In high-pressure systems, carbon steel flanges are crucial piping parts that join pipes, valves, pumps, and other equipment. These flanges are widely used in the construction, chemical, water treatment, oil and gas, and power generation industries because of their strength, affordability, and durability. Carbon steel flanges, which are frequently produced in accordance with ASTM A105, A350 LF2, and A694 standards, are available in weld neck, slip-on, blind, threaded, and socket weld varieties. They guarantee safe, leak-proof connections in seamless and welded piping systems and perform exceptionally well under high temperatures and pressures.
Carbon-rich alloys, which usually contain trace amounts of silicon, manganese, phosphorus, sulphur, and carbon (up to 0.35%), are used to make carbon steel flanges. Grades such as A105 offer elongation of at least 22%, yield strength of at least 250 MPa, and tensile strength of 485–655 MPa. These flanges have good impact resistance and are very machinable and weldable. High-strength versions like A694 are utilised for high-pressure gearbox applications, particularly in oil and gas systems, while low-temperature grades like A350 LF2 are employed in cryogenic services.
| 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.
Luke Steel is one of the most prominent manufacturers and suppliers of superior quality Carbon Steel Flanges in USA, USA. 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
Industries that need robust and dependable pipe joining components frequently use carbon steel flanges. Boiler plants, chemical processing, marine systems, oil and gas pipelines, and firefighting infrastructure are a few examples of applications. Blind flanges aid in the termination of piping systems, while weld neck and slip-on flanges are utilised for the transportation of high-pressure fluids. For both above-ground and buried pipeline networks, their high tensile strength and resistance to corrosive fluids and heat stress make them perfect. For increased resistance in challenging conditions, carbon steel flanges can be coated, painted, or galvanised, making them a flexible option for a variety of industries.
Luke 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 USA, USA.
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