Ronwen Flanges stands out as a top-notch manufacturer and supplier of ANSI B16.47 flanges, proudly based in Cape Town, South Africa. Renowned for their precision, reliability, and commitment to international standards, this company delivers high-quality large-diameter flanges that are perfect for critical industrial applications. Their ANSI B16.47 flanges are crafted according to the specifications set by the American National Standards Institute for sizes over 24 inches, ensuring they are strong, accurate, and durable. Ronwen Flanges offers these flanges in a variety of materials, including carbon steel, stainless steel, and alloy steel, providing reliable solutions for industries such as oil and gas, petrochemical, power generation, and water treatment, both in South Africa and around the globe.
These ANSI B16.47 flanges come in two series—Series A (previously known as MSS SP-44) and Series B (formerly API 605)—each tailored to meet different pressure and dimensional needs. They are available in pressure classes ranging from 75 to 900 and are typically made as weld neck or blind types. With excellent mechanical strength, corrosion resistance, and performance capabilities under high pressure and temperature, these flanges are built to last. Their robust design guarantees leak-free sealing and a long service life, making them ideal for large-scale, high-stress piping systems.
Ronwen Flanges, a premier supplier in Cape Town, South Africa, specializes in high-quality ANSI B16.47 Flanges, valued for their exceptional durability, corrosion resistance, precise engineering, and suitability across diverse industrial applications.
| pecifications | ANSI 16.47 Flanges |
|---|---|
| ANSI 16.47 Flange size range | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
| Main Types | Forged / Threaded / Screwed / Plate |
| Flange supporting material | Gasket, Ring Joint, Flange Bolts |
| Production technique | Forged, Heat treated and machined |
| Special design | As per your drawing AS, ANSI, BS, DIN and JIS JIS Threaded Flange, Socketweld Flange, Slip-On Flange, Blind Flange, Weld Neck Flange |
| Specialized manufacturer of | DIN 2566 en 1092 1 Pn16 Flange DIN 2566 pn16 Rtj Flange ANSI 16.47 Sorf Flange ANSI 16.47 Table Flanges DIN 2566 pn10 ANSI 16.47 Large Diameter Flange ANSI 16.47 Threaded Flanges ANSI 16.47 Blind Flanges ANSI 16.47 Plate Flanges ANSI 16.47 Weld Neck Flanges ANSI 16.47 Loose Flanges ANSI 16.47 Orifice Flanges ANSI 16.47 Slip-On Flanges ANSI 16.47 Lap Joint Flanges ANSI 16.47 Socketweld Flanges ANSI 16.47 AS 4087 Water Flanges |
| Test | Hydrostatic testing machine, Direct-reading Spectrograph,UI trasonic flaw detector, X-ray detector, Magnetic particle detector |
| Equipment | Bending machine, Press machine, electric bevelling machine, Pushing Machine, Sand-blasting machine etc |
| Origin | West Europe /Indian / USA / Japan / Korean |
| Key markets and industries for ANSI B16.47 Flange | Nuclear power (mostly seamless). Heavy oil refineries. Bitumen upgraders. Petrochemicals and acids. |
| Export to | Indonesia, Ireland, Ukraine, Singapore,Saudi Arabia,Canada, Peru, Dubai, Brazil, Iran, Korea, USA, India, Egypt, Thailand, Spain, Oman etc |
| ANSI B16.47 Flanges Application | To Connect Pipe & Tubes in Power, Petroleum,Construction, Chemical, Gas, Shipbuilding,Metallurgy, etc |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
| Nominal Size | Outside Diameter (OD) | Min. Thickness [Note1] – WNF (tf) | Min. Thickness [Note1] – Blind (tf) | Length Through Hub (Y) | Hub Dia. Base [Note2] (X) | Hub Dia. Top (A) | Raised Face Dia. (R) | Drilling – Bolt Circle Dia. | Drilling- No. of Bolt Holes | Drilling – Dia. of Bolt Hole | Dia. of Bolt | Min. Fillet Radius (r1) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 26 | 38.25 | 3.50 | 3.88 | 7.62 | 28.62 | 26.00 | 29.50 | 34.50 | 28 | 178 | 134 | 0.44 |
| 28 | 40.75 | 3.75 | 4.12 | 8.12 | 30.81 | 28.00 | 31.50 | 37.00 | 28 | 2 | 178 | 0.50 |
| 30 | 43.00 | 4.00 | 4.38 | 8.62 | 32.94 | 30.00 | 33.75 | 39.25 | 28 | 218 | 2 | 0.50 |
| 32 | 45.25 | 4.25 | 4.56 | 9.12 | 35.00 | 32.00 | 36.00 | 41.50 | 28 | 218 | 2 | 0.50 |
| 34 | 47.50 | 4.38 | 4.81 | 9.50 | 37.19 | 34.00 | 38.00 | 43.50 | 28 | 218 | 2 | 0.56 |
| 36 | 50.00 | 4.50 | 5.06 | 9.88 | 39.38 | 36.00 | 40.25 | 46.00 | 32 | 218 | 2 | 0.56 |
| 38 | 47.50 | 4.88 | 4.88 | 8.12 | 39.50 | 38.00 | 40.75 | 44.00 | 32 | 178 | 134 | 0.56 |
| 40 | 50.00 | 5.12 | 5.12 | 8.50 | 41.50 | 40.00 | 43.00 | 46.25 | 32 | 2 | 178 | 0.56 |
| 42 | 52.00 | 5.25 | 5.25 | 8.81 | 43.62 | 42.00 | 45.00 | 48.25 | 32 | 2 | 178 | 0.56 |
| 44 | 54.50 | 5.50 | 5.50 | 9.18 | 45.62 | 44.00 | 47.25 | 50.50 | 32 | 218 | 2 | 0.56 |
| 46 | 56.75 | 5.75 | 5.75 | 9.62 | 47.75 | 46.00 | 49.50 | 52.75 | 36 | 218 | 2 | 0.56 |
| 48 | 59.50 | 6.00 | 6.00 | 10.12 | 49.88 | 48.00 | 51.50 | 55.25 | 28 | 238 | 214 | 0.56 |
| 50 | 61.75 | 6.19 | 6.25 | 10.56 | 52.00 | 50.00 | 53.62 | 57.50 | 32 | 238 | 214 | 0.56 |
| 52 | 63.75 | 6.38 | 6.44 | 10.88 | 54.00 | 52.00 | 55.62 | 59.50 | 32 | 238 | 214 | 0.56 |
| 54 | 67.00 | 6.69 | 6.75 | 11.38 | 56.12 | 54.00 | 57.88 | 62.25 | 28 | 258 | 212 | 0.56 |
| 56 | 69.00 | 6.88 | 6.94 | 11.75 | 58.25 | 56.00 | 60.12 | 64.25 | 32 | 258 | 212 | 0.56 |
| 58 | 71.00 | 7.00 | 7.12 | 12.06 | 60.25 | 58.00 | 62.12 | 66.25 | 32 | 258 | 212 | 0.56 |
| 60 | 74.25 | 7.31 | 7.44 | 12.56 | 62.38 | 60.00 | 64.38 | 69.00 | 32 | 278 | 234 | 0.56 |
You’ll find ANSI B16.47 flanges widely used in heavy industrial sectors that require large pipe diameters. They play a crucial role in high-capacity oil and gas pipelines, petrochemical refineries, power plants, and water distribution systems. Their ability to handle extreme pressure and temperature fluctuations makes them perfect for demanding process and transmission applications. Thanks to their precision engineering and top-quality materials, ANSI B16.47 flanges from Ronwen Flanges ensure safe, efficient, and durable connections in critical piping networks throughout South Africa and in international industrial operations.
Yes, we offer custom sizes for ANSI B16.47 Flanges to meet specific project needs. Our team at Ronwen Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@ronwenflanges.co.za.
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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