Welcome to Yanhao Company’s (YANHAO) product page dedicated to our esteemed 42″ Pipe Flange. As a leader in industrial solutions, we take pride in presenting a product that stands at the forefront of performance, reliability, and precision engineering.

In the world of pipelines and industrial applications, a 42″ Pipe Flange plays a pivotal role in connecting and securing critical systems. It’s more than just a component; it’s a cornerstone of safety and efficiency in various industries. Our product page is your gateway to exploring the profound capabilities and exceptional qualities of our 42″ Pipe Flange.

Join us as we delve into the specifications, features, customizations, and the wide array of industries benefiting from this remarkable product. At Yanhao, we’re dedicated to delivering expertise, authority, and trustworthiness in every aspect of our solutions.

Let’s embark on this journey to discover how our 42″ Pipe Flange can elevate the performance and reliability of your industrial applications.

Specifications of 42″ Pipe Flange

Our 42″ Pipe Flange is engineered to meet the highest standards of performance and reliability. Below, you’ll find a detailed breakdown of its key specifications:


  • Diameter: 42 inches (1067 mm)
  • Nominal Pipe Size (NPS): 42″


  • We offer a range of material options to suit your specific application needs, including:
  • Carbon Steel: Ideal for standard industrial applications.
  • Stainless Steel: Resistant to corrosion and suitable for harsh environments.
  • Alloy Steel: Enhanced strength and durability for specialized requirements.
  • Specialized Alloys: Tailored for extreme conditions, such as high temperatures or corrosive atmospheres.

Facing Type:

  • Our 42″ Pipe Flange is available with various facing types to ensure optimal sealing and compatibility with gaskets, including:
  • Flat-Faced (FF): Suitable for low-pressure applications.
  • Raised-Faced (RF): Ideal for most standard applications.
  • Ring-Type Joint (RTJ): Provides a metal-to-metal seal for high-pressure and high-temperature systems.
  • Male-and-Female (M&F): Ensures a secure, leak-free connection in specific applications.

Pressure Rating:

  • Our 42″ Pipe Flange is designed to meet a wide range of pressure requirements, ensuring safety and reliability in your system. Pressure ratings vary depending on the material and facing type chosen, with options typically including:
  • ANSI/ASME B16.5 Class 150 to Class 2500.
  • API 6A/6B for oil and gas applications.
  • Customized pressure ratings available upon request to match your specific operational needs.

These specifications demonstrate our commitment to providing a versatile and customizable 42″ Pipe Flange that can be tailored precisely to your industrial requirements. Whether you need it for standard applications or the most demanding environments, Yanhao Company (YANHAO) has the solution to ensure the integrity of your piping systems.

Key Features

Our 42″ Pipe Flange boasts a set of exceptional features that set it apart as a reliable and high-performance solution for industrial applications. Let’s delve into the key features that make it an exceptional choice:

1. Durability and Strength:

  • Built to endure the rigors of industrial environments, our 42″ Pipe Flange is engineered for exceptional durability and strength. It can withstand high-pressure and high-temperature conditions, ensuring longevity and reliability.

2. Corrosion Resistance:

  • Corrosion can compromise the integrity of industrial systems. Our flanges are available in corrosion-resistant materials, such as stainless steel and specialized alloys, offering superior protection against corrosive substances, chemicals, and harsh atmospheres.

3. Precision Engineering:

  • Our flanges are meticulously machined with precision engineering, guaranteeing precise dimensions and a perfect fit. This precision is essential for creating a secure and leak-free connection in your piping system.

4. Versatile Facing Types:

  • We offer a range of facing types, including flat-faced (FF), raised-faced (RF), ring-type joint (RTJ), and male-and-female (M&F). This versatility allows you to choose the facing type that best suits your sealing requirements.

5. Compliance with Industry Standards:

  • Our 42″ Pipe Flange adheres to stringent industry standards, including ANSI/ASME B16.5, API 6A/6B, and ASTM specifications. This commitment to standards ensures that our product consistently meets the quality and safety expectations of various industries.

6. Customizable Options:

  • Recognizing that every application is unique, we offer customization options. Tailor your flange with specific materials, dimensions, and pressure ratings to precisely match your project’s requirements.

7. Enhanced Safety:

  • Safety is paramount in industrial operations. Our flanges are designed to provide a secure, leak-free connection, reducing the risk of accidents and ensuring the safety of your workforce and equipment.

8. Wide Industry Applicability:

  • Our 42″ Pipe Flange finds applications across diverse industries, from petrochemical plants and oil refineries to power generation, water treatment, and beyond. Its adaptability makes it a go-to choice for professionals seeking reliability and performance.

9. Quality Assurance:

  • We prioritize quality control and rigorous testing procedures, including pressure testing, material inspections, and compliance checks. Our commitment to quality ensures that each flange meets or exceeds industry standards.

These key features collectively make our 42″ Pipe Flange an exceptional and trustworthy choice for your industrial piping needs. Whether you require resilience in harsh environments, precision in engineering, or compliance with the strictest industry standards, our product delivers on all fronts, safeguarding the efficiency and safety of your operations.

Industries Served

Our versatile 42″ Pipe Flange serves as a critical component in a wide range of industries, contributing to the success of various applications. Below, we explore the diverse industries that benefit from the reliability and performance of our flange, along with some real-world examples:

1. Oil and Gas:

  • In the oil and gas sector, our 42″ Pipe Flange plays a pivotal role in connecting pipelines for the transportation of crude oil, natural gas, and refined products. It ensures secure and leak-free connections in offshore and onshore drilling operations. Example: Offshore drilling platforms rely on our flanges to withstand the harsh conditions of saltwater and high pressures, contributing to the safe and efficient extraction of oil and gas.

2. Petrochemical and Chemical Processing:

  • Chemical processing plants require robust and corrosion-resistant components. Our flanges are ideal for connecting pipes that transport chemicals, acids, and corrosive substances. Example: Chemical processing facilities use our flanges to maintain the integrity of their pipelines, preventing leaks that could lead to environmental hazards and production downtime.

3. Power Generation:

  • Power generation plants, including coal-fired, nuclear, and renewable energy facilities, rely on our 42″ Pipe Flange for connecting steam and cooling water pipelines, ensuring efficiency and reliability. Example: Coal-fired power plants use our flanges to connect high-temperature steam lines, contributing to the generation of electricity for millions of households.

4. Water Treatment and Distribution:

  • Municipal and industrial water treatment facilities benefit from our flanges in their piping systems, providing leak-free connections for the treatment and distribution of clean water. Example: Municipal water treatment plants use our flanges to connect pipelines that deliver safe drinking water to communities.

5. Infrastructure Development:

  • Infrastructure projects, including bridges, tunnels, and highways, rely on our flanges for water drainage and sewage systems, ensuring structural integrity. Example: In the construction of major transportation tunnels, our flanges connect drainage pipes, preventing water ingress and ensuring the safety of commuters.

6. Aerospace and Defense:

  • In aerospace testing facilities and military applications, precision and reliability are paramount. Our flanges are used in air and space testing environments, where they must withstand extreme conditions. Example: Aerospace testing facilities employ our flanges to connect high-pressure air and fuel lines during engine testing, ensuring safety and data accuracy.

7. Manufacturing and Industrial Processes:

  • Manufacturing and industrial facilities use our flanges in various processes, including the conveyance of fluids, chemicals, and materials. Example: Automotive manufacturing plants use our flanges in their hydraulic systems, contributing to the efficient production of vehicles.

These examples illustrate the versatility and reliability of our 42″ Pipe Flange across a spectrum of industries. It’s a testament to our commitment to delivering solutions that meet the unique demands of each sector, contributing to the success and safety of industrial operations worldwide.

Quality Assurance

At Yanhao Company (YANHAO), our commitment to quality is at the core of everything we do. We understand the critical role our 42″ Pipe Flange plays in industrial applications, and we leave no stone unturned in ensuring its reliability and performance. Here’s an overview of our unwavering commitment to quality control and testing procedures:

1. Rigorous Testing Protocols:

  • Before our 42″ Pipe Flange leaves our manufacturing facility, it undergoes a series of rigorous tests and inspections. These tests include pressure testing, material composition analysis, dimensional checks, and surface finish assessments. Each component must meet our stringent quality criteria.

2. Material Inspection:

  • We source our materials from reputable suppliers and conduct comprehensive material inspections to verify their quality and suitability for our flanges. This ensures that the materials used are of the highest standard, contributing to the product’s longevity and performance.

3. Precision Manufacturing:

  • Our flanges are manufactured with precision engineering, using state-of-the-art machinery and processes. The precision of our manufacturing ensures that each flange aligns perfectly with industry standards and specifications.

4. Compliance with Industry Standards:

  • Our 42″ Pipe Flange is designed and manufactured to meet or exceed industry standards and certifications. These standards include ANSI/ASME B16.5, API 6A/6B, and ASTM specifications, among others. This commitment to compliance ensures that our product consistently meets the quality and safety expectations of various industries.

5. Traceability:

  • We maintain comprehensive records of every flange produced, enabling traceability throughout the manufacturing process. This traceability ensures accountability and transparency, further enhancing our commitment to quality.

6. Certifications:

  • Our 42″ Pipe Flange is accompanied by the necessary certifications and documentation to validate its compliance with industry standards. These certifications provide our customers with the assurance that they are investing in a product of the highest quality.

7. Continuous Improvement:

  • We are dedicated to a culture of continuous improvement. Our quality control processes are regularly reviewed and refined to incorporate the latest advancements in technology and industry best practices.

Our commitment to quality control and testing procedures is not just a process; it’s a promise. When you choose Yanhao’s 42″ Pipe Flange, you are selecting a product that has been meticulously designed, manufactured, and tested to deliver exceptional reliability and performance in even the most demanding industrial applications. Your trust in our product is a testament to our dedication to quality.

Customization Options

We understand that every industrial application is unique, and a one-size-fits-all approach may not always suffice. That’s why Yanhao Company (YANHAO) offers a comprehensive range of customization options for our 42″ Pipe Flange, allowing you to tailor the product to your precise requirements. Here’s how you can request customized 42″ Pipe Flanges and some examples of past customizations:

1. Material Selection:

  • Choose the material that best suits your application’s needs. Options include:
    • Carbon Steel: For standard industrial applications.
    • Stainless Steel: Ideal for corrosion resistance in aggressive environments.
    • Alloy Steel: Enhanced strength for specialized requirements.
    • Specialized Alloys: Tailored for extreme conditions such as high temperatures or corrosive atmospheres.

2. Facing Type:

  • Select the facing type that aligns with your sealing requirements:
    • Flat-Faced (FF): Suitable for low-pressure applications.
    • Raised-Faced (RF): Ideal for most standard applications.
    • Ring-Type Joint (RTJ): Provides a metal-to-metal seal for high-pressure and high-temperature systems.
    • Male-and-Female (M&F): Ensures a secure, leak-free connection in specific applications.

3. Pressure Rating:

  • Specify the pressure rating that matches your system’s operating conditions. We offer a range of pressure ratings to ensure safety and reliability, including options such as ANSI/ASME B16.5 Class 150 to Class 2500 and API 6A/6B for oil and gas applications.

4. Dimensions:

  • Tailor the dimensions of the flange to fit seamlessly within your existing piping system. Custom dimensions can be accommodated to ensure a perfect fit.

5. Coatings and Finishes:

  • Choose from a variety of coatings and finishes to enhance durability, corrosion resistance, and aesthetics. Options include epoxy coatings, galvanization, and specialized protective coatings.

6. Additional Features:

  • Request additional features such as bolt holes, drilling patterns, or special markings to meet specific project requirements.

Examples of Past Customizations:

  • High-Temperature Application: A petrochemical plant requested 42″ Pipe Flanges with stainless steel material and RTJ facing for high-temperature steam lines, ensuring durability and leak-free performance under extreme conditions.
  • Marine Environment: An offshore drilling platform required 42″ Pipe Flanges with specialized anti-corrosion coatings to withstand the corrosive effects of saltwater and harsh offshore conditions.
  • Structural Integration: A construction project for a major bridge required 42″ Pipe Flanges with custom dimensions to seamlessly integrate within the bridge’s drainage system, ensuring structural integrity.

Our commitment to customization ensures that our 42″ Pipe Flange becomes a tailored solution that precisely fits your project’s unique demands. Whether you need to address specific material requirements, pressure ratings, or dimensional constraints, Yanhao’s customization options empower you to achieve optimal performance and reliability in your industrial applications.

Ordering Process

Ordering our 42″ Pipe Flange is a straightforward and efficient process designed to provide you with the product you need when you need it. Here’s a step-by-step guide to our ordering process:

1. Contact Us:

  • Begin by reaching out to Yanhao Company via our website, email, phone, or live chat. Our customer support team is readily available to assist you with your inquiries and order requests.

2. Consultation and Customization:

  • If you require customizations to your 42″ Pipe Flange, our team will work closely with you to understand your specific needs. We will help you select the right material, facing type, pressure rating, dimensions, and any additional features required.

3. Quotation:

  • Based on your specifications and customization choices, we will provide you with a detailed quotation that includes pricing, lead times, and any applicable shipping costs.

4. Order Confirmation:

  • Once you are satisfied with the quotation, confirm your order with our team. We will guide you through the necessary paperwork and documentation, ensuring a smooth and hassle-free ordering process.

5. Production and Quality Control:

  • After receiving your order, we will commence production, adhering to your exact specifications. Our stringent quality control procedures guarantee that your customized flanges meet our high-quality standards.

6. Lead Times:

  • Lead times for your customized 42″ Pipe Flange may vary depending on factors such as material availability, complexity of customization, and order volume. Our team will provide you with a clear timeline so you can plan accordingly.

7. Shipping and Delivery:

  • We offer flexible shipping options to accommodate your project’s needs. Whether you require standard shipping or expedited delivery, we can arrange it. Our packaging ensures that your flanges arrive in pristine condition.

8. Installation Support:

  • If needed, our technical support team can provide guidance and recommendations for the installation of your 42″ Pipe Flanges. We are here to assist you at every step of the way to ensure a successful integration into your system.

9. Post-Sale Support:

  • Our commitment to your satisfaction doesn’t end with delivery. We offer post-sale support to address any questions, concerns, or technical assistance you may require. Our customer support team is just a call or email away.

10. Feedback and Continuous Improvement:

  • We value your feedback. After your project is complete, we encourage you to share your experience with us. Your input helps us continuously improve our products and services.

At Yanhao Company, we prioritize efficiency and transparency in our ordering process, ensuring that you receive precisely what you need, on time, and with the support you deserve. Our dedicated team is here to assist you at every stage, from inquiry to installation, making your experience with us as seamless and satisfying as possible.


We understand that you may have questions about our 42″ Pipe Flanges and how to best utilize them in your industrial applications. Here are answers to some frequently asked questions:

Q1: How do I install a 42″ Pipe Flange?

  • A: Installation involves aligning the flange faces, inserting gaskets, and tightening bolts evenly in a crisscross pattern to achieve a secure and leak-free connection. Ensure proper torque is applied according to industry standards and specifications.

Q2: Can I get custom dimensions for my flange?

  • A: Yes, we offer customization options, including dimensions, to match your project’s requirements. Our team will work closely with you to ensure your flange fits perfectly within your piping system.

Q3: What are the maintenance requirements for 42″ Pipe Flanges?

  • A: Regular inspections for signs of wear, corrosion, or leakage are crucial. Replace gaskets when necessary and perform visual checks to ensure bolts remain properly torqued. Proper maintenance helps extend the life of your flange.

Q4: Are your 42″ Pipe Flanges suitable for high-pressure applications?

  • A: Yes, our flanges are available with various pressure ratings to accommodate high-pressure applications. Select the appropriate pressure rating to match your system’s requirements.

Q5: Can I use your flanges in corrosive environments?

  • A: Absolutely. We offer corrosion-resistant materials and coatings to ensure the longevity of our flanges in corrosive environments. Stainless steel and specialized alloys are excellent choices for such conditions.

Q6: Do you provide technical support for installation and troubleshooting?

  • A: Yes, our technical support team is available to provide guidance and assistance with installation, troubleshooting, and any technical queries you may have.

Q7: Are your 42″ Pipe Flanges compliant with industry standards?

  • A: Yes, our flanges adhere to stringent industry standards, including ANSI/ASME B16.5, API 6A/6B, and ASTM specifications. We prioritize compliance to ensure the safety and quality of our products.

Q8: What is the typical lead time for ordering customized flanges?

  • A: Lead times may vary based on customization complexity and order volume. Our team will provide you with an accurate lead time estimate during the quotation process.

Q9: Can I request expedited shipping for my order?

  • A: Yes, we offer expedited shipping options to accommodate urgent requirements. Please discuss your shipping preferences with our team during the ordering process.

Q10: How can I contact Yanhao Company for further inquiries?

  • A: You can reach us through our website, email (flanges.yh@gmail.com), phone, or live chat. Our customer support team is dedicated to assisting you with all your inquiries and needs.

If you have any additional questions or need further assistance, please don’t hesitate to contact us. We’re here to provide you with the information and support you require for a successful experience with our 42″ Pipe Flanges.

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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