Carbon Steel Flanges

Our company provides Carbon Steel Flanges.

Carbon steel pipe flanges usually adopt mild steel or low carbon steel, as it includes a small percentage of carbon, strong and tough but not readily tempered.

Carbon Steel Flange and end flange connectors are basically made of carbon steel. Common standards include ASTM A694, ASTM A105N (SA105N), MSS SP-44, DIN 2533. Accompanying pressure ratings are from class 150 to 2500.

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Carbon Steel Flanges

Carbon Steel Flanges are one such type of flange that is usually made up of carbon steel. This material provides properties such as resistance to corrosion, excellent durability, and finishing in goods. They are available in various types. For instance, Carbon Steel Blind Flanges are used to terminate the pipe. High-grade raw material is used to manufacture these flanges. They have a carbon content in the range of 0.25% to 0.60%. Due to the high volume of carbon and manganese, the fabrication of the product is excellent and ductility is also good.

There is another type of flange that is known as killed Carbon Steel Forged Flanges. They are destroyed in the melting process. Due to the addition of manganese, silicon, and aluminum during the production of steel, deoxidation takes place. Carbon Steel Plate Flanges are welded onto the pipe which helps in bolting and connecting one pipe to the other. It displays good ductility, and toughness. These Carbon Steel Pipe Flanges also work well in low temperatures. They are used in fuel and water pipelines. The cost of these flanges ranges between Rs 398 to Rs 689.

To strengthen and harden the steel and cast iron alloy Carbon Steel Slip On Flanges are passed through a process known as quenching. They are used in various construction, engineering, and petrochemical industries. The outer diameter of the slip-on flange is also welded. Carbon Steel Weld Neck Flanges have a neck extension at the end. This type of flange is directly buttwelded to the pipe to provide a natural connection. Carbon Steel Flanges manufacturers in India recommend the use of these flanges when the conditions are critical and severe.

Carbon steel flanges are produced from pressure vessel plates or forged steel rings. Mill plate produced to the A516 Gr60 or A516 Gr70 standards is virtually free of voids, non-metallic inclusions, and other defects. Steel Flanges are widely accepted in pressure vessel and pipeline applications. Carbon steel Shell flange, Carbon steel end cover flange Customized flange.

Here is the detailed feature and performance table for carbon steel flanges in English, including data ranges for specifications, common standards, types, flange faces and connection methods, and the manufacturing process:

StrengthCarbon steel flanges are known for their high strength, capable of withstanding significant pressure and mechanical stress.
Cost-EffectivenessThese flanges are cost-effective, providing excellent mechanical properties at a reasonable price point.
Wide Range of ApplicationsCarbon steel flanges find use in diverse applications, including oil and gas, petrochemicals, construction, and more.
Common Material GradesCarbon steel flanges have various material grades, but two common grades are:
– ASTM A105Widely used carbon steel grade suitable for general-purpose applications.
– ASTM A350 LF2Low-temperature carbon steel grade ideal for cryogenic and sub-zero environments.
Specification SizesCarbon steel flange specifications and sizes vary depending on standards (such as ANSI B16.5, ASME B16.47, etc.) and specific application requirements. Here are typical data ranges:
– Flange DiameterFrom 1/2″ (15mm) to 48″ (1200mm)
– Flange ThicknessFrom 1/4″ (6mm) to 6″ (150mm)
– Number and Spacing of Bolt HolesVaries with specifications and pressure ratings, typically 4, 8, 12, or more, with different spacing.
Common StandardsCarbon steel flanges typically conform to one of the following standards:
– ANSI B16.5Flange standard established by the American National Standards Institute, widely used in various engineering projects.
– ASME B16.47Flange standard developed by the American Society of Mechanical Engineers for large and high-pressure flanges.
TypesCarbon steel flanges come in various types, including:
– Slip-On FlangeCommonly used in pipeline systems, allowing the flange to rotate, suitable for various angles of welding.
– Blind FlangeUsed to seal one end of a pipe, typically used during maintenance or inspection periods.
Flange Faces and Connection MethodsFlanges typically have two types of flange faces and connection methods:
– Flat FaceLow-temperature carbon steel grade is ideal for cryogenic and sub-zero environments.
– Raised FaceThe Flange face is slightly raised, often used in high-pressure or high-temperature applications, and sealed with gaskets.
Manufacturing ProcessThe general manufacturing process for carbon steel flanges includes:
– CuttingCutting the required flange blanks from raw materials.
– ForgingForging the blanks into the desired shape, increasing density and mechanical properties.
– MachiningProcessing the forged flanges, including hole drilling, thread machining, and surface finishing.
– InspectionConducting various quality inspections to ensure compliance with standards and specifications.
– Packaging and DeliveryPackaging the final flange products and delivering them to customers or project sites.

This comprehensive table provides detailed information about the features, performance, common material grades, specification sizes, standards, types, flange faces and connection methods, and the manufacturing process of carbon steel flanges. It will help you gain a comprehensive understanding of carbon steel flanges’ characteristics, enabling you to make informed decisions regarding material and specification choices to meet specific engineering requirements. Please note that selecting the right specifications, sizes, and flange types is critical to ensuring the effectiveness and reliability of flanges in a system.


Carbon steel can get rust, but you can prevent it using the following solutions:

1. Oil varnishing: It helps to lubricate the carbon steel. Oil forms a protective barrier against rust and allows them to move with friction.

2. Anti-rust painting: Painting a carbon steel flange helps to cover metal components in a protective layer. It helps to prevent moisture from reaching the metal and therefore prevents rust and general corrosion.

3. Electric zinc-coated (Yellow or white zinc): Galvanising or electric zinc-coating is one method to prevent rust. It is easy to stop the reach of water and oxygen underneath the metal by coating it in a thin layer of zinc.

Carbon Steel Flange and end flange connectors are basically made of carbon steel. Common standards include ASTM A694, ASTM A105N (SA105N), MSS SP-44, DIN 2533. Accompanying pressure ratings are from class 150 to 2500. Carbon steel is steel with a carbon content of up to 2.1% by weight.

The manufacturing of Carbon Steel Flange is from various carbon steel grades. Common standards include DIN (2533 and other subspecies), MSS SP-44, ASTM A105N, and ASTM A694. They accompany pressure ratings from class 150 to 2500 in imperial and PN10 to PN40 for metric. The specified minimum of Cu shall not exceed 0.04%.

ASTM A182 is the standard for alloy and stainless steel piping flanges and fittings. Alloy steel flanges are produced with more chrome and molybdenum, so they are sometimes preferred for corrosion resistance and can better withstand high temperatures and high pressure.

The different grades of carbon steel flanges are ASTM A105, ASTM A182, ASTM A694, ASTM A516, and ASTM A350. 1% to 2% is the weight of carbon in the carbon steel flanges. The increase of carbon content in the element makes steel sturdier and stiffer. It makes things less ductile.

ASTM A105 Flange is a specification of flanges. The specification can include different grades of stainless steel material made flanges. The flanges are of forged carbon steel and are meant for high-temperature services. YANHAO is a leading manufacturer and supplier of the ASTM A105 Flange types.

Carbon steel has several advantages over traditional steel, one of which is its higher strength. The use of carbon makes iron — or steel — stronger by moving about its crystal lattice. While carbon steel can still stress and crack under pressure, it is less likely than other forms of steel to do so.