Liam Steel, a top-notch manufacturer and supplier located in Manila, Philippines, specializes in high-quality Carbon Steel Flanges. These flanges are crafted for strength, reliability, and leak-proof connections in industrial piping systems. Built to meet international standards, they boast precise dimensions, a superior surface finish, and outstanding mechanical properties. With a variety of types available—including weld neck, slip-on, blind, socket weld, threaded, and lap joint—Liam Steel’s flanges are perfect for a wide range of industrial applications. Commonly found in the oil & gas, petrochemical, power generation, water treatment, and construction sectors, these carbon steel flanges ensure safe operation, durability, and a long service life even under tough pressure and temperature conditions.
Carbon Steel Flanges are primarily made up of carbon (0.15–0.30%), manganese (0.60–1.20%), silicon (0.10–0.35%), phosphorus (≤0.05%), and sulfur (≤0.05%). This blend gives them impressive tensile strength, ductility, and toughness. Typically, these flanges offer a tensile strength ranging from 440–570 MPa and a yield strength of 250–350 MPa. The forging and heat treatment processes enhance their grain structure, impact resistance, and dimensional stability. Thanks to their excellent weldability and mechanical integrity, carbon steel flanges are well-suited for high-pressure and medium-pressure applications, ensuring reliability, durability, and long-term performance in critical industrial piping systems.
| 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.
Liam Steel is one of the most prominent manufacturers and suppliers of superior quality Carbon Steel Flanges in Manila, Philippines. 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.
Carbon Steel Flanges are essential for connecting pipes, valves, pumps, and other components in both industrial and commercial piping systems. They’re particularly well-suited for oil & gas pipelines, petrochemical plants, refineries, power generation facilities, water treatment systems, and construction projects. These flanges provide secure, leak-proof connections while making inspection, maintenance, and assembly a breeze. With various designs available—like weld neck, slip-on, blind, and threaded flanges—they meet the needs of different pressure requirements, ensuring that every connection is both safe and efficient.





Liam 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 Manila, Philippines.
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