Based in the heart of Kinshasa, Yoane Steel has built a strong reputation as a trusted local source for industrial components, with a particular expertise in carbon steel flanges. We understand the critical demands of projects across the Congo, and our commitment is to provide durable, reliable connections that form the backbone of the nation’s growing infrastructure. Our focus is on delivering not just products, but dependable solutions that keep pipelines and systems secure and operational under the region’s challenging conditions.
The strength of these flanges comes from their carefully controlled composition, primarily iron and carbon, which gives them a remarkable balance of durability and versatility. This specific blend results in excellent tensile strength, allowing them to withstand high internal pressures without failing. They also offer good impact resistance, meaning they can handle sudden stress or shock, making them a go-to choice for creating long-lasting, secure connections in demanding piping networks.
| Specifications | ASTM A105 / ASME SA105, A105N |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Size | 1/2″ to 48″ |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Flanges Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Elements | Composition, % |
| Carbon [C] | ≤0.35 |
| Manganese [Mn] | 0.60-1.05 |
| Phosphorus [P] | ≤0.35 |
| Sulfur [S] | ≤0.40 |
| Silicon [Si] | 0.10-0.35 |
| Copper [Cu] | ≤0.40 |
| Nickel [Ni] | ≤0.40 |
| Chromium [Cr] | ≤0.30 |
| Molybdenum [Mo] | ≤0.12 |
| Vanadium [V] | ≤0.08 |
| Tensile Strength min. | Yield Strength min. | Elongation min. | Reduction of Area, min. | Hardness | ||
|---|---|---|---|---|---|---|
| MPa | ksi | MPa | ksi | % | % | HBW |
| 485 | 70 | 250 | 36 | 22 | 30 | 137-187 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Yoane Steel is one of the most prominent manufacturers and suppliers of superior quality Carbon Steel Flanges in Kinshasa, Congo. As experts in steel solutions, we supply a complete spectrum of products like Carbon Steel, Alloy Steel, Mild Steel, and Galvanized Steel. Our product range comprises Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets, and Plates. Known for our reliable delivery and first-rate customer service, we are committed to supplying high-quality steel materials that guarantee durability and excellent performance in numerous industrial applications.Â
In practice, these robust flanges are essential for constructing and maintaining the vital arteries of industry and development. You’ll find them creating secure junctions in water distribution systems that serve our communities, in the pipelines for oil and gas, and within processing plants for minerals and chemicals. From supporting new construction projects to ensuring the smooth operation of existing facilities, Yoane Steel’s flanges provide the reliable connections that power progress and daily life throughout the Democratic Republic of Congo.





Yoane Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Kinshasa, Congo.
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