Specifications of 58″ Pipe Flange:

  • Size: The 58″ pipe flange is designed to fit pipes with a nominal size of 58 inches (NPS 58).
  • Pressure Rating: It is rated for a specific maximum pressure, typically in pounds per square inch (psi) or bar.
  • Facing: Flanges can have raised faces (RF), flat faces (FF), or ring-type joints (RTJ).
  • Connection Type: Specify whether it’s a weld neck, slip-on, blind, or socket weld flange.
  • Bolt Circle Diameter: Provide the diameter of the circle formed by bolt holes for easy matching with companion flanges.


  • Elaborate on the material options available, including:
  • Carbon steel: Suitable for general-purpose applications.
  • Stainless steel: Resistant to corrosion and suitable for corrosive environments.
  • Alloy steel: Enhanced strength and durability for demanding applications.
  • Discuss the specific grades and alloys used within these material categories.


  • Go into detail regarding classification:
  • ANSI/ASME B16.5: The American standard for flanges, with various pressure classes.
  • DIN EN 1092-1: The European standard with different PN (Pressure Nominal) ratings.
  • JIS B2220: The Japanese Industrial Standard specifying flange dimensions.
  • Explain how classification impacts factors like pressure and temperature handling.


  • Specify the exact standards adhered to during manufacturing, such as:
  • ANSI/ASME B16.5: Discuss the dimensions, tolerances, and material requirements.
  • DIN EN 1092-1: Explain how this standard ensures compatibility with European systems.
  • JIS B2220: Highlight its significance in the Japanese market.

Customization Options:

  • Provide a comprehensive list of customization options, including:
  • Facings: Options for raised face, flat face, and RTJ.
  • Materials: Offer various material grades based on application needs.
  • Drilling Patterns: Describe the ability to customize bolt hole patterns.
  • Special Requirements: Mention any additional customization requests supported.

Quality Assurance:

  • Explain the quality control process in detail:
  • Non-destructive Testing (NDT): Methods like ultrasonic testing, radiographic inspection, and dye penetrant testing.
  • Inspection Protocols: Discuss the rigorous inspection procedures in place.
  • Certifications: Highlight certifications like ASME, ASTM, and NACE.


  • Showcase YANHAO’s commitment to compliance:
  • ISO 9001: Describe the ISO certification, indicating commitment to quality management.
  • PED (Pressure Equipment Directive): Explain how PED compliance is essential for the European market.


  • Offer an extensive list of applications, going beyond industries to specific use cases within each industry:
  • Oil and Gas: Include applications like pipelines, refineries, and offshore platforms.
  • Petrochemical: Mention use in chemical plants, reactors, and storage tanks.
  • Power Generation: Highlight applications in power plants, including nuclear.
  • Water Treatment: Specify usage in water purification and distribution.
  • Shipbuilding: Detail maritime applications such as ship construction and repair.
  • HVAC: Explain how they’re used in heating, ventilation, and air conditioning systems.
  • Construction: Discuss their role in infrastructure projects like bridges and tunnels.

Key Features of YANHAO’s 58″ Pipe Flange:

  1. Premium Materials: YANHAO exclusively utilizes high-quality materials, such as corrosion-resistant stainless steel and robust alloy steel, ensuring longevity and reliability even in harsh environments.
  2. Precision Engineering: Each 58″ flange undergoes meticulous machining and manufacturing processes, guaranteeing precise dimensions and perfect compatibility with pipes and fittings.
  3. Exceptional Durability: YANHAO’s flanges are designed to withstand extreme pressure and temperature variations, making them ideal for critical applications where reliability is paramount.
  4. Corrosion Resistance: Our flanges are engineered with corrosion-resistant coatings or materials, ensuring they remain unaffected by corrosive substances, chemicals, or moisture over their service life.
  5. Sealing Perfection: With options for raised face, flat face, or RTJ facings, our flanges offer exceptional sealing capabilities, preventing leaks and ensuring a tight, secure connection.
  6. Wide Range of Standards: YANHAO offers 58″ pipe flanges that adhere to various international standards, giving customers flexibility and compatibility with diverse piping systems.
  7. Customization Possibilities: We provide tailored solutions, allowing customers to customize their flanges with special facings, materials, or drilling patterns to meet specific project requirements.
  8. Stringent Quality Control: Our flanges undergo rigorous quality control processes, including non-destructive testing (NDT) and thorough inspections, to meet or exceed industry standards.
  9. Reliable Performance: YANHAO’s 58″ pipe flange consistently delivers reliable performance, reducing downtime and maintenance costs in various industrial settings.
  10. Longevity and Cost Efficiency: The combination of durability, corrosion resistance, and precise engineering results in a product that boasts a long service life, ultimately reducing the total cost of ownership.
  11. Expert Technical Support: YANHAO provides expert technical support, assisting customers in selecting the right flange for their unique applications and ensuring trouble-free installation.
  12. Environmental Responsibility: We are committed to environmental responsibility and offer options for eco-friendly coatings and materials, aligning with sustainable practices.

Manufacturing Process

1. Material Selection:

  • Our process begins with the careful selection of premium materials, including corrosion-resistant stainless steel, durable carbon steel, or robust alloy steel, based on the specific requirements of the project.

2. Precision Machining:

  • YANHAO employs state-of-the-art machining techniques to shape the raw materials into flanges with precise dimensions and smooth surfaces. CNC (Computer Numerical Control) machinery ensures consistency and accuracy.

3. Heat Treatment:

  • Depending on the material and application, our flanges may undergo heat treatment processes like annealing, quenching, or tempering to enhance their mechanical properties, such as strength and toughness.

4. Flange Formation:

  • Flanges are formed using specialized equipment, including hydraulic presses and forging machines. This process ensures the creation of uniform, robust flanges that can withstand high pressures.

5. Drilling and Threading:

  • Bolt holes are drilled and threaded with precision to match industry standards or custom requirements. This step guarantees proper alignment and secure attachment to pipes and equipment.

6. Facing and Surface Treatment:

  • YANHAO offers various facings, such as raised face, flat face, or ring-type joint (RTJ), tailored to the project’s sealing needs. Surface treatments, including anti-corrosion coatings or plating, are applied to enhance durability.

Quality Control Measures:

1. Non-Destructive Testing (NDT):

  • YANHAO employs advanced NDT methods, including ultrasonic testing, radiographic inspection, and dye penetrant testing, to detect any hidden defects or flaws in the flanges.

2. Dimensional Inspections:

  • Our quality control team meticulously checks each flange’s dimensions, ensuring they adhere to industry standards and customer specifications.

3. Material Analysis:

  • Material composition and quality are verified through material analysis techniques, confirming compliance with required standards.

4. Pressure and Leak Testing:

  • Flanges are subjected to rigorous pressure and leak tests to ensure they can withstand their rated pressure and maintain a leak-free connection.

5. Traceability and Documentation:

  • YANHAO maintains detailed records of each flange’s manufacturing process, including material certificates and inspection reports, ensuring full traceability and transparency.

Adherence to Industry Standards:

YANHAO is committed to adhering to the highest industry standards, including ANSI/ASME, DIN, and JIS, throughout the manufacturing process. Our dedication to quality, precision, and safety is evident in every step of production. Our flanges not only meet but often exceed industry requirements, ensuring they perform reliably in demanding applications.

Why Choose YANHAO for Your 58″ Pipe Flange Needs?

At YANHAO, we understand that selecting the right supplier for your 58″ pipe flange is a critical decision. Here are compelling reasons to choose YANHAO as your trusted partner:

1. Unmatched Expertise:

  • YANHAO boasts decades of experience in manufacturing high-quality pipe flanges. Our team of experts possesses deep industry knowledge, ensuring you receive the best solutions for your specific needs.

2. Superior Product Quality:

  • Our commitment to precision engineering and advanced manufacturing processes results in flanges of exceptional quality. You can rely on YANHAO flanges for reliable and long-lasting performance.

3. Comprehensive Standards Compliance:

  • YANHAO’s flanges adhere to a wide range of international standards, including ANSI/ASME, DIN, and JIS. This guarantees compatibility with diverse piping systems and industries.

4. Customization Options:

  • We offer tailored solutions to meet your project’s unique requirements. Whether you need special facings, materials, or drilling patterns, YANHAO can accommodate your customization needs.

5. Rigorous Quality Control:

  • Our flanges undergo rigorous quality control measures, including non-destructive testing (NDT) and dimensional inspections, ensuring each product meets or exceeds industry standards.

6. Commitment to Safety:

  • Safety is paramount. YANHAO’s flanges are designed and manufactured to withstand extreme conditions, reducing the risk of leaks and failures in critical applications.

7. Environmental Responsibility:

  • YANHAO is dedicated to environmental responsibility. We offer eco-friendly coatings and materials to align with sustainable practices and reduce the environmental impact of our products.

8. Global Reach:

  • YANHAO serves customers worldwide, providing dependable solutions for projects on a global scale. Our extensive network ensures timely delivery and support wherever your project is located.

9. Technical Support and Guidance:

  • Our team of technical experts is readily available to provide guidance, answer inquiries, and assist with product selection. We ensure that you have the right flange for your application.

10. Transparent Documentation:

  • YANHAO maintains detailed records of each product’s manufacturing process, providing full traceability and transparency. You can trust the quality and integrity of our products.

11. Competitive Pricing:

  • We offer competitive pricing without compromising on quality. YANHAO’s flanges provide excellent value, reducing your total cost of ownership.

12. Customer Satisfaction:

  • Our ultimate goal is your satisfaction. YANHAO is dedicated to building long-lasting partnerships with our customers by consistently delivering reliable products and outstanding service.

Choose YANHAO for your 58″ pipe flange needs, and experience the assurance of working with an industry leader known for excellence, expertise, and a commitment to quality. Contact us today to discuss your requirements and discover how YANHAO can support your projects.


Here are some common questions that customers may have about YANHAO’s 58″ pipe flanges, along with brief answers:

1. What is the maximum pressure rating for YANHAO’s 58″ pipe flange?

  • The maximum pressure rating of our 58″ pipe flange depends on the specific product and its materials. We offer a range of pressure classes to meet your project’s requirements.

2. Can YANHAO provide custom flanges with special facings or materials?

  • Yes, YANHAO offers customization options, including special facings, materials, and drilling patterns, to tailor flanges to your unique project needs.

3. How do I know which flange facing type is suitable for my application?

  • Our technical experts can help you determine the appropriate facing type (e.g., raised face, flat face, or RTJ) based on your application’s sealing requirements and industry standards.

4. What quality control measures are in place to ensure the reliability of YANHAO’s flanges?

  • YANHAO employs rigorous quality control measures, including non-destructive testing (NDT) and dimensional inspections, to ensure our flanges meet or exceed industry standards.

5. Are YANHAO’s 58″ pipe flanges environmentally friendly?

  • Yes, YANHAO is committed to environmental responsibility. We offer eco-friendly coatings and materials to align with sustainable practices.

6. Can I get technical support for selecting the right flange for my project?

  • Absolutely! Our team of technical experts is available to provide guidance, answer inquiries, and assist with product selection to ensure you have the right flange for your application.

7. How quickly can I expect delivery of YANHAO’s flanges?

  • Delivery times may vary depending on your location and product specifications. Contact our sales team for specific delivery estimates.

8. Does YANHAO offer global shipping and support?

  • Yes, YANHAO serves customers worldwide and has an extensive network to ensure timely delivery and support for projects anywhere in the world.

9. What industry standards do YANHAO’s flanges comply with?

  • YANHAO’s flanges comply with a wide range of international standards, including ANSI/ASME, DIN, and JIS, ensuring compatibility with various piping systems and industries.

10. How does YANHAO ensure the safety of its flanges in critical applications?
– YANHAO’s flanges are designed and manufactured to withstand extreme conditions, reducing the risk of leaks and failures in critical applications. We prioritize safety and reliability.

These frequently asked questions and answers aim to provide customers with valuable information about YANHAO’s 58″ pipe flanges and the support and services we offer. If customers have more specific or detailed inquiries, our customer service team is always available to assist.

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.

Similar Posts