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How will China’s flange exports be in 2023?

What is a flange?

Flanges are components that use bolts and gaskets to connect pipes in a piping system and are widely used in petroleum, chemical, water treatment, pharmaceutical, food, and other industries. The flange industry has also developed rapidly with the continuous acceleration of industrialization.

Types of Flanges

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Flanges come in various types, each designed for specific applications and requirements. Here are some common types of flanges:

Welding Neck Flange (WN):

Weld neck flanges are designed for high-pressure and high-temperature applications.

They have a long neck (tapered hub) that provides reinforcement and better support for the pipe.
They are welded to the pipe, providing a strong and leak-resistant connection.

Slip-On Flange (SO):

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Slip-on flanges are easy to install and suitable for low-pressure applications.
They have a slightly larger diameter than the pipe, allowing the pipe to slip into the flange before being welded.
They are less strong than weld neck flanges but are cost-effective.

Socket Weld Flange (SW):

Socket weld flanges are used for small-bore, high-pressure piping systems.
They have a socket or opening where the pipe is inserted and welded for a strong, leak-resistant connection.
They are ideal for applications with limited space.

Threaded Flange (TH):

Threaded flanges have threads on the inside surface that can be screwed onto threaded pipes or fittings.
They are used for low-pressure applications and are easy to assemble and disassemble.

Blind Flange (BL):

Blind flanges seal the end of a piping system or vessel.
They do not have a bore or an opening in the center and are used to block off a pipe or nozzle.
They are often used for pressure testing or to prevent the entry of foreign materials into a pipeline.

Lap Joint Flange (LJ):

Lap joint flanges are used with stub ends to facilitate quick and easy alignment during assembly.
They are often used in systems requiring frequent disassembly, such as water treatment plants.
Threaded Lap Joint Flange:
These flanges combine the features of threaded and lap joint flanges, allowing for easy assembly and disassembly.
Orifice Flange:
Orifice flanges are specifically designed to measure fluid flow using an orifice plate.
They have a small bore orifice hole commonly used in flow metering applications.
Spectacle Blind Flange:
Spectacle blind flanges are used in pipelines where the flow needs to be blocked temporarily.
They consist of two metal discs with a gap in between that can be rotated to open or close the flow.
Expander Flange:
Expander flanges are used in applications where the pipe size needs to be increased gradually.
They have a larger inside diameter than the pipe and are welded to the smaller pipe end, allowing for a smooth transition.
Special Flanges:
Special flanges, such as long neck butt welding flanges, are designed to meet specific application requirements.
High-yield flanges are used in applications where high strength is essential.
These are the most common flanges used in various industries and applications. The choice of flange type depends on factors such as pressure, temperature, pipe size, material compatibility, and specific project requirements.

Materials of Flanges

Carbon steel and stainless steel are commonly used for flanges due to their durability and corrosion resistance.
Nickel alloys may also be used for specific applications requiring corrosion resistance and high-temperature performance.

Standardss of Flanges

ANSI B16.5/ASME B16.5 is a widely recognized standard for flanges, specifying dimensions, pressure ratings, and materials for various flange types.

Pressure Ratings of Flanges

Flanges are available in pressure ratings, typically ranging from 150 to 2500 pounds (150# to 2500#), indicating the flange’s ability to handle different pressure levels.

Piping Schedule

Some flanges, like butt-welding and socket welding, require specifying the piping schedule to ensure a proper fit with the pipe.

Flange Faces

Here’s a summary of the types of flange faces you mentioned:

  • Raised Face: Raised face flanges have a raised surface around the bore. The height of the lip on the back end varies depending on the pressure class, with 1/16″ for classes 150#, 300#, and 600#, and 1/4″ for higher pressure classes.
  • Flat Face: Flat face flanges have a flat, smooth surface without any raised features. They are commonly used in low-pressure applications and for cast iron flanges.
  • Lap Joint: Lap joint flanges have a flat face but include a groove in the bore, which mates with a stub end for easy alignment. They are often used in systems where frequent disassembly is required.
  • Ring Joint: Ring joint flanges have a grooved slot in which a metal ring gasket is inserted to create a reliable seal. These are suitable for high-pressure and corrosive applications, and the ring gasket is typically made of materials like 316 stainless steel.
  • Tongue and Groove: Tongue and groove flanges have a small contact area for the sealing element, providing good gasket compression even under low bolt loading. The groove slot functions like an O-ring groove and offers effective containment for the gasket. They are ideal for high-pressure applications.

The choice of flange face type is critical to ensure a proper seal and prevent leaks in a piping system. Factors such as pressure, temperature, and the nature of the fluid being transported will influence the selection of the appropriate flange face type and gasket material.
Yaang offers a wide range of flanges, including those made from carbon steel, stainless steel, and nickel alloys. They can also provide customized solutions for unique requirements, which is important in many industrial and commercial applications.

Manufacturing process of flanges

The manufacturing process of flanges typically involves several steps, which may vary depending on the type, size, and material of the flange being produced. Here is a general overview of the manufacturing process for flanges:
Material Selection:
The first step is to select the appropriate material for the flange. Common materials include carbon steel, stainless steel, alloy steel, and other specialized materials, depending on the application.
Cutting and Shaping:
The selected material is cut into the desired shape using plasma, laser, or water jet cutting. The shape of the flange will depend on its type (e.g., slip-on, weld neck, socket weld, threaded) and size.
Forging or Forming (Optional):
Flanges may sometimes be forged to achieve a specific shape and enhance their mechanical properties. Forging involves heating the material and then forming it into blank forgings using a die and hammer.
Heat Treatment (if required):
Heat treatment processes such as annealing, normalizing, quenching, and tempering may improve the material’s mechanical properties and reduce internal stresses.
Flanges are machined to achieve precise dimensions, smooth surfaces, and accurate sealing surfaces. CNC (Computer Numerical Control) machining centers are commonly used.
Drilling Holes:
Holes for bolting and fastening are drilled or tapped into the flange. The number and size of holes will depend on the flange type and its intended use.
Surface Finish:
The surface of the flange is often finished to meet specific requirements. This may involve grinding, polishing, or shot blasting to achieve the desired surface finish and remove imperfections.
Quality Control:
Flanges undergo rigorous quality control checks to meet industry standards and specifications. This includes dimensional inspections, material testing, and non-destructive testing methods like ultrasonic or radiographic testing.
Marking and Identification:

Each flange is typically marked with relevant information, such as size, material, pressure rating, and manufacturer’s markings for traceability.

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Final Inspection and Packaging:
Flanges are subjected to a final inspection to ensure they meet all quality and safety standards. Once approved, they are packaged and prepared for shipment.
It’s important to note that there are various types of flanges, such as slip-on, weld neck, socket weld, threaded, and blind flanges, each with its unique manufacturing considerations. Additionally, custom flanges may require specialized processes based on specific design requirements. Manufacturers must adhere to industry standards (e.g., ASME, ANSI, DIN) and customer specifications during the production of flanges to ensure their reliability and compatibility in various applications.

Use of flange

Flanges are widely used in various fields due to their compact structure and easy installation. The following are the main application scenarios of flanges:

  • 1). Petrochemical industry: flanges are widely used in the petrochemical industry, such as oil refining, chemical industry, natural gas, and other fields.
  • 2). Electric power industry: flanges are used in the electric power industry to connect transmission lines and substation equipment, such as transmission towers, cable wells, transformers, and so on.
  • 3). Construction industry: flanges are used in the construction industry to connect HVAC equipment and piping systems, such as air conditioning, heating, water supply, and drainage.
  • 4). Wastewater treatment industry: flanges are used in the wastewater treatment industry to connect wastewater treatment equipment and piping systems, such as wastewater treatment plants, pumping stations, etc.
  • 5). Food and beverage industry: flanges are used in the food and beverage industry to connect production equipment and piping systems, such as beer, juice, beverage, etc.
  • 6). Pharmaceutical industry: flanges are used in the pharmaceutical industry to connect production equipment and piping systems, such as pharmaceuticals, biologics, etc.

In short, flanges are widely used in various fields, and their application scope will continue to expand with the continuous progress of technology and market expansion.

Major exporting countries and regions of flanges

With the development of globalization, Chinese export enterprises have become one of the important participants in global trade. In this industry, many companies mainly focus on producing flanges. So, who are the main customer groups of these enterprises?

  • Firstly, the main customer group of flange is the construction and engineering industries. In construction and engineering projects, flanges are essential components as they are used to connect pipelines and systems. Therefore, construction and engineering enterprises are one of the main customers of flanges.
  • Secondly, the manufacturing industry is also one of the main customers of flanges. The manufacturing industry requires many pipelines and systems to transport raw materials and finished products. Therefore, manufacturing enterprises require many flanges to connect these pipelines and systems.

In addition, the chemical industry is also one of flange’s main customers. In the chemical industry, pipelines and systems need to withstand extreme environments such as high temperature, high pressure, and corrosion. Therefore, chemical enterprises need high-quality flanges to ensure the safety and reliability of pipelines and systems.
In summary, the main customer groups of flanges are the construction, engineering, manufacturing, and chemical industries. These customers require high-quality and reliable flanges to ensure their pipelines and systems’ safety and smooth operation. Therefore, Chinese export enterprises should focus on product quality and customer service to meet customer needs and expectations.
Which countries and regions are the main exports of flanges, and the analysis of the reasons?
Flange is an important part of the pipeline system, widely used in petroleum, chemical industry, shipbuilding, natural gas, nuclear power, and other fields. With the development of the global economy, the demand for flanges is constantly increasing, so the export market is becoming increasingly important.
At present, flanges are mainly exported to the following countries and regions:

  • 1) European countries: Europe is one of the important regions of the world economy, with developed industries and economic systems. Flange is widely used in Europe, including petroleum, chemical, shipbuilding, and other industries. Europe has a high demand for high-quality flanges, making it an important export market.
  • 2) North America: North America is one of the most economically developed regions in the world, with the world’s largest shipping and oil markets. The demand for flanges in these fields is high, making them an important export market.
  • 3) Southeast Asia: Southeast Asia is one of the most developed economies in the world, with abundant oil and natural gas resources. Flanges are widely used in these fields, making them an important export market.
  • 4) Middle East: The Middle East region has the world’s most abundant oil and natural gas resources, and flanges are also widely used in these fields. Therefore, the Middle East region is also one of the important export markets.

The export market of flanges is mainly concentrated in petroleum, chemicals, ships, natural gas, etc. These fields have a high demand for high-quality flanges, making them an important market for flange exports. With the global economy’s continuous development, the flange’s export market will continue to expand.

Development trend of the flange industry

At present, the market scale of the domestic flange industry has reached tens of billions of dollars, and the competition in the industry has become increasingly fierce.

In the future, the flange industry will face more severe challenges as the state’s requirements on environmental protection and safety are getting higher and higher. In this context, in 2023, flange export enterprises need to strengthen technological innovation, promote product upgrading, and improve product quality and safety. At the same time, they also need to focus on marketing and after-sales service to improve customer satisfaction and win more market share.

China stainless steel flanges were exported to Japan in the highest quantity, totaling 39,508,267 kilograms, and exported to Japan in the highest amount, totaling $208,427,902. According to the data published by Grande Select Markets, the HS of China’s stainless steel flange is 73072100, and in the past three years, it has been sold to 182 countries overseas, totaling 193,670,530 kilograms and US$1,159,910,000. In the past three years, the ten main countries to which stainless steel flanges (HS 73072100) were exported are as follows (in order of quantity):

  1. Japan: the total quantity of 39,508,267 kilograms; value of 208,427,902 U.S. dollars; total share of 20.40%.
  2. South Korea: the total quantity of 32,351,121 kilograms; value of US$166,175,113; total share of 16.70%.
  3. Germany: total quantity 17,385,924 kilograms; value US$117,249,395; total share 8.98%.
  4. Taiwan, China: 11,034,904 kilograms in total quantity and US$55,664,108 in value, accounting for 5.70% of the total.
  5. Italy: total quantity 6,842,282 kilograms; value US$38,181,892; total share 3.53%.
  6. Russian Federation: a total quantity of 6,724,077 kilograms, a value of US $40,085,972, and a total share of 3.47 percent.
  7. Australia: total quantity 6,311,999 kilograms; value US $39,838,204; total share 3.26 percent.
  8. Netherlands: total quantity 5,078,393 kilograms; value US$33,518,615; total share 2.62%.
  9. Malaysia: total quantity 4,941,247 kilograms; value US$27,353,583; total share 2.55%.
  10. Mexico: total quantity is 3,863,870 kilograms; the amount is 28,250,562 U.S. dollars; total proportion is 2.00%. 

The above China stainless steel flange export information is Yaang according to China’s customs import and export data from January 2020 to August 2023; the subsequent data and information may be subject to changes or adjustments. Foreign traders combined with the above information for reference must also be combined with the latest international market situation to make judgments.

China Flange Foreign Trade Manufacturers Directory

China is one of the largest flange producing countries in the world, with numerous excellent suppliers. The following are the main flange suppliers in China and their profiles:

  • 1) Wenzhou Guanxin Forging Co., Ltd.: Established in 1990, specializing in the production of various steel flanges, the products are best-selling in domestic and foreign markets.
  • 2) Shanghai Pipe Fitting Co., Ltd.: Established in 2002, it is a flange enterprise that integrates production, sales, and service.
  • 3) Tianjin Pipe Fitting Co., Ltd.: Established in 1999, it is a professional enterprise that produces flanges and exports its products to Europe, America, Southeast Asia, and other regions.
  • 4) Jiangsu Pipe Fitting Co., Ltd.: Established in 2008, it is a flange enterprise that integrates research and development, production, and sales.
  • 5) Zhejiang Yaang Pipe Fitting Co., Ltd.: Established in 2002, it is a professional enterprise that produces various flanges, and its products are best-selling in domestic and foreign markets.

The above are the main flange suppliers in China and their profiles. These enterprises have advanced production equipment, strict quality control systems, and professional teams, which can provide customers with high-quality and reliable products and services.
For annotation purposes.

The situation of flange export

With the development of globalization, more and more enterprises have begun to set their eyes on the international market, hoping to expand their business scale through export. So, is it good to export flanges? How is the foreign trade situation? Let’s discuss one by one.

  • First of all, the market demand for flange export is large. With the development of the global economy, the demand for petroleum, chemical, and other industries is increasing, which also drives the market demand for flanges. According to statistics, the global flange market has reached tens of billions of dollars, of which China is one of the largest producers and exporters. Therefore, from the view of market demand, there are certain opportunities for flange export.
  • Secondly, the competitive pressure of flange export is high. With the deepening of globalization, more and more enterprises begin to enter the international market, and the competition becomes more and more intense. In addition, some developing countries have begun vigorously developing flange production, increasing the competitive pressure on exports. Therefore, enterprises need to pay attention to competitiveness and quality when exporting flanges.
  • Finally, the current foreign trade situation could be more stable. With the uncertainty of the global economy and the rise of trade protectionism, the foreign trade situation is relatively unstable. In addition, epidemics have also had a great impact on global trade. Therefore, enterprises must pay attention to market changes when exporting flanges and adjust their strategies in time.

To summarize, there are certain opportunities for flange export, but at the same time, there is also certain competitive pressure and uncertainty. When exporting, enterprises need to pay attention to market demand, competitiveness, and quality and adjust their strategies to cope with market changes.

How do flange exporters look for expanding customers?

Like any other business, Flange exporters seek to expand their customer base through various strategies and approaches. Here are some steps and considerations for flange exporters looking to expand their customer base:
Market Research:
Conduct thorough market research to identify potential markets and segments that have a demand for your flange products. Consider factors like geographical locations, industries, and market trends.
Product Diversification:
Explore diversifying your product range to cater to different customer needs. This might involve offering various flange types, sizes, materials, or custom solutions.
Online Presence:
Establish a strong online presence by creating a user-friendly website that showcases your products, services, and capabilities. Optimize your website for search engines (SEO) to attract organic traffic.
Social Media and Digital Marketing:
Utilize social media platforms and digital marketing strategies to reach a wider audience. Consider running targeted advertising campaigns to attract potential customers.
Attend Trade Shows and Exhibitions:
Participate in relevant industry trade shows and exhibitions to showcase your products and network with potential customers. These events provide opportunities to meet buyers and distributors from various regions.
Build Relationships with Distributors:
Collaborate with distributors and agents in target markets who can help promote and sell your products locally. They often have established networks and market knowledge.
Quality Assurance and Certifications:
Ensure that your flange products meet industry standards and certifications, enhancing your credibility and making it easier to enter new markets.
Customer Support and After-Sales Service:
Provide excellent customer support and after-sales service to build trust and loyalty among your existing customers. Happy customers are more likely to refer your products to others.
Join industry associations and networks locally and internationally to connect with potential customers, suppliers, and partners. Attend networking events and conferences to build relationships.
Export Assistance Programs:
Investigate export assistance programs offered by government agencies and trade organizations. These programs can provide valuable resources and support for expanding into international markets.
Competitive Pricing:
Offer competitive pricing while maintaining product quality. Price sensitivity varies across markets, so adapt your pricing strategy accordingly.
Adapt to Local Preferences:
Be flexible and willing to adapt your products or services to meet target market local preferences, regulations, and standards.
Market Entry Strategies:
Consider various market entry strategies, such as joint ventures, strategic alliances, or franchising, depending on the specific market and industry dynamics.
Export Documentation and Logistics:
Ensure you have a robust export documentation and logistics process to facilitate smooth international shipments and minimize delays.
Feedback and Continuous Improvement:
Listen to customer feedback and continuously improve your products and services based on their needs and preferences.
Expanding into new markets can be a gradual process that requires patience and persistence. It is essential to have a well-defined strategy and be prepared to adapt as you learn more about each market and its unique challenges and opportunities.

How do buyers find suitable flange factories?

Buyers can find suitable flange factories through research, networking, and due diligence. Here are some steps to help buyers identify and evaluate potential flange manufacturers:
Online Research:

  • Search Engines: Start with a simple online search using keywords like “flange manufacturer” or “flange factory.” This will give you a list of potential manufacturers to consider.
  • Industry Directories: Check industry-specific directories and websites. These often list reputable manufacturers along with their contact information.
  • Trade Associations: Industry associations and trade groups often maintain directories of member companies, which can be a valuable resource.


  • Trade Shows and Exhibitions: Attend industry trade shows and exhibitions where flange manufacturers may exhibit their products. This is an excellent opportunity to meet manufacturers and discuss your requirements.
  • Industry Conferences: Attend conferences and seminars related to your industry. These events often attract key players in the manufacturing sector.
  • Business Networks: Use professional networks, both online and offline, to connect with individuals with industry experience. They may have valuable recommendations.

Supplier Databases:
Use online supplier databases and sourcing platforms like Alibaba, Global Sources, Thomasnet, and others to find a list of potential flange manufacturers. These platforms often provide information on supplier capabilities, certifications, and contact details.
Verify Credentials:

  • Check for certifications: Ensure the manufacturer has the necessary certifications, such as ISO 9001, ISO 14001, or industry-specific certifications demonstrating their commitment to quality and environmental standards.
  • Request references: Ask for references from past customers who have similar requirements. Contact these references to learn about their experiences with the manufacturer.

Visit the Factory:
If possible, visit the factory in person. This will give you a firsthand look at the manufacturing processes, quality control measures, and the overall capacity of the factory.
Request Samples and Quotes:
Request samples of the flanges you need to assess their quality. Also, ask for price quotes from multiple manufacturers to compare costs.
Evaluate Capacity and Lead Times:
Ensure the manufacturer meets your production requirements within your desired lead times.
Communication and Relationship Building:
Establish clear communication channels with potential suppliers. Effective communication is essential for a successful business relationship.
Negotiate Terms and Contracts:
Discuss terms, pricing, payment terms, and other contract details with the selected manufacturer. Be sure to have a written agreement in place.
Quality Assurance:
Implement quality control measures to monitor the production process and ensure the final products meet your specifications and quality standards.
Continuous Monitoring:
Maintain an ongoing relationship with your chosen factory and regularly assess their performance. This helps ensure consistency in quality and reliability.
Remember that finding the right flange factory may take time. Still, thorough research and due diligence are crucial to establishing a reliable and long-term partnership with a manufacturer that meets your needs.

Advantages of our flanges and the services of Yaang can provide

To effectively promote the advantages of our flanges and the services our company can provide, you should consider the following key points:
Yaang’s Flange Advantages:

  • Quality Assurance: Highlight the superior quality of our flanges. Mention any certifications or standards they meet, such as ASTM, ASME, or ISO, which can instill confidence in potential customers.
  • Material Selection: Emphasize the range of materials available for our flanges, including stainless steel, carbon steel, alloy steel, and exotic materials, to cater to diverse industry needs.
  • Customization: If applicable, mention our ability to provide custom flange solutions tailored to specific customer requirements, including size, pressure class, facing type, and special coatings.
  • Precision Engineering: Highlight our company’s commitment to precision engineering, which ensures tight tolerances and reliable performance, even in demanding applications.
  • Testing and Inspection: Describe our rigorous testing and inspection processes, such as non-destructive testing (NDT), to ensure product integrity and safety.
  • Quick Turnaround: If you offer rapid manufacturing or delivery, mention it. Quick turnaround times can be a significant advantage, especially in emergencies.
  • Competitive Pricing: If our prices are competitive, mention this as a selling point. Cost-effectiveness can be a crucial factor in the decision-making process.

Yaang’s Services Offered:

  • Technical Support: Highlight our technical expertise and the availability of engineers or specialists who can assist customers with product selection and design recommendations.
  • Customization Services: Mention our capacity to provide tailored solutions, including bespoke flanges, gaskets, or other components.
  • Inventory Management: If you offer inventory management services, explain how you help customers maintain optimal stock levels, reduce carrying costs, and minimize downtime.
  • Supply Chain Solutions: If our company provides end-to-end supply chain solutions, detail how you ensure a reliable and efficient flow of products from our facilities to the customer’s doorstep.
  • Documentation and Traceability: Emphasize our commitment to providing detailed product documentation, including material certifications, test reports, and traceability to meet industry standards and regulatory requirements.
  • Logistics and Shipping: Describe our capabilities, including international shipping options and any partnerships or agreements that expedite delivery.
  • After-Sales Support: Highlight our commitment to customer satisfaction by offering after-sales support, such as technical assistance, warranty services, and a responsive customer service team.
  • Training and Education: If applicable, mention any training or educational resources you provide to help customers better understand the use, maintenance, and safety of our flanges.
  • Environmental Responsibility: If our company is environmentally conscious, share our sustainability practices, such as recycling programs or eco-friendly materials, which can appeal to environmentally conscious customers.
  • Case Studies and Success Stories: Provide examples of how our products and services have benefited previous customers. Real-world success stories can build trust and demonstrate our capabilities.

Incorporate these advantages and services into our marketing materials, website, and customer communications to effectively convey our company’s value in the flange industry.



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