Introduction to PN Flanges
PN flanges, also known as pressure nominal flanges, are a type of pipe flange that are widely used in various industries for connecting pipes, valves, pumps, and other equipment. The “PN” stands for pressure nominal, which indicates the pressure rating of the flange. PN flanges are designed according to specific standards, such as European standards (EN), and are available in different sizes, pressure ratings, and materials to meet the diverse requirements of different applications. They are known for their reliable sealing performance, high strength, and ease of installation and maintenance. PN Flanges

10 Leading PN Flanges Manufacturers in China
1. Zhejiang Chengjiu Pipeline Co., Ltd.
Zhejiang Chengjiu Pipeline Co., Ltd. is a professional enterprise specializing in the production of various types of flanges, including PN flanges. The company has advanced production equipment and a strict quality control system. With years of experience in the industry, it has developed a strong technical team that can provide customized flange solutions according to customers’ needs. They are committed to using high – quality raw materials to ensure the durability and performance of their PN flanges.
Features in PN Flanges:
- High precision in manufacturing to meet strict international standards for PN flanges.
- A wide range of sizes and pressure ratings are available, which can satisfy different project requirements.
- Good surface finish, which helps in better sealing when connected to pipes or other equipment.
Advantages:
- Customization capabilities to adapt to special requirements of customers.
- Competitive pricing without sacrificing quality, which can provide cost – effective solutions for customers.
- Excellent after – sales service to ensure customer satisfaction.
Website: https://www.cncjflange.com/
2. Hebei Shengtai Pipeline Manufacturing Group Co., Ltd.
Hebei Shengtai Pipeline Manufacturing Group Co., Ltd. is a large – scale enterprise in the pipeline industry. It covers a large production area and has a complete set of production lines for PN flanges. The company has a long – standing reputation for its product quality and has passed a series of international quality management system certifications. It has a large market share in both domestic and international markets.
Features in PN Flanges:
- Produces PN flanges with high – strength materials, which can withstand high – pressure and high – temperature environments.
- Strict inspection processes during production to ensure zero – defect products.
- Innovative production technology to improve the production efficiency of PN flanges.
Advantages:
- Large production capacity, which can meet large – scale project needs in a short time.
- A well – established distribution network, which can ensure timely delivery of products.
- Continuous R & D investment to keep up with the latest market demands.
3. Tianjin Deli Forging Co., Ltd.
Tianjin Deli Forging Co., Ltd. has rich experience in forging technology. This expertise is fully utilized in the production of PN flanges. The forging process gives the flanges better mechanical properties and internal structure. The company has a professional R & D department that is constantly working on improving the performance of its PN flanges.
Features in PN Flanges:
- PN flanges produced by forging have high density and excellent toughness.
- Can produce special – shaped PN flanges according to complex engineering designs.
- Good corrosion resistance, suitable for use in harsh chemical environments.
Advantages:
- Strong forging technology background, which is difficult to replicate by some competitors.
- High – quality products that can be used in high – end applications such as petrochemical and power generation industries.
- Good cooperation with raw material suppliers to ensure the stability of raw material quality.
4. Jiangsu Hongsheng Flange Co., Ltd.
Jiangsu Hongsheng Flange Co., Ltd. focuses on the production of PN flanges with a customer – centered business philosophy. The company has a team of experienced sales and after – sales service staff. They pay great attention to product innovation and quality improvement.
Features in PN Flanges:
- A variety of connection methods for PN flanges, such as welding, threaded, and socket – weld, are available.
- Products have a long service life, reducing the need for frequent replacements.
- The company uses environmentally friendly production processes in the manufacturing of PN flanges.
Advantages:
- Excellent customer service, which can quickly respond to customer inquiries and solve problems.
- Regular product upgrades based on customer feedback and market trends.
- Cost – effective products that can help customers save on project costs.
5. Shandong Xinhai Flange Manufacturing Co., Ltd.
Shandong Xinhai Flange Manufacturing Co., Ltd. is located in an area rich in industrial resources. It has easy access to high – quality raw materials. The company has a modern management system and a group of highly skilled workers. It is committed to providing reliable PN flanges to the market.
Features in PN Flanges:
- PN flanges have good dimensional accuracy, ensuring a perfect fit with pipes and other equipment.
- The surface treatment of flanges can effectively prevent rust and corrosion.
- Can produce PN flanges in large quantities with consistent quality.
Advantages:
- Low – cost production due to the geographical advantage of raw material procurement.
- A stable production process that can ensure the long – term supply of high – quality products.
- Good brand image in the market, which is trusted by many customers.
6. Guangdong Jinyi Steel Pipe Co., Ltd.
Guangdong Jinyi Steel Pipe Co., Ltd. not only produces steel pipes but also has a strong production capacity for PN flanges. The company has a complete industrial chain, from raw material procurement to product manufacturing and sales. This integrated operation mode gives it an edge in cost control and product quality management.
Features in PN Flanges:
- PN flanges are made of high – quality steel materials, with high strength and good ductility.
- The production process is strictly monitored from raw materials to the finished product.
- Can provide a one – stop solution for customers who need both steel pipes and PN flanges.
Advantages:
- Integrated industrial chain, which can reduce production costs and shorten the delivery time.
- High – quality products that meet national and international standards.
- Strong R & D ability to develop new – type PN flanges to meet emerging market demands.
7. Shanxi Changxing Forging Co., Ltd.
Shanxi Changxing Forging Co., Ltd. has a long – standing history in the forging industry. It has accumulated a wealth of experience in producing PN flanges. The company has a strict quality control system that starts from the selection of raw materials to the final product inspection.
Features in PN Flanges:
- Forged PN flanges have excellent internal structure and mechanical properties.
- Can produce large – diameter PN flanges for large – scale projects.
- The products have a high degree of surface flatness, which is beneficial for sealing.
Advantages:
- Long – term industry experience, which guarantees reliable product quality.
- Professional technical team for production process optimization and product improvement.
- Good reputation in the market, especially in the heavy – industry field.
8. Fujian Longyan Flange Co., Ltd.
Fujian Longyan Flange Co., Ltd. is known for its unique production technology and product design. The company has a strong R & D ability and is constantly exploring new materials and production processes for PN flanges.
Features in PN Flanges:
- PN flanges have novel designs that can improve the connection efficiency and stability.
- Some of its products use new materials with better performance, such as special alloys.
- The flange surface treatment technology can enhance the anti – wear performance.
Advantages:
- Strong R & D innovation ability, which can lead the market trend.
- Ability to quickly adapt to new market demands and develop new products.
- Good cooperation with scientific research institutions to introduce advanced technologies.
9. Hainan Xingda Pipe Fittings Co., Ltd.
Hainan Xingda Pipe Fittings Co., Ltd. focuses on the production of high – quality PN flanges. It has a modern production base and advanced production equipment. The company adheres to the principle of “quality first” and has a complete after – sales service system.
Features in PN Flanges:
- Products are produced with strict quality control to meet high – level quality requirements.
- A wide range of PN flanges are available for different industrial applications.
- The flanges have good anti – leakage performance due to precise manufacturing.
Advantages:
- High – quality products that can be used in critical projects.
- A well – organized after – sales service system to solve any problems encountered by customers.
- Competitive pricing strategy to attract more customers.
10. Inner Mongolia Huasheng Flange Manufacturing Co., Ltd.
Inner Mongolia Huasheng Flange Manufacturing Co., Ltd. is located in an area with rich metal resources. This geographical advantage enables it to have stable and high – quality raw material supplies. The company has a large – scale production base and a professional production team.

Features in PN Flanges:
- PN flanges are made of local high – quality metals, which have good physical and chemical properties.
- The company has large – scale production capabilities, ensuring sufficient supply for large – scale projects.
- The products have a high degree of standardization, making them easy to install and use.
B16.47 & AWWA C207 Flanges Advantages:
- Stable raw material supply, which guarantees the continuity and quality of production.
- Large – scale production can achieve economies of scale and reduce costs.
- Good brand influence in the local and surrounding markets.