Kabby Flanges, a trusted manufacturer and supplier located in Abuja, Nigeria, specializes in top-notch Stainless Steel 347H Flanges that are built to perform exceptionally well in high-temperature and corrosive industrial settings. These flanges are enhanced with niobium, which provides remarkable resistance to intergranular corrosion and carbide precipitation during welding or when exposed to heat. Crafted with precision and in line with international quality standards, Kabby Flanges delivers durable, high-strength flanges that are perfect for demanding applications. Stainless Steel 347H Flanges are commonly found in the petrochemical, power generation, and refinery sectors, where they offer outstanding reliability, heat resistance, and a long service life even in extreme conditions.
These flanges are made up of chromium (17–19%), nickel (9–13%), and niobium (8–10×C%), giving them exceptional resistance to oxidation, scaling, and intergranular corrosion. They boast a tensile strength of about 515 MPa and a yield strength of roughly 205 MPa, ensuring they perform robustly under pressure. The “H” grade signifies a higher carbon content, which boosts creep strength and toughness at elevated temperatures. With excellent weldability, ductility, and durability, these flanges are perfect for continuous use in high-temperature environments and rigorous industrial processes.
| Specification | ASTM A182 / ASME SA182 |
|---|---|
| Size Chart | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
| Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
| Pressure Rating ANSI | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Coating | Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production Technique | Forged, Heat treated and machined |
| Connect Type/ Flange Face Type | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove |
| Special design | As per your drawing AS, ANSI, BS, DIN and JIS 15 NB (1/2″) to 200 NB (8″) Equal and Reducing Configurations |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
| Equipment | Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc |
| Manufacturer of | ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc. BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange B.S: BS4504 , BS3293, BS1560, BS10 AS 2129: Table D; Table E; Table H ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48 ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48 American standard (ANSI) German (DIN) British standard (BS) DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638 ASTM A182 F347H Stainless Steel Flanges The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276 |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 8xC – 1.10 | 9.00 – 13.00 | 63.72 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Kabby Flanges, a leading supplier in Abuja, Nigeria, offers an extensive selection of Stainless Steel 347H Flanges, 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.
Stainless Steel 347H Flanges are extensively utilized in industries that demand superior high-temperature strength and corrosion resistance. They are particularly suited for applications in chemical processing, refinery systems, heat exchangers, boilers, power plants, and exhaust manifolds. These flanges create secure, leak-proof connections for pipelines that transport hot gases, steam, or corrosive fluids. Thanks to their niobium stabilization, they effectively prevent carbide precipitation, making them especially reliable for continuous heat exposure. With their impressive mechanical and thermal properties, Stainless Steel 347H Flanges guarantee dependable performance and a long service life.
| Pipe Normal Diam. | O.D. Flange | Thk. Of Flange Min | Diam. of Hub | Diameter of Raised Face | Length Hub.Y | Thread Length | Diam. of Bolt Circle | Diam. of Bolt Holes | Number of Bolts | Diam. of Bolts (inch) | KG | LB | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| inch | dn | O | C | X | G | Y | T | BC | BH | BN | BD | ||
| 1/2″ | 15 | 89.00 | 11.20 | 30.20 | 35.10 | 15.70 | 15.70 | 60.50 | 15.80 | 4 | 1/2″ | 0.4 | 0.9 |
| 3/4″ | 20 | 98.50 | 12.70 | 38.10 | 42.90 | 15.70 | 15.70 | 69.90 | 15.80 | 4 | 1/2″ | 0.7 | 1.5 |
| 1″ | 25 | 108.00 | 14.20 | 49.30 | 50.80 | 17.50 | 17.50 | 79.30 | 15.80 | 4 | 1/2″ | 0.8 | 1.8 |
| 1-1/4″ | 32 | 117.50 | 15.70 | 58.70 | 63.50 | 20.60 | 20.60 | 88.90 | 15.80 | 4 | 1/2″ | 1.2 | 2.6 |
| 1-1/2″ | 40 | 127.00 | 17.50 | 65.00 | 73.20 | 22.40 | 22.40 | 98.60 | 15.80 | 4 | 1/2″ | 1.5 | 3.3 |
| 2″ | 50 | 152.50 | 19.10 | 77.70 | 91.90 | 25.40 | 25.40 | 120.70 | 19.10 | 4 | 5/8″ | 2.3 | 5.1 |
| 2-1/2″ | 65 | 178.00 | 22.40 | 90.40 | 104.60 | 28.40 | 28.40 | 139.70 | 19.10 | 4 | 5/8″ | 3.7 | 8.1 |
| 3″ | 80 | 190.50 | 23.90 | 108.00 | 127.00 | 30.20 | 30.20 | 152.40 | 19.10 | 4 | 5/8″ | 4.1 | 9 |
| 3-1/2″ | 90 | 216.00 | 23.90 | 122.20 | 139.70 | 31.80 | 31.80 | 177.80 | 19.10 | 8 | 5/8″ | 5.1 | 11.2 |
| 4″ | 100 | 228.50 | 23.90 | 134.90 | 157.20 | 33.30 | 33.30 | 190.50 | 19.10 | 8 | 5/8″ | 5.9 | 13 |
| 5″ | 125 | 254.00 | 23.90 | 163.60 | 185.70 | 36.60 | 36.60 | 215.90 | 22.40 | 8 | 3/4″ | 7 | 15.4 |
| 6″ | 150 | 279.50 | 25.40 | 192.00 | 215.90 | 39.60 | 39.60 | 241.30 | 22.40 | 8 | 3/4″ | 8.4 | 18.5 |
| 8″ | 200 | 343.00 | 28.40 | 246.10 | 269.70 | 44.50 | 44.50 | 298.50 | 22.40 | 8 | 3/4″ | 13 | 28.6 |
| 10″ | 250 | 406.50 | 30.20 | 304.80 | 323.90 | 49.30 | 49.30 | 362.00 | 25.40 | 12 | 7/8″ | 18 | 39.5 |
| 12″ | 300 | 482.50 | 31.80 | 365.30 | 381.00 | 55.60 | 55.60 | 431.80 | 25.40 | 12 | 7/8″ | 29 | 64 |
| 14″ | 350 | 533.50 | 35.10 | 400.10 | 412.80 | 57.20 | 57.20 | 476.30 | 28.50 | 12 | 1″ | 39 | 86 |
| 16″ | 400 | 597.00 | 36.60 | 457.20 | 469.90 | 63.50 | 63.50 | 539.80 | 28.50 | 16 | 1″ | 47 | 103 |
| 18″ | 450 | 635.00 | 39.60 | 505.00 | 533.40 | 68.30 | 68.30 | 577.90 | 31.80 | 16 | 1 1/8″ | 57 | 126 |
| 20″ | 500 | 698.50 | 42.90 | 558.80 | 584.20 | 73.20 | 73.20 | 635.00 | 31.80 | 20 | 1 1/8″ | 76 | 167 |
| 24″ | 600 | 813.00 | 47.80 | 663.40 | 692.20 | 82.60 | 82.60 | 749.30 | 35.10 | 20 | 1 1/4″ | ||
Yes, we offer custom sizes for Stainless Steel 347H Flanges to meet specific project needs. Our team at Kabby Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@kabbyflanges.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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