Welcome to YANHAO Company, your premier source for 30″ pipe flanges. With a commitment to quality and expertise in the field, we provide a comprehensive range of pipe flange solutions that meet the highest industry standards. Our dedication to excellence, technical prowess, and track record of trustworthiness make us your top choice for all your piping needs. Explore our product offerings, technical specifications, and customer testimonials to discover why YANHAO is the name synonymous with reliability and professionalism in the industry.

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Understanding 30″ Pipe Flanges

A. Dimensions

Our 30″ pipe flanges are manufactured with precise dimensions to ensure a proper fit and reliable performance in your piping system. Key dimension specifications include:

  • Outer Diameter (OD): 30 inches(standard size)
  • Inner Diameter (ID): Designed to match the inner diameter of compatible pipes, typically slightly larger than the pipe’s inner diameter to ensure a proper fit.
  • Flange Thickness: Customizable based on material and pressure requirements, generally ranging from 1/2 inch to 3 inches or more.
  • Bolt Hole Diameter: Compliant with industry standards for secure bolt placement, typically matching the size of the bolts being used (e.g., 7/8 inch, 1 inch, etc.).
  • Flange Face-to-Face (F2F) Length: Depending on flange type and standard, the F2F length can vary. Common standards like ANSI/ASME B16.5 may have specific F2F dimensions for each flange size and class.

B. Material Specifications

We offer a variety of materials to meet the diverse needs of industrial applications. Our material specifications adhere to industry standards, ensuring durability and performance. Material options include:

  • Carbon Steel: ASTM A105/A105N
  • Stainless Steel: ASTM A182 F304/F304L, F316/F316L, and more.
  • Alloy Steel: ASTM A182 F5, F9, F11, F22
  • Duplex and Super Duplex Stainless Steel: ASTM A182 F51, F53, F55
  • Nickel Alloys: Inconel, Monel, Hastelloy, and more.

C. Pressure and Temperature Ratings

Understanding the pressure and temperature capabilities of our 30″ pipe flanges is crucial for safe and efficient operation. Our flanges are designed to meet various pressure and temperature standards, including:

  • Pressure Ratings: ANSI/ASME B16.5 Class 150, 300, 600, 900, 1500, and 2500; API pressure ratings for specific applications.
  • Temperature Range: Suitable for a wide range of temperatures based on material selection and application requirements.

D. Flange Face Types

Flange face type is an essential consideration for ensuring proper sealing and alignment. YANHAO offers various flange face types, including:

  • Raised Face (RF): Provides a raised surface to accommodate gaskets and improve sealing.
  • Flat Face (FF): Offers a flat, smooth surface for gasket sealing.
  • Ring Joint Face (RJF): Designed for high-pressure and high-temperature applications using ring joint gaskets.

E. Bolt and Gasket Requirements

Proper bolting and gasket selection are critical for achieving a leak-free connection. YANHAO provides guidelines and recommendations for:

  • Bolt Specifications: Including size, type, and torque values.
  • Gasket Materials: Offering guidance on selecting gaskets based on material compatibility and application conditions.

These technical specifications ensure that you have all the necessary information to make informed decisions when choosing and installing our 30″ pipe flanges. At YANHAO (盐浩), we prioritize precision, quality, and safety to meet the demands of your most critical industrial applications.

Key Features and Benefits

A. High-Quality Materials

Our commitment to using high-quality materials ensures that our 30″ pipe flanges provide exceptional reliability and longevity. The key benefits of our choice of materials include:

  • Longevity: Our materials are selected for their ability to withstand harsh environmental conditions and resist wear and tear over time.
  • Reduced Maintenance: High-quality materials result in reduced maintenance requirements, saving you time and money in the long run.
  • Safety: Quality materials contribute to the safety and integrity of your piping systems, minimizing the risk of leaks and failures.

B. Precision Engineering

Precision engineering is at the heart of our manufacturing process, delivering flanges that meet the most demanding tolerances and standards. The advantages of precision engineering include:

  • Exact Fit: Our flanges are precisely machined to ensure a perfect fit, reducing the risk of misalignment or leaks.
  • Smooth Surfaces: Precision machining results in smooth flange surfaces, facilitating effective gasket sealing.
  • Enhanced Performance: Flanges manufactured with precision engineering provide reliable and consistent performance in a wide range of applications.

C. Exceptional Durability

Durability is a hallmark of YANHAO (盐浩) 30″ pipe flanges, making them a reliable choice for your industrial needs. The benefits of exceptional durability include:

  • Long Service Life: Our flanges are designed to last, reducing the need for frequent replacements.
  • Resistance to Wear: Exceptional durability ensures that our flanges can withstand abrasion, pressure, and temperature fluctuations.
  • Cost Savings: Fewer replacements and maintenance requirements translate into cost savings for your projects.

D. Corrosion Resistance

Corrosion can be a major concern in industrial environments. Our flanges are engineered to provide superior corrosion resistance, offering several advantages:

  • Protection in Harsh Environments: Our materials and coatings are chosen to withstand corrosive substances and environments.
  • Extended Lifespan: Corrosion-resistant flanges have a longer lifespan, minimizing the need for premature replacements.
  • Reliable Performance: Corrosion resistance ensures that our flanges maintain their structural integrity, even in challenging conditions.

E. Pressure Integrity

Maintaining pressure integrity is crucial in piping systems. YANHAO (盐浩) 30″ pipe flanges are designed to uphold pressure integrity, offering the following benefits:

  • Leak Prevention: Flanges with strong pressure integrity minimize the risk of leaks and ensure the efficient transport of fluids or gases.
  • Safety Assurance: Pressure integrity ensures the safety of your systems and personnel, reducing the risk of accidents or downtime.
  • Optimal Performance: Flanges that maintain pressure integrity consistently deliver the performance required for critical industrial processes.

When you choose YANHAO (盐浩) 30″ pipe flanges, you gain access to a range of features and benefits that underscore our commitment to quality, performance, and reliability. Whether your project demands high-quality materials, precision engineering, exceptional durability, corrosion resistance, or pressure integrity, our flanges are engineered to meet your most stringent requirements.

Compliance with Industry Standards

YANHAO (盐浩) is committed to producing 30″ pipe flanges that adhere to the highest industry standards and specifications. Our dedication to compliance ensures that our products meet stringent quality, safety, and performance requirements across various sectors. Here are some of the key industry standards to which our flanges adhere:

A. ASME B16.5 (American Society of Mechanical Engineers)

ASME B16.5 is a widely recognized standard for pipe flanges and flanged fittings in the United States and many other countries. Our 30″ pipe flanges comply with ASME B16.5 standards, ensuring that they meet rigorous criteria for dimensions, materials, pressure ratings, and testing procedures. ASME B16.5 ensures the interchangeability and reliability of flange connections in diverse industrial applications.

B. API 6A (American Petroleum Institute)

API 6A standards are specifically relevant to the oil and gas industry, particularly for wellhead and Christmas tree equipment. YANHAO’s 30″ pipe flanges can adhere to API 6A specifications when required for applications in this sector. Compliance with API 6A standards guarantees that our flanges can withstand the extreme pressures, temperatures, and corrosive environments encountered in oil and gas exploration and production.

C. ISO 9001:2015 (International Organization for Standardization)

ISO 9001:2015 is a globally recognized standard for quality management systems. YANHAO is proud to maintain an ISO 9001:2015 certified quality management system, demonstrating our commitment to quality assurance and continuous improvement. Our adherence to ISO 9001:2015 standards ensures that our manufacturing processes, quality control, and customer service consistently meet the highest international quality benchmarks.

D. Other Relevant Standards

In addition to ASME B16.5, API 6A, and ISO 9001:2015, YANHAO (盐浩) recognizes the importance of meeting specific industry standards that may be relevant to unique applications. We are adaptable and can accommodate other relevant standards or regulations as required by our customers. This flexibility allows us to provide customized solutions for various industries, including but not limited to ASTM, ANSI, DIN, JIS, and EN standards, depending on your project’s specifications.

Our commitment to compliance with these industry standards ensures that our 30″ pipe flanges are engineered and manufactured to the highest quality and safety standards, making them suitable for use in diverse and demanding industrial applications. When you choose YANHAO, you can trust that our products will consistently meet or exceed industry-specific requirements.

Applications of 30″ Pipe Flanges

1. Oil and Gas Industry

  • Offshore Platforms: 30″ pipe flanges are used in offshore drilling platforms and subsea installations, where they must withstand high pressures and corrosive seawater.
  • Pipeline Transport: These flanges are crucial for connecting large-diameter pipelines that transport crude oil, natural gas, and refined products over long distances.
  • Refineries: In refineries, flanges play a vital role in connecting process equipment, pipes, and vessels, ensuring the safe and efficient processing of petroleum products.

2. Petrochemical and Chemical Industries

  • Chemical Processing: Flanges are used to connect pipes and equipment in chemical manufacturing plants, where resistance to corrosive chemicals is paramount.
  • Pharmaceuticals: In pharmaceutical manufacturing, 30″ pipe flanges are employed for conveying various process fluids and maintaining sterility.

3. Power Generation

  • Power Plants: Flanges are essential components in power generation facilities, connecting pipes in steam, gas, and water systems, as well as supporting the transfer of coolants and other fluids.

4. Water Treatment and Desalination

  • Water Treatment Plants: Flanges are used in water treatment facilities to connect pipes and equipment for the treatment of potable water and wastewater.
  • Desalination Plants: Flanges play a role in desalination processes, connecting pipes and facilitating the transfer of seawater or brine.

5. Shipbuilding and Maritime

  • Ship Construction: 30″ pipe flanges are utilized in shipbuilding for plumbing, HVAC systems, and other critical shipboard applications.
  • Offshore Platforms: Flanges are integral components for connecting piping systems on oil rigs, drilling platforms, and vessels.

6. Mining and Mineral Processing

  • Mining Operations: Flanges are used in mining operations for conveying slurry, water, and other materials through pipelines.
  • Mineral Processing Plants: Flanges facilitate the transport of minerals, ores, and chemicals in mineral processing facilities.

7. Food and Beverage Industry

  • Food Processing: Flanges are employed in food processing plants for conveying various food products and maintaining hygienic conditions.
  • Breweries: In breweries, flanges are used for connecting piping systems involved in brewing and beverage production.

8. Construction and Infrastructure

  • Large Infrastructure Projects: Flanges are used in the construction of bridges, tunnels, and other infrastructure projects to connect large-diameter pipes.
  • Water and Sewage Systems: Municipal water supply and sewage systems rely on flanges to connect pipes and ensure efficient fluid transport.

9. Aerospace and Defense

  • Aerospace Industry: Flanges are utilized in aerospace applications, such as rocket engine components and aircraft fuel systems.
  • Military Equipment: Military vehicles and equipment often employ flanges for hydraulic and fuel systems.

10. Renewable Energy

  • Wind Turbines: Flanges are used in wind turbine towers and connections for hydraulic and cooling systems.
  • Solar Power: In solar thermal power plants, flanges are used for piping systems in heat transfer and energy storage.

Manufacturing Process

At YANHAO, our commitment to quality begins with our meticulous manufacturing process, ensuring that each 30″ pipe flange we produce meets the highest industry standards. We take great pride in the precision and care with which we create our products.

1. Quality Control

Quality is the cornerstone of our manufacturing process. Our quality control procedures are rigorous and thorough to guarantee that our pipe flanges consistently meet or exceed your expectations. Key aspects of our quality control process include:

  • Material Inspection: We start by carefully inspecting the raw materials, verifying their compliance with industry standards and specifications.
  • Precision Machining: Our state-of-the-art machining processes are closely monitored to ensure accurate dimensions, smooth finishes, and proper alignment.
  • Non-Destructive Testing (NDT): We employ various NDT techniques such as ultrasonic testing, radiographic testing, and magnetic particle testing to detect any potential defects.
  • Material Certifications: We provide material certifications with each product, offering transparency and assurance of material quality.
  • Third-Party Inspections: In addition to our internal quality control measures, we often engage third-party inspection agencies to conduct independent assessments, providing an extra layer of confidence in our products.

2. Compliance with Standards

Our manufacturing process adheres strictly to industry and international standards to guarantee the reliability and safety of our 30″ pipe flanges. We ensure compliance with:

  • ASME B16.5: Our flanges meet the stringent requirements outlined in the ASME B16.5 standard, which covers dimensions, materials, and testing.
  • API Standards: For applications in the oil and gas industry, we adhere to API standards to ensure our products can withstand the demanding conditions of the field.
  • ISO 9001:2015: We maintain an ISO 9001:2015 certified quality management system, underscoring our commitment to quality and customer satisfaction.
  • Customer-Specific Standards: If your project requires adherence to specific standards or regulations, we can tailor our manufacturing process to meet those requirements.

Customization Options

Recognizing that every project is unique, YANHAO offers a range of customization options to ensure that our 30″ pipe flanges are a perfect fit for your specific application. Our customization options include:

  • Material Selection: Choose from a variety of materials to match the corrosion resistance, temperature tolerance, and other requirements of your project.
  • Flange Face Type: Select the appropriate flange face type, whether it’s raised face (RF), flat face (FF), or ring joint face (RJF), based on your sealing and pressure needs.
  • Pressure Ratings: Tailor the pressure rating of your flanges to match the demands of your system.
  • Flange Dimensions: Customize the flange dimensions, including outer diameter, inner diameter, and thickness, to suit your piping requirements.
  • Coating and Finishing: Opt for coatings or finishes such as galvanization or painting for added protection and longevity.

Our dedication to quality, adherence to standards, and flexibility in customization options make YANHAO (盐浩) the trusted choice for your 30″ pipe flange needs. Whether you require standard configurations or specialized solutions, we are committed to delivering the highest-quality products to meet your unique project specifications.

Quality Assurance and Testing

YANHAO (盐浩) places the highest priority on quality assurance to guarantee the performance and reliability of our 30″ pipe flanges. Our comprehensive quality control measures include non-destructive testing, material certifications, and third-party inspections to ensure that our products consistently meet or exceed industry standards and customer expectations.

A. Non-Destructive Testing

  1. Ultrasonic Testing (UT): Ultrasonic testing is used to detect internal flaws, such as cracks, voids, and inclusions, in the material of our 30″ pipe flanges. High-frequency sound waves are transmitted through the material, and the reflected waves are analyzed for any indications of defects.
  2. Radiographic Testing (RT): Radiographic testing involves using X-rays or gamma rays to inspect the internal structure of flange materials. This method is particularly effective in identifying defects that may not be visible on the surface.
  3. Magnetic Particle Testing (MT): Magnetic particle testing is used to detect surface and near-surface defects. Magnetic particles are applied to the surface of the flange, and the presence of defects causes the particles to accumulate, making them visible for inspection.
  4. Liquid Penetrant Testing (PT): Liquid penetrant testing is used to detect surface cracks, porosity, and other discontinuities. A penetrating liquid is applied to the surface, and after a specified dwell time, excess liquid is removed. A developer is then applied to make any defects visible.

Non-destructive testing ensures that our 30″ pipe flanges are free from defects and meet the highest quality standards. It is a critical step in our quality control process.

B. Material Certifications

We provide material certifications with each of our 30″ pipe flanges, offering transparency and assurance regarding the quality and properties of the materials used. Material certifications typically include information such as chemical composition, mechanical properties, heat treatment details, and compliance with relevant material standards (e.g., ASTM, ASME, API).

These certifications not only confirm that our flanges are made from high-quality materials but also allow customers to verify compliance with specific project requirements and industry standards.

C. Third-Party Inspections

In addition to our rigorous in-house quality control measures, YANHAO (盐浩) often engages independent third-party inspection agencies to conduct comprehensive inspections and evaluations of our 30″ pipe flanges. Third-party inspections provide an extra layer of confidence in the quality, safety, and compliance of our products.

These inspections are conducted by certified inspectors who assess our manufacturing processes, materials, and final products to ensure they meet or exceed industry standards and project specifications. The involvement of third-party inspectors adds an impartial perspective to the quality assurance process, further enhancing the trustworthiness of our products.

YANHAO’s commitment to quality assurance and testing ensures that our 30″ pipe flanges are of the highest caliber, making them the reliable choice for critical industrial applications across various sectors. Our dedication to quality and safety is reflected in every step of our manufacturing and inspection processes.

Pricing and Competitive Advantage

A. Competitive Pricing

  1. Cost Efficiency: Through efficient manufacturing processes, precise engineering, and optimized supply chains, we can offer competitive pricing without compromising quality. Our commitment to cost efficiency allows us to provide cost-effective 30″ pipe flanges to our customers.
  2. Bulk Orders: We accommodate bulk orders, which often come with volume discounts. This approach allows us to pass on cost savings to our customers when they need multiple flanges for their projects.
  3. Transparent Pricing: Our pricing is transparent and devoid of hidden fees or unexpected costs. We believe in open communication and providing customers with a clear understanding of the costs involved.
  4. Customization Flexibility: While offering competitive prices, we also provide flexibility in customization. Customers can tailor their orders to their specific project needs, optimizing costs accordingly.

B. Value Proposition

  1. High-Quality Products: Our 30″ pipe flanges are engineered with precision and crafted from high-quality materials. This commitment to quality ensures that our products offer exceptional durability and performance, reducing the need for frequent replacements and maintenance.
  2. Reliability and Safety: YANHAO (盐浩) places safety and reliability at the core of our value proposition. Our flanges are designed to meet or exceed industry standards and undergo rigorous testing to ensure they can withstand demanding conditions safely.
  3. Customization: We recognize that each project has unique requirements. Our customization options allow customers to tailor their flanges to specific dimensions, materials, and other specifications, ensuring a perfect fit for their applications.
  4. Compliance and Certifications: Our flanges adhere to industry standards, and we provide material certifications and third-party inspections as needed. This commitment to compliance and transparency offers peace of mind to our customers.
  5. Technical Expertise: With years of experience and technical expertise, our team can provide valuable guidance and support throughout the selection and installation process. We understand the intricacies of piping systems and can assist customers in making informed decisions.
  6. Responsive Customer Support: Our customer support team is readily available to address inquiries, provide quotes, and assist with any technical or logistical concerns. We aim to deliver a seamless and hassle-free experience.
  7. On-Time Delivery: We understand the importance of meeting project deadlines. Our efficient logistics and supply chain management ensure that orders are delivered on time, minimizing project delays.

YANHAO’s value proposition is built on a foundation of quality, reliability, flexibility, and customer-centricity. We are dedicated to offering competitive pricing while delivering 30″ pipe flanges that excel in performance and longevity, ultimately providing our customers with the best possible value for their investments.

Ordering and Customer Support

A. How to Order

Ordering our 30″ pipe flanges is a straightforward process designed to provide convenience and clarity:

  1. Contact Us: Reach out to our customer support team through our website, email, or phone to initiate your order.
  2. Product Consultation: Our experienced team can provide guidance on selecting the right flanges based on your project’s specifications, including material, dimensions, and pressure ratings.
  3. Request a Quote: Request a customized quote that outlines pricing, lead times, and any applicable discounts for bulk orders.
  4. Order Confirmation: Review the quote, and once you are satisfied, confirm your order with our team. Ensure that all specifications are accurately documented.
  5. Payment: Make payment according to the agreed-upon terms. We accept various payment methods for your convenience.
  6. Production and Fulfillment: Once payment is confirmed, our manufacturing process begins, and we work diligently to fulfill your order to the highest quality standards.
  7. Shipping and Tracking: We provide shipping and tracking information so you can monitor the progress of your order as it makes its way to your location.
  8. Delivery: Expect your 30″ pipe flanges to be delivered securely and on time, meeting your project’s schedule.

B. Technical Assistance

Our team of experts is available to provide technical assistance throughout the ordering process and beyond:

  • Product Selection: We can help you choose the most suitable 30″ pipe flanges based on your project’s requirements, including materials, pressure ratings, and dimensions.
  • Customization: If you require customized flanges, we can assist in defining the specifications and ensuring they meet industry standards.
  • Installation Support: We can offer guidance on proper installation techniques and best practices to ensure the longevity and performance of your flanges.
  • Technical Questions: If you have any technical inquiries or concerns, our team is ready to provide answers and solutions.

C. Shipping and Delivery

YANHAO (盐浩) places a strong emphasis on timely and secure shipping and delivery:

  • Packaging: Our 30″ pipe flanges are carefully packaged to prevent damage during transit, including protection against corrosion for long-distance shipping.
  • Shipping Options: We offer a range of shipping options to accommodate your project’s timeline and budget, from standard shipping to expedited delivery.
  • Tracking: Once your order is dispatched, we provide tracking information so you can monitor its progress and estimated delivery date.
  • Delivery Confirmation: Upon delivery, please inspect your order to ensure it matches your specifications and is free from any shipping-related issues. If you encounter any concerns, our customer support team is here to assist.

At YANHAO (盐浩), we are committed to delivering a seamless and customer-focused experience. From the moment you inquire about our 30″ pipe flanges to the successful delivery of your order, our goal is to provide exceptional service and support, ensuring your project’s success.

Frequently Asked Questions

At YANHAO (盐浩), we understand the importance of addressing common inquiries, providing troubleshooting guidance, and offering maintenance tips to assist our customers in getting the most out of their 30″ pipe flanges. Here are some frequently asked questions along with helpful answers:

A. Common Inquiries

  1. What are the standard materials available for 30″ pipe flanges?
    • We offer a variety of materials, including carbon steel, stainless steel, alloy steel, duplex and super duplex stainless steel, and nickel alloys. The choice depends on your project’s requirements for factors like corrosion resistance, temperature, and pressure.
  2. What pressure ratings are available for your 30″ pipe flanges?
    • Our flanges are available in various pressure ratings, including ANSI/ASME B16.5 Class 150, 300, 600, 900, 1500, and 2500. We can also provide flanges to meet specific API pressure ratings for specialized applications.
  3. Can I customize the dimensions of 30″ pipe flanges?
    • Yes, we offer customization options for dimensions, including outer diameter, inner diameter, and flange thickness. Contact our team to discuss your specific requirements.
  4. What is the difference between raised face (RF) and flat face (FF) flanges?
    • Raised face flanges have a raised surface to accommodate gaskets, enhancing sealing performance. Flat face flanges have a smooth, flat surface for gasket sealing. The choice depends on your sealing and pressure requirements.

B. Troubleshooting Guide

  1. Leakage: If you experience flange leakage, ensure that the gasket is correctly installed and tightened to the specified torque. Check for any visible damage to the gasket or flange faces and replace them if necessary.
  2. Bolt Loosening: If bolts are loosening over time, re-tighten them to the recommended torque. Consider using bolt locking devices or thread-locking compounds to prevent loosening.
  3. Corrosion: If you notice corrosion on the flange, assess the compatibility of the flange material with the transported fluid. Consider using corrosion-resistant coatings or selecting a more suitable material for future applications.

C. Maintenance Tips

  1. Regular Inspection: Periodically inspect your 30″ pipe flanges for signs of wear, damage, or corrosion. Address any issues promptly to prevent leaks or failures.
  2. Gasket Replacement: Replace gaskets during maintenance to ensure a reliable seal. Use gaskets compatible with your application’s temperature and chemical requirements.
  3. Bolt Torque: Check and re-torque bolted connections as needed to maintain proper pressure integrity. Follow the recommended torque values for your specific flange type and size.
  4. Corrosion Prevention: If operating in a corrosive environment, consider using corrosion-resistant materials, coatings, or cathodic protection methods to extend the lifespan of your flanges.
  5. Training: Ensure that personnel involved in installation and maintenance are trained in proper procedures and safety measures to minimize operational risks.

Our goal is to provide comprehensive support to help you make informed decisions, troubleshoot issues effectively, and maintain the long-term integrity of your 30″ pipe flanges. If you have any specific questions or require further assistance, please don’t hesitate to reach out to our customer support team.

Customer Support Email: flanges.yh@gmail.com

Customer Support Phone: +86 13313073735(same as WeChat)

Business Hours: Our customer support team is available during regular business hours, Monday through Friday, from 9:00 AM to 5:00 PM (local time). We are closed on weekends and major holidays.


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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