Carbon Steel Flange
Carbon steel flanges offer high strength, good weldability, and wear resistance, making them reliable in high-pressure, high-temperature, and harsh environments.
Carbon Steel Flange We Can Supply
SSM provides a wide range of carbon steel flanges, widely used in industries such as oil, natural gas, chemicals, power, and water treatment. Our carbon steel flanges comply with various international standards, such as ASTM A105, A350, A694, and are designed to withstand high pressure, high temperature, and other harsh operating environments. We also offer customized flanges, including weld neck flanges, slip-on flanges, blind flanges, and more, ensuring safe and reliable connections in various piping systems.
A carbon steel flange is a pipe fitting made from carbon steel, typically used to connect two sections of pipe or a pipe to equipment, valves, etc. These flanges are usually bolted together with other flanges to form a sealed connection, capable of withstanding high pressure, high temperature, and other operational conditions in a piping system.
Due to their relatively high cost-effectiveness—carbon steel flanges are generally 30% to 100% less expensive than stainless steel flanges—and their good performance, they are widely used across multiple industries, including oil and gas, chemical, power, water treatment, marine, and metallurgy.
The most common materials for carbon steel flanges are as follows, and each material has different characteristics based on its chemical composition, mechanical properties, and applicable environments:
ASTM A105 flanges are made from carbon steel with a carbon content not exceeding 0.35%. These flanges conform to the ASTM A105 standard and are commonly used to connect pressure vessels and piping systems.
They have good strength, toughness, and weldability, making them suitable for environments with temperatures between -29°C and 425°C in industries such as oil, chemicals, and power.
ASTM A350 flanges comply with the ASTM A350 standard and are typically made from low-temperature carbon steel, such as LF2 (low-temperature carbon steel) and LF3 (low-temperature chromium-molybdenum steel).
These flanges are specifically designed for low-temperature applications and are ideal for environments ranging from -50°F (-46°C) to -150°F (-101°C).
They are commonly used in LNG transportation, chemical processing, and low-temperature pipelines, offering excellent low-temperature impact toughness and resistance to brittle fracture.
ASTM A694 flanges conform to the ASTM A694 standard and are typically made from carbon steel or alloy steel. Common grades include F52, F60, F65, F70, etc.
These flanges are primarily used in high-pressure, high-strength piping systems. The ASTM A694 standard is designed for high-strength carbon and alloy steel flanges, especially for applications with high-pressure ratings.
They are widely used in the oil and gas transmission, chemical industry, and high-temperature or harsh environments.
Manufacturing Standards for Carbon Steel Flanges
Common manufacturing standards include:
ASME B16.5 Flange
The ASME B16.5 standard applies to flanges with diameters ranging from 1/2 inch to 24 inches and pressure ratings of 150, 300, 600, 900, 1500, and 2500. It is typically used for pressure piping systems and covers the design and manufacturing requirements for various types of piping flanges.
ASME B16.47 Flange
The ASME B16.47 standard applies to flanges with diameters of 24 inches and larger, with sizes up to 60 inches or even larger. Since these flanges deal with higher pressures and larger sizes, the thickness and strength requirements are higher than those of ASME B16.5. These flanges are widely used in high-pressure piping systems, particularly in the oil, gas, and chemical industries.
EN 1092-1 Flange
The EN 1092-1 standard applies to flanges with diameters ranging from DN 10 to DN 4000 and covers multiple pressure ratings such as PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, etc. These flanges are primarily used in the European market for piping system connections.
In addition to ASME B16.5, ASME B16.47, and EN 1092-1, flange manufacturing standards vary depending on the region, application field, pipeline pressure, and temperature. Other common standards include AWWA C207, API 6A, ISO 7005, BS 4504, JIS B2220, and DIN 2573/2576, which are used in industries such as oil and gas, chemical, power, water treatment, and more, ensuring flange reliability and safety in extreme environments like high pressure, high temperature, and corrosive conditions.
Common Types of Carbon Steel Flanges
We offer the following types of carbon steel flanges: Weld Neck Flange, Slip-on Flange, Socket Weld Flange, Blind Flange, Lap Joint Flange, Threaded Flange, etc.
We can also customize flanges according to your specific requirements.
One-Stop Carbon Steel Flange Provider for All Your Needs
SSM has significant product advantages in manufacturing carbon steel flange, Whether it’s quality or price, we will meet your needs.
More Information About Carbon Steel Flanges
Difference Between Stainless Steel Flanges and Carbon Steel Flanges
Stainless Steel Flanges offer superior corrosion resistance, durability, and strength, making them ideal for harsh, high-temperature, and high-corrosion environments but come at a higher cost.
Carbon Steel Flanges are more cost-effective, strong, and suitable for high-pressure applications, but they are less resistant to corrosion and require more maintenance.
Carbon steel to stainless steel flange connections
Connecting carbon steel flanges to stainless steel flanges requires careful consideration of material compatibility, potential galvanic corrosion, and the use of proper isolation techniques (like insulating gaskets). While both materials are commonly used in industrial piping systems, ensuring proper connection methods will prevent long-term maintenance issues such as corrosion, leaks, and system failure.
Key factors include selecting the right gasket material, using compatible bolts, and addressing thermal expansion differences.
Why Can SSM Provide You with High-Quality Carbon Steel Flange?
SSM can provide high-quality carbon steel flanges due to its extensive experience, adherence to international standards like ASTM A105, A350, A694, and ASME B16.5, and use of premium raw materials. With advanced manufacturing processes, rigorous quality control, and customized solutions, SSM ensures that each flange meets the required mechanical properties and dimensional accuracy.
Additionally, we offer competitive pricing and timely delivery, making us a reliable partner for all your carbon steel flange needs.
More Resources:
Carbon Steel Pipe
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