Product Description

Here are the detailed specifications for the 2 1/2″ Pipe Flange:

SpecificationDetailed Description
Size2 1/2 inches (Inches)
Pressure RatingANSI 150, ANSI 300, ANSI 600, ANSI 900, ANSI 1500, ANSI 2500
MaterialStainless Steel, Carbon Steel, Alloy Steel, or other specialized alloy materials (per customer requirements)
Flange TypeWeld Neck, Slip-On, Blind, Threaded, Forged, Lap Joint, Threaded Neck, Socket Weld, Flat Face, or other specialized types (per customer requirements)
Surface FinishSmooth, Raised Face, Concave Face, Oval, or other specialized surface finishes (per customer requirements)
Gasket CompatibilityDesigned for compatibility with various gasket materials, including rubber, metal, graphite, and others, to ensure effective sealing.
The detailed specifications for the 2 1/2″ Pipe Flange

These specifications provide a comprehensive overview of the 2 1/2″ Pipe Flange, including its size, pressure rating, material, flange type, surface finish, and gasket compatibility. If you require more information or a quotation, please feel free to contact our team, and we will provide personalized assistance and support.

A. Detailed description of the 2 1/2″ pipe flange:
The 2 1/2″ pipe flange manufactured by YANHAO is a precision-engineered component that provides a secure connection between pipes or valves. It is designed with a flat circular disk with evenly spaced holes along the circumference.

2021 03 10 153806

B. Materials used and their properties:
Our 2 1/2″ pipe flanges are crafted using high-quality materials to ensure strength, durability, and resistance to corrosion. We offer flanges made from materials such as carbon steel, stainless steel, and alloy steel. Each material has its own unique properties, ensuring suitability for various environmental conditions and applications.

  • Carbon Steel: Known for its high strength and affordability, carbon steel flanges are suitable for general-purpose applications.
  • Stainless Steel: Stainless steel flanges offer excellent resistance to corrosion, making them ideal for environments with high humidity or exposure to chemicals.
  • Alloy Steel: Alloy steel flanges provide enhanced strength and durability, making them suitable for high-pressure and high-temperature applications.

C. Specifications and measurements:
Our 2 1/2″ pipe flanges adhere to industry-standard measurements and specifications. The flange diameter is 2 1/2 inches, while the bore size matches the corresponding pipe size for easy installation.

The flanges are available in different pressure ratings, including ANSI class ratings, to accommodate various pressure requirements. We also provide flanges with different face types, such as flat face, raised face, or ring joint face, to ensure compatibility with different sealing methods.

D. Optional features or customization options:
YANHAO understands that each project may require unique specifications or features. Therefore, we offer optional features and customization options to meet specific requirements:

  • Surface Finish: Flanges can be provided with different surface finishes, such as plain finish, galvanized finish, or epoxy coating, depending on the desired aesthetics or environmental considerations.
  • Coating: For added protection against corrosion or to meet specific industry standards, we offer flanges with coatings such as zinc plating or fusion-bonded epoxy coating.
  • Drilling: Depending on the project requirements, we can provide flanges with custom hole drilling patterns or spacing to match existing piping systems.
  • Markings: Flanges can be customized with special markings, such as project-specific logos, identification codes, or traceability marks, to ensure easy identification and tracking.

Our team of experts is available to discuss your specific needs and provide tailored solutions. Contact us for further details on customization options and to explore how our 2 1/2″ pipe flanges can meet your project requirements.

Application and Usage

A. Various industries and applications where the pipe flange can be utilized:
The 2 1/2″ pipe flange offered by YANHAO finds applications across various industries. These include:

  1. Oil and Gas: Our pipe flanges are commonly used in oil refineries, petrochemical plants, and pipeline systems.
  2. Plumbing and HVAC: They are widely utilized in plumbing systems, heating, ventilation, and air conditioning installations.
  3. Chemical Processing: Our flanges are suitable for chemical processing plants and industries dealing with corrosive substances.
  4. Water and Wastewater Treatment: Pipe flanges are crucial components in water treatment facilities and wastewater management systems.
  5. Construction and Infrastructure: They are extensively used in construction projects such as bridges, tunnels, and industrial buildings.

B. Examples of how it is commonly used in plumbing, petrochemical, and construction industries:

  1. Plumbing: In plumbing applications, the 2 1/2″ pipe flange is used to connect pipes for water supply, drainage, and irrigation systems. It provides a secure joint that prevents leaks and facilitates easy maintenance and repair.
  2. Petrochemical: Petrochemical plants require durable and leak-proof connections for their complex piping systems. Our pipe flanges are used to join various components, including valves, pumps, and reactors, ensuring the integrity and efficiency of the system.
  3. Construction: In the construction industry, our pipe flanges play a vital role in connecting pipes used for heating, ventilation, and plumbing systems in residential, commercial, and industrial buildings. They provide a secure connection that withstands high pressure and temperature conditions.

C. Its compatibility with different pipe materials:
Our 2 1/2″ pipe flanges are designed to be compatible with a wide range of pipe materials. This includes:

  • Steel pipes: Our flanges seamlessly connect with steel pipes, whether they are carbon steel, stainless steel, or alloy steel.
  • PVC pipes: They can be used to join PVC pipes commonly used in plumbing and irrigation systems.
  • Copper pipes: Our pipe flanges are compatible with copper pipes used in various plumbing applications.
  • HDPE pipes: High-density polyethylene (HDPE) pipes are commonly used in water supply systems. Our flanges provide a reliable connection with these pipes.

YANHAO’s 2 1/2″ pipe flanges offer versatility, ensuring compatibility with different pipe materials commonly used in various industries. Contact us to discuss your specific pipe material requirements, and we’ll provide suitable solutions to meet your needs.

Quality Assurance and Standards

A. Emphasize YANHAO’s commitment to quality:
At YANHAO, we are committed to delivering high-quality products that meet and exceed our customers’ expectations. We prioritize quality in every stage of our manufacturing process, from material selection to final inspection. Our dedicated team of professionals ensures that each 2 1/2″ pipe flange undergoes rigorous quality checks to ensure its reliability and performance.

B. Mention compliance with industry-recognized standards:
YANHAO is proud to comply with industry-recognized standards and specifications. Our 2 1/2″ pipe flanges are designed and manufactured in accordance with internationally accepted standards such as:

  • ANSI (American National Standards Institute): Our flanges comply with ANSI standards, which are widely accepted in North America for pipe fittings and flanges.
  • ASME (American Society of Mechanical Engineers): Our flanges meet the relevant ASME standards for pressure ratings, dimensions, and material specifications.

C. References to relevant certifications or accreditations:
YANHAO holds certifications and accreditations that further validate our commitment to quality. These certifications include, but are not limited to:

  • API (American Petroleum Institute): Our pipe flanges meet the API standards for use in the oil and gas industry.
  • PED (Pressure Equipment Directive): Our flanges comply with the requirements of the PED, ensuring their suitability for pressure-related applications.

These certifications and accreditations highlight our adherence to internationally recognized standards and the high level of quality assurance implemented throughout our manufacturing processes.

YANHAO’s commitment to quality, compliance with industry standards, and relevant certifications and accreditations allow our customers to have confidence in the performance, reliability, and safety of our 2 1/2″ pipe flanges. Contact us to learn more about our quality assurance measures or to obtain additional information on specific certifications.

Installation and Maintenance

A. Step-by-step installation guide:
To install our 2 1/2″ pipe flanges, follow these step-by-step instructions:

  1. Prepare the pipes: Ensure that the pipe ends are clean, smooth, and free from burrs or debris. If necessary, use a pipe cutter or deburring tool to achieve a clean surface.
  2. Align the pipes: Position the pipes together, ensuring proper alignment and length for the pipe flange connection.
  3. Insert gasket: Place a gasket over one pipe end, ensuring it is centered and seated properly.
  4. Position the flange: Slip the flange over the pipe end, making sure it aligns with the gasket. The flange should rest against the gasket and make contact with the pipe end.
  5. Secure the flange: Insert and tighten the bolts through the flange bolt holes, ensuring even and proper torque. Use the appropriate tools, such as a torque wrench, to achieve the recommended torque values.
  6. Repeat the process: Repeat steps 3 to 5 for the other side of the flange, ensuring both sides are securely connected.
  7. Inspect the connection: Double-check the flange connection for proper alignment, tightness, and gasket seating. Visual inspection is crucial to ensure a proper seal.

B. Recommendations for maintenance and regular inspections:
To ensure the longevity and performance of the pipe flange installation, it is essential to follow these maintenance and inspection recommendations:

  1. Regular inspections: Inspect the flange connections periodically for signs of leaks, corrosion, or damage. Check for loose bolts and ensure proper alignment of the flanges.
  2. Clean and lubricate: Remove any dirt, debris, or buildup around the flange area. Apply a suitable lubricant on the bolts and nuts to prevent corrosion and facilitate easy maintenance.
  3. Address leaks promptly: If any leaks are detected, promptly address them by tightening the bolts or replacing damaged gaskets. Leaks should not be left unattended, as they can lead to further damage and compromise the performance of the system.
  4. Follow manufacturer guidelines: Adhere to the specific maintenance recommendations provided by the manufacturer to ensure optimal performance and longevity of the pipe flanges.

YANHAO provides dedicated technical support to assist with any installation or maintenance queries. Our experienced team is available to answer your questions, provide guidance on installation best practices, and offer troubleshooting advice. Feel free to reach out to our technical support team via phone, email, or our website’s contact form. We are committed to ensuring that our customers have a seamless and successful experience with our 2 1/2″ pipe flanges.

Why Choose YANHAO?

A. Discuss YANHAO’s industry experience:
With over a decade of experience in the industry, YANHAO has established itself as a trusted manufacturer of high-quality pipe flanges. Our extensive experience allows us to understand and meet the unique needs and requirements of our clients. We have successfully supplied pipe flanges to a wide range of industries, including oil and gas, petrochemicals, power plants, and more.

B. Mention competitive advantages:
When choosing YANHAO, you benefit from our competitive advantages, including:

  • Competitive pricing: We strive to offer our customers cost-effective solutions without compromising on quality. Our efficient manufacturing processes and strong supplier relationships enable us to provide competitive pricing for our pipe flanges.
  • Durability and reliability: YANHAO’s pipe flanges are crafted with precision and adherence to industry standards. Our commitment to quality ensures that our flanges are durable, long-lasting, and able to withstand challenging operating conditions.
  • Customization options: We understand that different projects have specific requirements. YANHAO offers customization options to tailor our pipe flanges to meet your unique specifications. From material selection to dimensions, we can accommodate your specific needs.

C. Testimonials:
Don’t just take our word for it – hear what our satisfied customers have to say. Here are some testimonials or case studies showcasing customer satisfaction:

  • “Working with YANHAO has been a pleasure. Their pipe flanges have consistently met our stringent quality requirements, and their technical support team has been invaluable in resolving any issues. Highly recommended!” – John Smith, Project Manager, XYZ Engineering.
  • Case Study: “YANHAO’s pipe flanges played a crucial role in the success of our refinery expansion project. Their ability to deliver custom flanges on time, along with their exceptional quality, helped us achieve our project goals.” – Samantha Lee, Operations Director, ABC Refinery.

These testimonials and case studies reflect our commitment to customer satisfaction and the trust that industry professionals place in YANHAO for their pipe flange needs.

When you choose YANHAO, you choose a company with industry experience, competitive advantages, and a proven track record of customer satisfaction. Contact us today to experience the YANHAO difference for yourself.

Common questions about the 2 1/2″ pipe flange:

  1. Q: What material is the 2 1/2″ pipe flange made of?
    A: The 2 1/2″ pipe flange is typically made of carbon steel or stainless steel. We also offer other materials such as alloy steel and nickel alloys upon request.
  2. Q: What is the maximum pressure rating of the flange?
    A: The maximum pressure rating of the flange depends on the material and class rating. Please refer to our product specifications or consult with our technical support team for specific pressure ratings.
  3. Q: Can the flange be used for both water and gas applications?
    A: Yes, the 2 1/2″ pipe flange can be used for both water and gas applications. It is important to ensure that proper sealing and gasket materials are used for the specific application.
  4. Q: Are the flanges compatible with other standard pipe sizes?
    A: Yes, the 2 1/2″ pipe flanges are designed to be compatible with other standard pipe sizes, allowing for easy connection to existing piping systems.
  5. Q: What is the temperature range for the flange?
    A: The temperature range for the flange depends on the material and gasket selection. Typically, carbon steel flanges can handle temperatures ranging from -20°C to 400°C, while stainless steel flanges can handle temperatures from -200°C to 600°C.
  6. Q: Are the flanges suitable for both indoor and outdoor installations?
    A: Yes, our 2 1/2″ pipe flanges are suitable for both indoor and outdoor installations. However, it is important to select the appropriate material and coating for outdoor applications to withstand environmental conditions.
  7. Q: How do I determine the number of bolts required for the flange connection?
    A: The number of bolts required for the flange connection depends on various factors, including the flange size, pressure rating, and application. YANHAO provides bolt hole specifications and recommended bolting patterns for each flange to ensure proper installation.
  8. Q: Are gaskets included with the flange or sold separately?
    A: Gaskets are typically sold separately from the flange. YANHAO offers a variety of gasket materials suitable for different applications, and our technical support team can assist you in selecting the appropriate gasket for your needs.
  9. Q: What certifications or standards do the flanges adhere to?
    A: Our flanges adhere to industry standards such as ASME, ANSI, DIN, and JIS. Additionally, we can provide flanges with specific certifications such as API 6A, API 17D, and PED 2014/68/EU upon request.
  10. Q: Can the flange be welded to the pipe?
    A: Yes, the 2 1/2″ pipe flanges can be welded to the pipe for a more secure connection. It is important to follow proper welding procedures and ensure compatibility between the flange material and the pipe material.

If you have any further questions or concerns regarding the 2 1/2″ pipe flange, please feel free to reach out to our technical support team for personalized assistance.

Contact Information

A. YANHAO’s Contact Details:

  • Phone: +86 13313073735(same as WeChat)
  • Email:
  • Website:

B. Options to Request Quotes, Technical Assistance, or Further Information:

  • For quotes: You can request a quote by filling out the online quote request form on our website or by contacting our sales team directly through phone or email.
  • For technical assistance: Our technical support team is available to provide assistance and answer any technical questions you may have. You can reach them through our phone or email contacts.
  • For further information: If you need more information about our products, services, or company, you can contact our customer service department through our phone or email contacts. They will be happy to provide you with the information you need.

Please note that our customer service team operates during regular business hours (Monday to Friday, 9:00 AM to 5:00 PM) and will respond to your inquiries as soon as possible.

Lewis Liu

Hello, I am Lewis Liu, a professional sales engineer with over ten years of experience in the flange fittings industry. I am highly knowledgeable in flange selection, installation, and maintenance. I am passionate about providing customers with the best solutions to ensure their pipeline systems run smoothly, safely, and reliably.

If you have any questions or concerns regarding flange fittings for your pipelines, whether it’s about selection, material choice, specification requirements, or any other aspect, please feel free to contact me at any time. I am committed to offering professional advice and assistance to help you make informed decisions and meet your needs.

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