I. Introduction

At Yanhao Company, we take pride in our commitment to excellence in the world of piping solutions. With decades of experience and a dedication to precision engineering, we are your trusted partner in delivering top-notch 8″ pipe flanges that meet the most demanding industry standards.

Pipe flanges are the unsung heroes of piping systems, serving as vital connecting components that ensure the integrity and efficiency of fluid transport. In the complex network of pipes and valves, 8″ pipe flanges play a crucial role in facilitating secure connections and preventing leaks. These flanges are indispensable across a wide spectrum of industries, from oil and gas to chemical processing, water treatment, and beyond.

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Here are the detailed specifications for the 8″ Pipe Flange:

SpecificationDetailed Description
Size8 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 8″ Pipe Flange

These specifications provide a comprehensive overview of the 8″ 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.

II. Key Features

Exceptional Material Quality

At Yanhao, we understand that the foundation of any durable and reliable 8″ pipe flange lies in the materials used. That’s why we exclusively source and employ high-grade materials, such as stainless steel, carbon steel, and alloy steel, in the production of our flanges. These materials are chosen for their exceptional strength, corrosion resistance, and longevity. Our commitment to material quality ensures that our flanges withstand the harshest conditions, providing you with a robust and long-lasting solution.

Precision Engineering and Manufacturing

Our 8″ pipe flanges are a testament to the art of precision engineering. Each flange is meticulously designed and manufactured with the utmost attention to detail. From the precise measurements to the fine-tuned tolerances, our flanges meet the highest industry standards, guaranteeing a perfect fit and optimal performance. Our state-of-the-art manufacturing processes ensure consistency and quality in every product, giving you peace of mind in your piping systems.

Resistance to Corrosion and Pressure

Corrosion and pressure are two formidable challenges in the world of piping systems. Yanhao’s 8″ pipe flanges are engineered to excel in both areas. Our corrosion-resistant materials, combined with advanced coatings and treatments, ensure that our flanges can withstand exposure to corrosive substances and harsh environments. Moreover, they are designed to handle a wide range of pressures, providing structural integrity and reliability in high-pressure applications. This resilience translates into reduced maintenance costs, increased system uptime, and enhanced safety for your operations.

By prioritizing material quality, precision engineering, and resistance to corrosion and pressure, Yanhao’s 8″ pipe flanges offer tangible benefits to our customers:

  1. Reliability: Our flanges provide a reliable connection that minimizes the risk of leaks, ensuring the integrity of your piping systems.
  2. Longevity: The use of high-quality materials and precision manufacturing means our flanges have a longer lifespan, reducing the need for frequent replacements.
  3. Cost Efficiency: Reduced maintenance and replacement costs translate into long-term cost savings for your projects.
  4. Safety: Our flanges are engineered to perform even in demanding conditions, enhancing safety in your operations.
  5. Peace of Mind: With Yanhao’s 8″ pipe flanges, you can trust that your critical piping systems are in capable hands, backed by a legacy of expertise and quality.

Invest in Yanhao’s 8″ pipe flanges to experience these key features firsthand and ensure the success and reliability of your piping systems.

III. Types of 8″ Pipe Flanges

When it comes to 8″ pipe flanges, Yanhao understands that one size doesn’t fit all. We offer a comprehensive selection of flange types, each uniquely designed to cater to specific applications and requirements. Our wide range of flange options ensures that you find the perfect fit for your piping system, whether it’s in the oil and gas industry, petrochemical sector, water treatment plants, or any other critical infrastructure.

1. Weld Neck Flanges

Applications: Weld neck flanges are a popular choice in high-pressure and high-temperature environments. They are commonly used in oil refineries, chemical plants, and power generation facilities.

Advantages: These flanges have a long tapered hub that provides excellent reinforcement, making them suitable for demanding applications. Their design helps distribute stress evenly across the pipe, reducing the risk of leakage.

2. Slip-On Flanges

Applications: Slip-on flanges are versatile and used in various industries, including water distribution, HVAC systems, and food processing plants.

Advantages: These flanges are easy to align and install. They have a lower initial cost compared to other types, making them an economical choice for many projects. They are also ideal when frequent maintenance or inspection is required.

3. Blind Flanges

Applications: Blind flanges are primarily used to seal the end of a pipe or vessel, making them essential in applications where complete closure is necessary, such as in gas and oil pipelines.

Advantages: They provide a tight seal, effectively isolating sections of a piping system. Blind flanges are essential for safety and maintenance purposes, allowing for easy access and inspection.

4. Other Specialized Flanges

Yanhao also offers a range of specialized flange types to meet specific project needs, including:

  • Threaded Flanges: Suitable for low-pressure systems and easy installation.
  • Socket Weld Flanges: Ideal for small-diameter pipes and high-pressure applications.
  • Lap Joint Flanges: Used in systems where frequent disassembly is required.
  • Orifice Flanges: Designed for flow measurement and control.

At Yanhao, we take pride in our extensive selection of 8″ pipe flanges. Whether you require a weld neck flange for a high-pressure oil rig or a slip-on flange for a commercial water supply system, we have the perfect solution for you. Our commitment to quality and precision ensures that our flanges perform flawlessly in diverse applications, and our ability to provide custom flange solutions further extends our versatility.

IV. Industry Applications

8″ pipe flanges are a cornerstone in the world of piping systems, finding indispensable utility across a wide spectrum of industries. Yanhao’s comprehensive range of flange options is designed to cater to the unique needs and challenges of these diverse sectors, ensuring the highest level of performance and reliability.

Common Industries Utilizing 8″ Pipe Flanges:

Oil and Gas Industry:

  • Applications: Yanhao’s 8″ pipe flanges are essential components in the construction and maintenance of pipelines for the transportation of oil, natural gas, and petrochemical products.
  • Example: Our flanges are trusted in the construction of offshore drilling platforms and onshore oil refineries, where safety and reliability are paramount.

Petrochemical Industry:

  • Applications: Petrochemical plants rely on 8″ pipe flanges for the secure transport of various chemicals and petrochemical products.
  • Example: Yanhao’s flanges play a critical role in connecting pipes in ethylene and propylene production units, ensuring chemical processes run smoothly and safely.

Water Treatment Plants:

  • Applications: Water treatment facilities use 8″ pipe flanges to construct pipelines for the distribution of potable water and wastewater management.
  • Example: Yanhao’s flanges are key components in the construction of municipal water supply systems, where water quality and sanitation are paramount.

Energy and Power Generation:

  • Applications: Power plants, including nuclear, coal, and gas-fired facilities, rely on 8″ pipe flanges for the transport of steam, cooling water, and other fluids.
  • Example: Our flanges are integral in the construction of nuclear reactor cooling systems, ensuring efficient and safe power generation.

Chemical Processing:

  • Applications: Chemical processing plants use 8″ pipe flanges for the transportation of various chemicals and gases in their manufacturing processes.
  • Example: Yanhao’s flanges are trusted in the construction of sulfuric acid production units, where resistance to corrosion is critical.

Yanhao’s expertise extends beyond manufacturing exceptional 8″ pipe flanges; it encompasses a deep understanding of the requirements and nuances of each industry we serve. Our success stories are a testament to our commitment to delivering tailored solutions:

  • Custom Solutions: Yanhao has a proven track record of providing custom flange solutions that address the unique challenges faced by our clients. Whether it’s designing specialized flanges for extreme temperature environments or creating flanges with specific material requirements, we’ve consistently delivered results.
  • Industry Partnerships: We have established strong partnerships with industry leaders and have been involved in major projects that have shaped the landscape of various sectors. These partnerships reflect our dedication to staying at the forefront of industry advancements.
  • Global Reach: Yanhao’s reach extends globally, allowing us to support projects in diverse regions and industries. Our commitment to quality, reliability, and adherence to international standards has earned us the trust of clients worldwide.

Choose Yanhao for your 8″ pipe flange needs, and experience firsthand the expertise and commitment to excellence that have made us a trusted partner across industries.

V. Quality Assurance

Excellence in Every Detail

At Yanhao, quality is not just a buzzword; it’s a commitment that permeates every aspect of our 8″ pipe flange manufacturing process. We understand that reliability and performance are paramount in piping systems, and that’s why we’ve established rigorous quality control processes to ensure that our products meet and exceed industry standards.

Rigorous Quality Control Processes

Our quality control processes are designed to leave no room for compromise. From the moment raw materials arrive at our facilities to the final inspection before shipping, every step is carefully monitored and evaluated. Our quality control includes:

  • Material Inspection: We meticulously inspect incoming materials to ensure they meet our stringent quality standards. Only the highest-grade materials are used in our flanges.
  • Precision Manufacturing: Our manufacturing processes are guided by precision and attention to detail. Advanced machinery and skilled technicians ensure each flange meets exact specifications.
  • Dimensional Checks: Every flange undergoes precise dimensional checks to guarantee it conforms to the required specifications and tolerances.
  • Pressure and Leak Testing: We subject our flanges to rigorous pressure and leak tests to ensure their integrity, resistance to pressure, and reliability under extreme conditions.

Certifications and Standards

Yanhao is proud to adhere to internationally recognized certifications and standards that reflect our unwavering commitment to quality and safety:

  • ISO Certification: We hold ISO 9001:2015 certification, which demonstrates our adherence to rigorous quality management standards.
  • ASME Standards: Our flanges are manufactured in accordance with the American Society of Mechanical Engineers (ASME) standards, ensuring compliance with industry best practices.
  • API Certification: Yanhao is API certified, demonstrating our capability to meet the demanding requirements of the oil and gas industry.

Customer Testimonials on Product Quality

Our dedication to quality is best reflected in the satisfaction of our valued customers. Here are some testimonials from our clients:

  1. John T., Project Manager (Oil & Gas): “Yanhao’s 8″ pipe flanges have been a game-changer for our offshore drilling projects. The quality and reliability of their products have exceeded our expectations.”
  2. Sarah M., Plant Manager (Chemical Processing): “We trust Yanhao for our chemical processing needs. Their flanges have consistently delivered on performance and corrosion resistance.”
  3. David P., Water Treatment Engineer: “Yanhao’s commitment to quality is evident in the durability and longevity of their flanges. They’ve been instrumental in maintaining our water treatment infrastructure.”

These testimonials underscore the confidence that industry professionals place in Yanhao’s products and our unwavering commitment to quality assurance. When you choose Yanhao, you’re choosing flanges that are built to perform and endure, backed by a legacy of excellence and customer satisfaction.

VI. Customization Options

Tailored Solutions for Your Unique Needs

Yanhao understands that every project is unique, and sometimes standard off-the-shelf solutions may not suffice. That’s where our commitment to customization comes into play. We have a proven track record of providing bespoke 8″ pipe flange solutions that precisely match the specific requirements of our clients.

1. Tailored Dimensions: Yanhao can customize the dimensions of our 8″ pipe flanges to meet your exact specifications. Whether you need flanges with non-standard diameters, thicknesses, or facing dimensions, we have the capability to deliver.

2. Material Selection: Our range of materials isn’t limited to a few standard options. We work closely with you to select materials that are best suited for your project’s unique environmental and operational conditions.

3. Coatings and Finishes: Yanhao can provide specialized coatings and finishes to enhance corrosion resistance, protect against wear and tear, or meet specific industry requirements.

4. Special Features: If your project requires unique features such as additional bolting holes, heat tracing, or special sealing surfaces, we have the expertise to design and manufacture flanges to your exact specifications.

Benefits of Tailored Products

  1. Optimized Performance: Customized 8″ pipe flanges are engineered to perform at their best in your specific application, improving overall system performance and efficiency.
  2. Cost Efficiency: By eliminating the need for modifications or workarounds, tailored flanges can reduce installation time and costs.
  3. Enhanced Safety: Flanges designed for your project’s unique needs reduce the risk of compatibility issues, leaks, and failures, contributing to a safer working environment.
  4. Increased Lifespan: Customization ensures that the flanges are designed to withstand the specific challenges of your project, resulting in longer service life.

Examples of Successful Customization Projects

1. Offshore Drilling Rig: Yanhao collaborated with an offshore drilling company to design and manufacture 8″ pipe flanges with a special corrosion-resistant coating to withstand the harsh marine environment. These custom flanges improved the durability and longevity of the rig’s piping system.

2. Petrochemical Expansion: A petrochemical plant required 8″ pipe flanges with non-standard facing dimensions to accommodate a specialized gasket. Yanhao’s customized flanges ensured a perfect fit and enhanced sealing performance.

3. High-Pressure Gas Pipeline: Yanhao provided custom 8″ pipe flanges with additional bolting holes for a high-pressure natural gas pipeline project. These flanges improved the ease of installation and maintenance.

These examples demonstrate Yanhao’s ability to tailor our 8″ pipe flanges to meet the unique needs of our clients, ensuring seamless integration into their projects and superior performance. When you choose Yanhao, you’re choosing a partner that can deliver solutions precisely matched to your requirements.

VII. Ordering and Support

Ordering 8″ pipe flanges from Yanhao is a straightforward and customer-centric process. We are committed to ensuring that your experience is hassle-free, and our dedicated support team is here to assist you every step of the way.

How to Order 8″ Pipe Flanges:

  1. Browse Our Catalog: Start by exploring our comprehensive catalog of 8″ pipe flanges on our website. You can find detailed product information, specifications, and customization options.
  2. Request a Quote: Once you’ve identified the flanges that meet your requirements, request a quote directly from the product page. Fill in the requested details, including the quantity you need and any specific customization requests.
  3. Receive a Quote: Our team will promptly review your request and provide you with a detailed quote that includes pricing, lead times, and any customization costs.
  4. Place Your Order: If you’re satisfied with the quote, you can place your order by confirming the details with our sales team. We accept various payment methods for your convenience.
  5. Shipping and Delivery: We arrange for the efficient and secure shipment of your 8″ pipe flanges to your desired location, whether it’s a project site, warehouse, or facility.

Customer Support and Assistance

At Yanhao, we take pride in our commitment to exceptional customer support. Our dedicated team of experts is available to assist you throughout the purchasing process:

  • Product Guidance: If you have any questions about product specifications, material selection, or customization options, our team can provide expert guidance to help you make informed decisions.
  • Order Tracking: We offer order tracking services, allowing you to monitor the progress of your order and receive updates on its status and estimated delivery date.
  • Technical Support: Should you encounter any technical issues or require installation assistance, our technical support team is just a call or email away to provide timely solutions.
  • Customization Consultation: If you’re considering customization, our engineers can work closely with you to understand your project’s unique requirements and recommend the most suitable solutions.

Contact Details and Quick Inquiry Form

For inquiries, support, or to place an order, you can reach out to Yanhao through the following contact channels:

  • Phone: +86 13313073735(same as WeChat)
  • Email: flanges.yh@gmail.com
  • Address: Xiaozhuangzi Road Section, Xinda Highway, Mengcun Hui Autonomous County, Cangzhou City, Hebei Province

We also offer a convenient quick inquiry form on our website. Simply fill in your name, email address, phone number, and a brief message about your inquiry, and our team will get back to you promptly.

At Yanhao, we believe that exceptional customer service is an integral part of the buying experience. We are here to ensure that your 8″ pipe flange procurement process is smooth, transparent, and tailored to your needs. Choose Yanhao for your piping solutions, and experience the difference of customer-focused support.


At Yanhao, we understand that choosing the right 8″ pipe flanges is a critical decision for your projects. To help you make informed choices, we’ve compiled a list of frequently asked questions:

1. What are 8″ pipe flanges used for?

Answer: 8″ pipe flanges are used to connect pipes or valves in various industrial applications. They provide a secure and leak-proof connection, making them essential in industries such as oil and gas, petrochemical, water treatment, and more.

2. What materials are 8″ pipe flanges typically made from?

Answer: 8″ pipe flanges can be made from various materials, including stainless steel, carbon steel, and alloy steel. The choice of material depends on factors such as the application’s temperature, pressure, and the type of fluid being transported.

3. How do I select the right type of 8″ pipe flange for my project?

Answer: Choosing the right type of flange depends on factors like the application, pressure rating, and pipe material. Consult our experts who can provide guidance based on your project’s specific requirements.

4. Can I customize 8″ pipe flanges to suit my project’s needs?

Answer: Yes, Yanhao offers customization options for 8″ pipe flanges. We can tailor dimensions, materials, coatings, and other features to match your project’s unique requirements.

5. What industry standards do Yanhao’s 8″ pipe flanges adhere to?

Answer: Our flanges adhere to industry standards such as ASME, ISO, and API. We are committed to ensuring our products meet or exceed these standards to guarantee their quality and safety.

6. How can I request a quote for 8″ pipe flanges?

Answer: Requesting a quote is easy. Simply browse our catalog, select the product(s) you need, and fill out the quote request form on our website. Our team will respond promptly with a detailed quote.

7. What is the lead time for 8″ pipe flange orders?

Answer: Lead times may vary depending on factors like product availability and customization requirements. We will provide you with an estimated lead time in your quote.

8. Does Yanhao provide technical support for installation and troubleshooting?

Answer: Yes, we offer technical support to assist with installation and troubleshooting. Our experienced team is here to ensure that our products perform optimally in your specific application.

9. Are Yanhao’s 8″ pipe flanges suitable for international projects?

Answer: Yes, Yanhao has a global presence and can supply flanges for international projects. We have experience working with clients worldwide and can meet international standards and requirements.

10. How can I get in touch with Yanhao for further inquiries?

Answer: You can contact Yanhao through phone, email, or by using the quick inquiry form on our website. Our customer support team is ready to assist you with any questions or concerns you may have.

At Yanhao, we are committed to providing you with the information you need to make informed decisions about 8″ pipe flanges for your projects. If you have additional questions or need further assistance, please don’t hesitate to reach out to our team. Your satisfaction and project success are our top priorities.

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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