A non-standard flange, often referred to as a custom flange, is a type of flange that does not adhere to the internationally recognized standards for flanges. Flanges are typically used to connect pipes, valves, and other equipment in various industries, and they come in standardized sizes and shapes to ensure compatibility and interchangeability.

Custom Flanges

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What are Custom Flanges?

Custom flanges or non-standard flanges are designed for special applications where standard flanges may not be suitable or where specific design requirements must be met. These custom flanges are often manufactured to order and may require engineering and design expertise to ensure they meet the required performance and safety standards for the intended use. These custom flanges can have unique dimensions, hole patterns, facing types, and materials, among other characteristics, to the specific needs of a project or application.

Benefits of Custom Flanges

  • Versatility: Custom flanges can be designed to meet the specific requirements of any application, regardless of the pressure, temperature, size, or other factors. That makes them ideal for various applications, including those with unique or challenging requirements.
  • Durability: Custom flanges are typically made from high-quality materials, such as stainless steel and alloy steel, which makes them very durable and resistant to corrosion and erosion. That is especially important for applications in harsh environments or where the flanges will be exposed to corrosive fluids or gases.
  • Safety: Custom flanges can be designed to withstand high pressures and temperatures, which makes them very safe and reliable. That is critical for applications where a flange failure could have serious consequences, such as a loss of containment or a release of hazardous materials.
  • Performance: Custom flanges can be designed to optimize the performance of piping systems and equipment. For example, custom flanges can be designed to reduce flow resistance, improve vibration damping, or minimize noise levels.
  • Cost-effectiveness: Custom flanges can be more cost-effective than standard flanges in some cases, especially for applications where many flanges are required, or the flanges need to meet unique or challenging requirements.

Features of Custom Flanges

  1. Tailored Dimensions: Custom flanges are fabricated to precise dimensions, ensuring a perfect fit for the specific project. This precision minimizes the need for modifications during installation.
  2. Customized Materials: Custom flanges can be crafted from various materials, including stainless steel, carbon steel, alloy steel, exotic alloys, and more. Material selection is based on factors such as corrosion resistance, temperature tolerance, and chemical compatibility, ensuring they meet the project’s specific needs.
  3. Facing Types: The facing type of custom flanges can be customized to match the sealing requirements of the project. Common face types include raised face, flat face, ring-type joint (RTJ), and tongue-and-groove.
  4. Hole Patterns: Custom flanges can feature hole patterns that align with the project’s bolting requirements, whether for regular bolt circles, special bolting patterns, or even non-standard numbers of bolt holes.
  5. Corrosion Resistance: Custom flanges can be designed with specific coatings, such as epoxy or galvanization, to enhance their resistance to corrosion in aggressive environments.
  6. Specialized Design: Their design can be customized to accommodate complex piping configurations, non-standard angles, or irregular pipe shapes, ensuring a secure and leak-free connection.
  7. Flawless Finish: Custom flanges are often subjected to rigorous quality control to ensure a flawless finish, minimizing the risk of leaks or defects.
  8. Enhanced Performance: The tailored design of custom flanges often results in improved system performance, reducing the risk of downtime and maintenance.

Applications and Industries of Custom Flanges 

Custom flanges are used in a wide variety of industries, including:

  1. Oil and gas: Custom flanges are commonly used in oil and gas production and processing facilities, where they are exposed to high pressures, high temperatures, and corrosive fluids.
  2. Chemical processing: Custom flanges are also commonly used in the chemical processing industry, where they are used to connect pipes and vessels that contain corrosive or hazardous chemicals.
  3. Power generation: Custom flanges are also used in the power generation industry, where they are used to connect pipes and vessels in boiler systems, steam turbine systems, and other power generation equipment.
  4. Food and beverage: Custom flanges are also used in the food and beverage industry, where they are used to connect pipes and vessels that contain food and beverage products.
  5. Pharmaceutical: Custom flanges are also used in the pharmaceutical industry, where they are used to connect pipes and vessels that contain pharmaceutical products.
  6. Other industries: Custom flanges are also used in various industries, including aerospace, shipbuilding, and water treatment.

Some specific examples of applications where custom flanges are commonly used include:

  1. Piping systems: Custom flanges connect pipes in various piping systems, including high-pressure and high-temperature piping systems, corrosive fluid piping systems, and sanitary piping systems.
  2. Process vessels: Custom flanges connect process vessels, such as heat exchangers, pressure vessels, and reactors.
  3. Equipment: Custom flanges connect equipment, such as pumps, valves, and compressors.


Q1. How are custom flanges different from standard flanges?

Custom flanges are designed to meet unique project requirements and are tailored to precise specifications. Standard flanges follow recognized industry standards and come in fixed sizes and designs.

Q2. What industries commonly use custom flanges?

Industries such as oil and gas, petrochemical, aerospace, power generation, marine, pharmaceutical, and more frequently employ custom flanges.

Q3. How do custom flanges enhance system performance?

Custom flanges are engineered for specific applications, optimizing performance, reducing downtime, and minimizing maintenance requirements.

Q4. Are custom flanges more cost-effective than standard flanges?

While custom flanges may have a higher initial cost, their long-term cost-effectiveness is realized through reduced maintenance and improved system efficiency.

Q5. Can custom flanges withstand extreme conditions?

Custom flanges can be made from materials that resist extreme temperatures, high pressures, and corrosive environments, ensuring durability in challenging conditions.

Q6. Do custom flanges comply with safety and quality standards?

Yes, custom flanges can be manufactured to meet industry-specific standards and certifications, guaranteeing compliance with regulations.

Q7. How can custom flanges address unique project challenges?

Custom flanges are designed as problem-solving solutions to overcome challenges that standard flanges may not effectively resolve.

Q8. Are custom flanges suitable for various industries?

Custom flanges are versatile and adaptable, making them suitable for various applications across different industries.

Q9. What is the typical service life of custom flanges?

Custom flanges’ specialized design and material selection contribute to a longer service life, ensuring sustained performance over time.

Q10. How do custom flanges provide a competitive advantage?

Custom flanges offer a competitive edge by ensuring optimal system performance and safety in industries where performance, reliability, and efficiency are paramount.


In conclusion, Custom flanges offer several advantages over standard flanges, including versatility, durability, safety, performance, and cost-effectiveness. They are ideal for various applications with unique or challenging requirements. Custom flanges are made from high-quality materials that withstand high pressures and temperatures. They can be designed to optimize the performance of piping systems and equipment and can be more cost-effective than standard flanges in some cases.

For all your flange steel requirements, consult with reputable manufacturers and suppliers like Texas Flange, who can provide the right flange solutions tailored to your application’s demands.