Thickness | NPS ≤ 18 |
| Flanges High Temperature | Above 200° Celsius (400°F) For 150 Class Or Above 400° Celsius (750°F) |
| JIS Standards | 5K, 10K, 40K, 16K 20K 30K, 63K |
| Our Top Selling Products | Lap Joint, Socket-Weld, Blind, Threaded, Weld Neck, Slip-On |
| Buy Flanges For Pipe Connection | Power Plants Industry Food Processing And Manufacturing Waterworks Systems Nuclear Power Application Municipal Pipe Systems Fossil Fuel Power Plants Oil And Gas Industry |
| Type Of Making Format | Plate /Forged/ Threaded |
| Bore Diameter | NPS ≤ 10 |
| Normal Pipe Sizes | Daimeter Of Flanges | Daimeter Of RTJ | Hight Of Flanges | Flanges Bolting | Flanges Hub | RING | ||||||||
| Normal Pipe Sizes | Outside Daimeter | C | K | P | T | Q | LN | BC | N | H | X | HL | JL | R / RX |
| 2-1/16″ | 215 | 3 | 124 | 95.25 | 46.1 | 38.1 | 109.5 | 165.10 | 8 | 26 | 104.8 | 60.3 | 43.7 | 24 |
| 2-9/16″ | 245 | 3 | 137 | 107.95 | 49.3 | 41.3 | 112.7 | 190.50 | 8 | 29 | 123.8 | 73.0 | 54.9 | 27 |
| 3-1/8″ | 265 | 3 | 168 | 136.53 | 55.6 | 47.7 | 125.4 | 203.20 | 8 | 32 | 133.3 | 88.9 | 67.5 | 35 |
| 4-1/16″ | 310 | 3 | 194 | 161.93 | 62.0 | 54.0 | 131.8 | 241.30 | 8 | 35 | 161.9 | 114.3 | 88.1 | 39 |
| 5-1/8″ | 375 | 3 | 229 | 193.68 | 81.0 | 73.1 | 163.5 | 292.10 | 8 | 42 | 196.8 | 141.3 | 110.3 | 44 |
| 7-1/16″ | 395 | 6 | 248 | 211.15 | 92.1 | 82.6 | 181.0 | 317.50 | 12 | 39 | 228.6 | 168.3 | 132.6 | 46 |
| 9″ | 485 | 6 | 318 | 269.88 | 103.2 | 92.1 | 223.8 | 393.70 | 12 | 45 | 292.1 | 219.1 | 173.8 | 50 |
| 11″ | 585 | 6 | 371 | 323.85 | 119.1 | 108.0 | 265.1 | 482.60 | 12 | 51 | 368.3 | 273.1 | 216.7 | 54 |
API Type 6B Welding Neck Flanges rated at 5,000 PSI are widely used in upstream and midstream oil and gas operations, including wellhead equipment, high-pressure pipelines, manifolds, and process piping. They are suitable for refineries, petrochemical plants, and energy facilities where pressure containment and structural integrity are critical. The welding neck design ensures strong welded joints and minimizes turbulence and erosion. These flanges are ideal for high-pressure, high-temperature, and cyclic service applications requiring compliance with API standards and long-term reliability.
| NPS In Inch. | DN In MM | Flange Outside Daimeter A In MM | Flange Thickness D In MM | API 6a SORF Flange Weight In KG | API 6a WN Flange Weight In KG | API 6a BLRF Flange Weight In KG |
| 1/ 2 | 15 | 88.9 | 11.2 | 0.4 | 0.5 | 0.4 |
| 3/ 4 | 20 | 98.6 | 12.7 | 0.6 | 0.7 | 0.6 |
| 1 | 25 | 108 | 14.2 | 0.8 | 1 | 0.9 |
| 1 1/ 4 | 32 | 117.3 | 15.7 | 1 | 1.3 | 1.2 |
| 1 1/ 2 | 40 | 127 | 17.5 | 1.3 | 1.7 | 1.5 |
| 2 | 50 | 152.4 | 19.1 | 2.1 | 2.6 | 2.4 |
| 2 1/ 2 | 65 | 177.8 | 22.4 | 3.3 | 4.1 | 3.9 |
| 3 | 80 | 190.5 | 23.9 | 3.9 | 4.9 | 4.9 |
| 3 1/ 2 | 90 | 215.9 | 23.9 | 4.8 | 6.1 | 6.2 |
| 4 | 100 | 228.6 | 23.9 | 5.3 | 6.8 | 7.0 |
| 5 | 125 | 254 | 23.9 | 6.1 | 8.6 | 8.6 |
| 6 | 150 | 279.4 | 25.4 | 7.5 | 10.6 | 11.3 |
| 8 | 200 | 342.9 | 28.4 | 12.1 | 17.6 | 19.6 |
| 10 | 250 | 406.4 | 30.2 | 16.5 | 24 | 28.6 |
| 12 | 300 | 482.6 | 31.8 | 26.2 | 36.5 | 43.2 |
| 14 | 350 | 533.4 | 35.1 | 34.6 | 48.4 | 58.1 |
| 16 | 400 | 596.9 | 36.6 | 44.8 | 60.6 | 76.1 |
| 18 | 450 | 635 | 39.6 | 48.9 | 68.3 | 93.7 |
| 20 | 500 | 698.5 | 42.9 | 61.9 | 84.5 | 122.0 |
| 24 | 600 | 812.8 | 47.8 | 86.9 | 115 | 185.0 |
Yes, we offer custom sizes for API – Type 6B Welding Neck Flanges 5,000 PSI to meet specific project needs. Our team at Kyoga Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@www.kyogaflanges.com.
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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