Carbon Steel Flanges serve as essential fittings in industrial piping systems, providing a secure and efficient method to join pipes, valves, pumps, and related components. Engineered for high strength and durability, these flanges serve as a crucial interface for fluid handling systems across numerous industrial sectors. Their robust mechanical performance, coupled with exceptional pressure resistance, makes them ideal for use in both high- and low-temperature environments. Designed with precision and manufactured using advanced metallurgical processes, Carbon Steel Flanges are widely adopted in critical and non-critical applications where performance, reliability, and long-term integrity are paramount.

The increasing global demand for Carbon Steel Flanges stems from their versatility and cost-effectiveness. These components are fabricated using carbon steel grades such as ASTM A105, A350 LF2, and A105N, ensuring they meet rigorous international standards. Offering excellent weldability and ease of machining, Carbon Steel Flanges come in various types such as slip-on, blind, weld neck, socket weld, threaded, and lap joint. Their dimensions adhere to ANSI/ASME B16.5 and B16.47 Series A & B standards, ensuring seamless integration with existing piping systems. Sizing typically ranges from ½” to 48”, with pressure ratings covering Class 150 to 2500, offering scalability for various operational needs.

We cater to both domestic and international markets, with major supply regions including India, the United Arab Emirates (UAE), the Kingdom of Saudi Arabia (KSA), Kuwait, Qatar, the Sultanate of Oman, Iran, and Iraq. Our distribution capacity ensures prompt delivery and adherence to project timelines for industries seeking reliable and certified carbon steel flange solutions.

Technical Overview

Carbon Steel Flanges are manufactured with precise chemical compositions and mechanical properties that contribute to their wide-ranging utility. The typical chemical structure includes a carbon content around 0.035%, phosphorus at approximately 0.40%, and trace elements such as nickel at about 0.08%. These carefully balanced elements enhance tensile strength, improve fatigue resistance, and allow for excellent corrosion tolerance when coated or treated appropriately. The material's low carbon content ensures easy welding, minimizing the risk of carbide precipitation and intergranular corrosion during fabrication.

Dimensionally, these flanges conform to various international standards such as ANSI, BS, DIN, and EN, ensuring global compatibility. Steel flanges are available in various configurations, with raised face (RF), flat face (FF), and ring type joint (RTJ) being among the most widely used types. Advanced variants such as forged flanges, tongue and groove flanges, spectacle blinds, and reducing flanges are also available. Quality assurance protocols include ultrasonic testing, hydrostatic testing, and PMI (Positive Material Identification) to guarantee consistency, safety, and long-term performance. Certifications such as EN 10204 3.1/3.2 are provided based on project requirements.

Our extensive inventory includes specialized types like A350 LF2 Low-Temperature Flanges, ASTM A105 Long Weld Neck Flanges, Carbon Steel Plate Flanges, and threaded orifice flanges. These are particularly valuable in environments requiring high integrity under pressure and temperature variations. Whether it’s for maintenance, retrofit, or new pipeline infrastructure, our carbon steel flange solutions are engineered to meet precise technical specifications.

Applications & Industry Use

Carbon Steel Flanges are foundational to fluid transport and pressure management systems across a spectrum of industries. Within the oil and gas sector, Carbon Steel Flanges enable reliable connections across all stages—exploration, refining, and delivery systems. Their ability to handle high pressures and fluctuating temperatures makes them suitable for onshore and offshore rigs. Similarly, in petrochemical and chemical industries, they are employed in handling aggressive media, steam lines, and corrosive processing units.

In the power generation sector, these flanges are utilized in heat exchangers, turbine lines, and boiler connections where high thermal resistance is critical. Water treatment plants, paper and pulp industries, and HVAC systems also rely heavily on Carbon Steel Flanges for system connectivity and ease of maintenance. Moreover, the food processing industry increasingly incorporates these components due to their cleanability and strength when coated with food-grade finishes.

Infrastructure projects across India, the Middle East (including UAE, KSA, Kuwait, Qatar, Oman), and regions like Iran and Iraq continue to drive demand for Carbon Steel Flanges. Their integration into municipal pipelines, district cooling systems, and industrial water supply networks underscores their importance in regional development and energy diversification initiatives.

Carbon Slip On Flanges

Carbon Steel A105 SORF Flanges, ASME SA 105 Carbon Steel Slip-on Raised Face Flanges, A350 Carbon LF2 Slip On Flanges, Carbon SORF Flanges

Carbon Steel Weld Neck Flanges

ASTM A105 Carbon Steel F11 Weld Neck Flanges, ASME SA105 Carbon Steel WNRF Flanges, A350 Carbon Steel LF2 Weld Neck Flanges, Carbon Weld Neck Raised Face Flanges

Carbon Blind Flanges

Carbon Blind Flanges, ASTM A105 Carbon Steel Blind Flanges, ASME SA105 Carbon Steel BLRF Flanges, Carbon Steel Blind Raised Face Flanges Supplier

Carbon Steel Threaded Flanges

Carbon Screwed Flanges, ASTM A105 Carbon Steel Threaded Flanges, ASME SA 105 Carbon Steel Threaded Flanges, ASTM A350 Carbon LF2 Threaded Flanges

Carbon Steel Socket Weld Flanges

Carbon Socket Weld Flanges, ASTM A105 Carbon Steel Socket Weld Flanges, A350 LF2 Carbon Low Temp. Socket Weld Flanges

Carbon Steel Lap Joint Flanges

Carbon Steel Lap Joint Flanges, ASME SA105 Carbon Steel Lap Joint Flanges, ASTM A105 Chrome Moly Lap Joint Flanges, Carbon Lap Joint Flanges

Carbon Steel Ring Type Joint Flange

ASTM A105 Carbon Steel Ring Type Joint Flanges, ASME SA105 Carbon Steel Ring Type Joint Flanges, ANSI B16.9 Carbon Steel RTJ Flanges, A350 Low Temp. Carbon Steel Ring Type Joint Flange

Carbon Steel Orifice Flanges

ASTM A105 Carbon Steel Orifice Flanges, ASME SA 105 Carbon Orifice Flanges, B16.36 Carbon Steel Orifice Flanges, A350 Carbon Steel LF2 Orifice Flanges

Carbon Steel Long Weld Neck Flanges

ASTM A105 Carbon Steel Long Weld Neck Flanges, ASME SA 105 Carbon Steel Long Weld Neck Flanges, Carbon Steel A105 Long Weld Neck Flanges, Carbon Long Weld Neck Flanges

Carbon Steel Spectacle Blind Flanges

ASTM A105 Carbon Steel Spectacle Blind Flanges, ASME SA 105 Carbon Steel Spectacle Blind Flanges, ANSI / ASME B16.9 Carbon Steel Spectacle Blind Flanges, A350 Carbon LF2 Spectacle Blind Flanges

Carbon Steel Forged Flanges

ASTM A105 Carbon Steel Forged Flanges, ASME SA105 Carbon Steel Forged Flanges, B16.9 Carbon Steel Forged Flanges, Carbon Steel Forged Flanges

Carbon Steel Plate Flanges

ASTM A105 Carbon Steel Plate Flanges, ASME SA105 Carbon Steel Plate Flanges, ANSI B16.9 Carbon Steel Plate Flanges, A350 Carbon Steel LF2 Plate Flanges

Carbon Steel Flanges Specification :

ASTM A105 / ASME SA105

Dimension Standard :

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" (15 NB) to 48" (1200NB)

Class / Pressure :

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Flange Face Type :

Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

DIN Flanges :

DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673.

JIS Flanges :

JIS B2220 5K, JIS B2220 10K, JIS B2220 16K, JIS B2220 20K

BS Flanges :

BS4504 PN 6, BS 4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS 4504 PN 64, BS 4504 PN 100, BS 4504 PN 160, BS 4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H.