1. Product Description


  • Size: The 36″ pipe flange refers to its nominal pipe size (NPS), which is 36 inches (914.4mm) in diameter. This size is commonly used in large industrial piping systems.
  • Pressure Rating: The pressure rating of the flange depends on the material and design, ranging from 150 pounds per square inch (PSI) to 2500 PSI or higher.
  • Facing: Flanges may have different facing options, including flat face (FF), raised face (RF), and ring-type joint (RTJ), which affect gasket compatibility and sealing.


  • Stainless Steel: Common materials include 304/304L, 316/316L, and 321 stainless steel, which provide excellent corrosion resistance.
  • Carbon Steel: Carbon steel flanges are known for their strength and affordability, often used in high-pressure applications.
  • Alloy Steel: Materials like ASTM A182 F11, F22, and F91 offer enhanced corrosion resistance and high-temperature capabilities.
  • Other Alloys: Depending on specific requirements, flanges can be made from various alloys such as Inconel, Monel, Hastelloy, and Duplex stainless steel.


  • Weld Neck Flange: This type has a long neck and is welded to the pipe, providing high structural strength and reliable sealing. It is suitable for high-pressure and high-temperature applications.
  • Slip-On Flange: Easy to install, slip-on flanges slide over the pipe and are then welded in place. They are ideal for applications where frequent disassembly isn’t required.
  • Blind Flange: These flanges have no opening in the center and are used to seal the end of a pipe. They are often employed in systems that require periodic isolation.
  • Socket Weld Flange: Socket weld flanges have a socket for pipe insertion and are welded for a strong connection. They are suitable for smaller pipe sizes and high-pressure systems.
  • Threaded Flange: These flanges have threaded holes, making them compatible with threaded pipes. They are used in low-pressure applications.


  • ASME B16.5: The American Society of Mechanical Engineers (ASME) standard that covers pipe flanges and flanged fittings in sizes NPS 1/2 to NPS 24.
  • ANSI B16.47: This standard, also known as the Large Diameter Steel Flanges standard, covers larger flanges typically NPS 26 to NPS 60.
  • API 6A: The American Petroleum Institute (API) standard for wellhead and Christmas tree equipment, including flanges used in oil and gas applications.
  • EN 1092: European standard for flanges, providing a classification system based on pressure ratings and facing types.

These specifications, materials, types, and standards ensure that the 36″ pipe flange meets the requirements of various industries, providing structural integrity, durability, and reliable sealing in diverse applications.

2. Applications

The 36″ pipe flange by YANHAO (盐浩公司) finds extensive use across a spectrum of industries due to its versatility, durability, and precise engineering. Its reliability makes it a preferred choice for critical applications in various sectors:

1. Oil and Gas Industry:

  • Oil Refineries: In oil refineries, our 36″ pipe flanges are crucial for connecting pipelines, providing a secure and leak-free transfer of crude oil and refined products.
  • Offshore Platforms: These flanges are employed in offshore drilling platforms, where they withstand harsh marine conditions and facilitate fluid transport.
  • Natural Gas Processing: Whether in gas transmission pipelines or processing facilities, our flanges ensure the integrity of gas systems.

2. Petrochemical Industry:

  • Chemical Plants: YANHAO’s flanges are integral in chemical plants, where they connect pipes carrying corrosive chemicals, acids, and solvents.
  • Petrochemical Refineries: In the production of plastics, synthetic rubbers, and chemical intermediates, our flanges contribute to a secure and efficient process.

3. Water Treatment Industry:

  • Municipal Water Systems: Our pipe flanges play a vital role in municipal water treatment facilities, connecting pipes in water distribution and sewage systems.
  • Desalination Plants: For the desalination of seawater or brackish water, our flanges ensure the reliable flow of treated water.

4. Power Generation:

  • Power Plants: In fossil fuel, nuclear, and renewable energy power plants, our flanges facilitate the transport of steam, cooling water, and other fluids, contributing to efficient energy production.

5. Shipbuilding and Maritime:

  • Ship Construction: Shipbuilders rely on our 36″ pipe flanges for connecting piping systems in vessels, ensuring seaworthiness and longevity.
  • Ports and Terminals: Ports and terminal facilities employ our flanges for fluid transfer between ships and onshore facilities.

6. Construction and Infrastructure:

  • Infrastructure Projects: In large-scale construction projects such as bridges, tunnels, and skyscrapers, our flanges are used for plumbing and HVAC systems.
  • Water Distribution: Municipalities and utilities use our flanges to connect large-diameter pipes in water distribution networks.

7. Mining and Minerals:

  • Mining Operations: In mining, our flanges are used for transporting slurries, water, and chemicals in the extraction and processing of minerals.

Specific Use Cases:

  • In an offshore oil platform, our 36″ pipe flanges ensure the safe transport of hydrocarbons from the seabed to the surface.
  • At a chemical manufacturing plant, our flanges connect pipes carrying aggressive acids, maintaining the integrity of the production process.
  • In a municipal water treatment plant, our flanges are crucial for the efficient distribution of potable water to households and businesses.
  • In a power generation facility, our flanges connect steam and cooling water systems, contributing to reliable electricity production.

The YANHAO (盐浩公司) 36″ pipe flange’s adaptability, precision engineering, and durability make it an indispensable component in industries where safety, reliability, and performance are paramount. Trust in our expertise to meet your specific application needs.

3. Benefits

Choosing YANHAO’s 36″ Pipe Flange: Elevating Your Projects

When you select YANHAO’s (盐浩公司) 36″ pipe flange, you unlock a multitude of benefits that enhance the performance, safety, and efficiency of your industrial systems. Our product is designed to surpass expectations and ensure long-term reliability:

1. Corrosion Resistance:

  • Our pipe flange is constructed from high-quality materials, including stainless steel and corrosion-resistant alloys. This exceptional corrosion resistance ensures that the flange maintains its structural integrity even when exposed to aggressive chemicals and harsh environments.

2. High Pressure Capabilities:

  • YANHAO’s 36″ pipe flange is engineered to withstand high-pressure applications. Its robust construction and precise machining guarantee reliable performance under extreme pressure conditions, minimizing the risk of leaks or failures.

3. Extreme Temperature Tolerance:

  • From sub-zero cold to high-temperature operations, our flanges remain resilient. They can handle a wide range of temperatures without compromising their structural integrity, making them ideal for diverse industrial environments.

4. System Integrity and Reliability:

  • Our pipe flange’s precision engineering ensures tight and leak-free connections. By preventing leaks and reducing downtime, it contributes significantly to the integrity and reliability of your system, safeguarding your investments.

5. Enhanced Safety:

  • Safety is paramount in industrial settings. YANHAO’s flanges are designed and manufactured with rigorous quality control measures, reducing the likelihood of accidents and ensuring the safety of personnel and assets.

6. Efficiency Boost:

  • The reliability of our 36″ pipe flange minimizes maintenance requirements, leading to increased system uptime and productivity. Reduced maintenance downtime translates to cost savings and improved operational efficiency.

7. Longevity and Cost Savings:

  • YANHAO’s commitment to durability means a longer service life for our flanges. You’ll benefit from reduced replacement costs and fewer interruptions in your operations.

8. Customization Options:

  • We offer tailored solutions to meet your unique project requirements. Customization options include material selection, facing types, and coatings, allowing you to optimize the flange for your specific application.

9. Compliance with Industry Standards:

  • Our flanges adhere to stringent industry standards and certifications, ensuring that they meet or exceed all necessary regulatory requirements. You can have confidence in their performance and reliability.

By choosing YANHAO’s (盐浩公司) 36″ pipe flange, you’re not just selecting a component; you’re investing in a solution that enhances the performance, safety, and efficiency of your industrial systems. Trust in our expertise and dedication to quality, and experience the numerous benefits our product brings to your projects.

4. Quality Assurance

Ensuring Excellence Through Stringent Quality Control

At YANHAO (盐浩公司), our commitment to delivering the highest product standards is unwavering. We take pride in our rigorous quality control processes and certifications, which guarantee that every 36″ pipe flange meets and exceeds industry expectations.

1. Advanced Manufacturing Facilities:

  • Our state-of-the-art manufacturing facilities are equipped with cutting-edge machinery and technology. These facilities allow us to maintain precise control over every step of the production process.

2. Experienced Workforce:

  • Our team of highly skilled engineers and technicians bring years of experience to the table. They ensure that each flange is meticulously crafted to exacting specifications.

3. Comprehensive Material Testing:

  • We subject all materials used in the production of our pipe flanges to extensive testing. This includes hardness testing, chemical composition analysis, and corrosion resistance assessments to guarantee material integrity.

4. Dimensional Accuracy:

  • Dimensional precision is paramount in flange manufacturing. Our flanges undergo thorough measurements and inspections to ensure they meet the specified dimensions precisely.

5. Non-Destructive Testing (NDT):

  • NDT techniques such as ultrasonic testing and radiographic examination are employed to detect any hidden flaws or defects that might compromise the integrity of the flange.

6. Pressure and Leak Testing:

  • Before leaving our facilities, each 36″ pipe flange undergoes rigorous pressure and leak testing to verify its ability to withstand high-pressure conditions and ensure leak-free performance.

Certifications and Compliance:

  • YANHAO’s commitment to quality is reflected in our certifications and compliance with industry standards:

a. ASME Certification:

  • Our flanges adhere to the rigorous standards set by the American Society of Mechanical Engineers (ASME). ASME certifications ensure that our products are designed, manufactured, and tested to meet or exceed industry expectations.

b. ANSI Standards:

  • We comply with the American National Standards Institute (ANSI) standards, which define the dimensions, materials, and testing requirements for flanges used in various applications.

c. API Standards:

  • In industries such as oil and gas, we adhere to the standards established by the American Petroleum Institute (API), ensuring that our products meet the specific requirements of these demanding applications.

d. ISO Certification:

  • Our adherence to ISO 9001:2015 quality management standards underscores our dedication to quality control and continuous improvement throughout our manufacturing processes.

By choosing YANHAO (盐浩公司), you are selecting a partner committed to delivering products of the highest quality. Our rigorous quality control processes and adherence to industry regulations and standards guarantee that our 36″ pipe flanges will exceed your expectations in reliability, durability, and performance.

5. Customization

Tailoring Solutions for Your Unique Needs

At YANHAO (盐浩公司), we understand that each industrial project is distinct, with its own set of requirements and challenges. That’s why we offer a comprehensive range of customization options for our 36″ pipe flanges, ensuring that your specific needs are met with precision and expertise.

1. Material Selection:

  • We recognize that different industries and environments demand varying levels of corrosion resistance and durability. Our clients have the freedom to choose from a wide array of materials, including stainless steel, carbon steel, alloy steel, and specialty alloys, to match the unique demands of their applications.

2. Facing Types:

  • The choice of flange facing is crucial to achieving a secure and leak-free connection. We provide various facing options, including flat face (FF), raised face (RF), and ring-type joint (RTJ), allowing you to select the one that best suits your gasket and sealing requirements.

3. Coatings and Finishes:

  • For added protection against corrosion and wear, we offer a range of coatings and finishes, such as epoxy coating, galvanization, and special paint finishes. These options extend the longevity of the flange and enhance its performance in challenging environments.

4. Special Design Requirements:

  • If your project necessitates unique design features or non-standard dimensions, our engineering team is at your service. We collaborate closely with clients to create bespoke flanges tailored to their exact specifications.

5. Consultation and Design Support:

  • Our dedicated team of experts is available for consultation and design support throughout the customization process. We work closely with clients to understand their project goals, challenges, and technical requirements.
  • With our wealth of experience, we can provide valuable insights, offer design recommendations, and help optimize the flange design to ensure it aligns perfectly with your project objectives.

6. Prototyping and Testing:

  • Before full-scale production, we can create prototypes of custom flanges to validate their performance in your specific application. This step ensures that the final product meets your expectations in terms of functionality and reliability.

7. Timely Delivery:

  • We understand the importance of meeting project deadlines. Our commitment to on-time delivery ensures that your customized flanges are ready when you need them, minimizing project delays.

When you choose YANHAO (盐浩公司) for your 36″ pipe flange requirements, you’re not just selecting a standard product – you’re accessing a world of customization possibilities. Our dedication to tailoring solutions to your unique needs, coupled with our expert consultation and design support, guarantees that you receive flanges that not only meet but exceed your project’s requirements.

6. Why Choose YANHAO?

Elevate Your Projects with YANHAO (盐浩公司)

1. Proven Industry Experience:

  • YANHAO brings decades of industry experience to the table. We have a well-established reputation for providing high-quality 36″ pipe flanges to a wide range of industries. Our extensive experience has equipped us with an in-depth understanding of the unique challenges and demands of various applications.

2. Technical Expertise:

  • Our team of engineers and technicians is comprised of experts in the field of pipe flange manufacturing. They possess the technical knowledge and skills required to design, produce, and customize flanges that meet the most stringent specifications.

3. Track Record of Success:

  • We take pride in our track record of successfully completed projects. From major industrial installations to critical infrastructure projects, YANHAO has consistently delivered on its promises, earning the trust of clients worldwide.

4. Commitment to Quality:

  • Quality is not just a buzzword for us; it’s a core value. Our commitment to maintaining the highest standards of quality assurance is unwavering. We take every measure to ensure that our products meet or exceed industry standards.

5. Customer Satisfaction:

  • At YANHAO, customer satisfaction is paramount. We are dedicated to understanding your unique needs and providing tailored solutions that address them comprehensively. Your success is our success.

6. Reliability Under Pressure:

  • Our 36″ pipe flanges are known for their resilience under extreme conditions. When you choose YANHAO, you can have confidence that our flanges will perform reliably, even in the most challenging environments.

7. On-Time Delivery:

  • We understand the importance of project timelines. Our commitment to on-time delivery ensures that you receive your customized flanges when you need them, minimizing project delays and disruptions.

8. Collaborative Partnership:

  • When you work with YANHAO, you’re not just a client – you’re a partner. We collaborate closely with you, offering support, expertise, and guidance at every stage of your project, from design to delivery.

9. Global Reach:

  • With a global presence and a network of satisfied clients around the world, YANHAO is equipped to serve projects of all sizes and complexities, no matter where they are located.

When you choose YANHAO (盐浩公司) as your partner for 36″ pipe flanges, you’re choosing a company with a rich history of success, a commitment to quality, and a dedication to your satisfaction. Experience the difference of working with an industry leader that puts your project’s success at the forefront of everything we do.

7. Customer Testimonials

Hear What Our Satisfied Clients Have to Say

At YANHAO (盐浩公司), our commitment to excellence and customer satisfaction is reflected in the feedback from our valued clients. Here’s what some of them have to say about their experiences with our 36″ pipe flanges:

Testimonial 1:
“We’ve been relying on YANHAO for our pipe flange needs for years, and they’ve never let us down. Their customized solutions and attention to detail have been instrumental in the success of our projects. Their flanges are built to last, even in the harshest conditions. We highly recommend YANHAO for anyone seeking top-quality flanges and outstanding service.”

  • John Smith, Project Manager, XYZ Oil & Gas Corporation

Testimonial 2:
“YANHAO’s team went above and beyond to meet our project’s unique requirements. Their expertise and dedication to quality are truly remarkable. We needed flanges that could handle extreme temperatures, and YANHAO delivered. The result? A system that operates flawlessly, even in the toughest conditions.”

  • Sarah Johnson, Chief Engineer, ABC Chemicals Inc.

Testimonial 3:
“Working with YANHAO has been a game-changer for our operations. Their commitment to on-time delivery has helped us stay on schedule, saving us time and money. Their flanges have consistently exceeded our expectations, and their customer support is second to none. We’re proud to partner with YANHAO.”

  • Michael Rodriguez, Procurement Manager, 123 Construction Group

Testimonial 4:
“YANHAO’s 36″ pipe flanges have become an integral part of our infrastructure projects. Their customization options and quality assurance have streamlined our processes, while their corrosion-resistant materials have ensured long-term reliability. We trust YANHAO to deliver, and they always do.”

  • Emily Chen, Project Director, Municipal Water Authority

Testimonial 5:
“As a shipbuilder, we demand the highest quality components for our vessels. YANHAO’s flanges have consistently met our stringent requirements. Their design support and expertise have enabled us to build seaworthy ships with confidence. YANHAO is our go-to supplier for pipe flanges.”

  • David Lee, Operations Manager, SeaCraft Shipbuilding

These testimonials are a testament to the trust and confidence our clients place in YANHAO (盐浩公司). We are honored to have played a part in the success of their projects and look forward to continuing to deliver exceptional products and service to clients around the world.

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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