Introduction to ANSI/ASME B16.5 Flanges
ANSI/ASME B16.5 is a standard published by the American National Standards Institute (ANSI) and the American Society of Mechanical Engineers (ASME). It covers pipe flanges and flanged fittings made from cast or forged materials, as well as blind flanges and certain reducing flanges in sizes NPS 1/2 through NPS 24. These flanges are widely used in various industries, such as oil and gas, chemical, power generation, and water treatment. The standard specifies dimensions, pressure – temperature ratings, materials, tolerances, and marking requirements, ensuring the interchangeability and safety of flanged connections in different systems. ANSI/ASME B16.5 Flanges

1. Zhejiang Chengjiu Pipeline Co., Ltd.
Company Introduction
Zhejiang Chengjiu Pipeline Co., Ltd. is a professional manufacturer with a long – standing reputation in the pipeline industry. The company has advanced production equipment and a strict quality control system. It is committed to providing high – quality pipeline products, including ANSI/ASME B16.5 Flanges. With a team of experienced technicians and engineers, Zhejiang Chengjiu Pipeline Co., Ltd. can meet the diverse needs of customers from different industries. The company also attaches great importance to research and development, constantly improving product performance and quality.
Features and Advantages
- Product Quality: Products are manufactured in strict accordance with ANSI/ASME B16.5 standards. High – quality raw materials are selected to ensure the strength and corrosion resistance of flanges.
- Customization: Capable of customizing flanges according to customers’ special requirements, such as specific sizes, materials, and pressure ratings.
- Service: Offers comprehensive pre – sales and after – sales services. Professional sales teams can provide detailed technical support and solutions.
- Website: For more information, please visit https://www.cncjflange.com/.
2. Hebei Shengtai Pipe Fittings Co., Ltd.
Company Introduction
Hebei Shengtai Pipe Fittings Co., Ltd. has been in the pipe fitting manufacturing business for many years. It has a large – scale production base equipped with modern production lines. The company focuses on improving production efficiency while maintaining high – quality standards. They have a wide range of products for domestic and international markets, and their ANSI/ASME B16.5 Flanges have been well – received by customers in the oil and gas sectors.
Features and Advantages
- Cost – effectiveness: Provides high – quality flanges at competitive prices, which is very attractive to cost – sensitive customers.
- Production Capacity: Has a large production capacity, enabling them to fulfill large – order requirements in a timely manner.
- Quality Assurance: Implements a multi – level quality control system from raw material inspection to finished product testing to ensure compliance with international standards.
3. Tianjin Pipe Fittings Group Co., Ltd.
Company Introduction
Tianjin Pipe Fittings Group Co., Ltd. is a well – established enterprise in the pipe fitting manufacturing field. With a rich history and strong technical strength, the company has access to advanced manufacturing technologies. They have a complete R & D system to continuously innovate and improve their products. Their ANSI/ASME B16.5 Flanges are applied in many large – scale engineering projects both at home and abroad.
Features and Advantages
- Technical Innovation: Continuously invests in R & D to introduce new manufacturing processes and improve product performance.
- Global Reach: Has a wide sales network around the world, providing convenient procurement channels for international customers.
- Product Diversity: In addition to standard ANSI/ASME B16.5 Flanges, they also offer a variety of special – purpose flanges to meet different application scenarios.
4. Jiangsu Zhongya Pipe Fittings Co., Ltd.
Company Introduction
Jiangsu Zhongya Pipe Fittings Co., Ltd. is a specialized manufacturer of pipe fittings. It has a professional production team and excellent after – sales service. The company emphasizes environmental protection in the production process and uses advanced energy – saving equipment. Their ANSI/ASME B16.5 Flanges are recognized for their reliable quality and specifications.
Features and Advantages
- Environmental – friendly Production: Adopts green production processes, which is in line with the requirements of modern environmental protection concepts.
- After – sales Service: Provides timely after – sales service, including product installation guidance and maintenance support.
- Accurate Specifications: Ensures the accuracy of flange specifications, reducing the risk of installation and connection problems.
5. Shandong Shengli Pipe Co., Ltd.
Company Introduction
Shandong Shengli Pipe Co., Ltd. is a large – scale enterprise integrating R & D, production, and sales of pipe products. It has a strong R & D team and advanced production technology. The company’s products are widely used in the energy, chemical, and construction industries. Their ANSI/ASME B16.5 Flanges are known for their high – precision manufacturing and stable performance.
Features and Advantages
- High – precision Manufacturing: Uses advanced machining equipment to ensure the high precision of flange dimensions and surface quality.
- Industry Experience: With years of experience in the industry, they have in – depth understanding of customer needs and industry requirements.
- Stable Performance: The flanges have excellent mechanical properties and corrosion resistance, ensuring long – term stable operation in different working environments.
6. Guangdong Jinyi Pipe Fittings Co., Ltd.
Company Introduction
Guangdong Jinyi Pipe Fittings Co., Ltd. is located in a prosperous manufacturing area. It has a modern management system and a young and energetic R & D team. The company focuses on market – oriented production and continuously adjusts its product portfolio to meet market demands. Their ANSI/ASME B16.5 Flanges have unique design features and are popular in the domestic and international markets.
Features and Advantages
- Market – oriented Design: Designs flanges based on market trends and customer feedback, enhancing product competitiveness.
- Fast Response: Can quickly respond to customer orders and delivery requirements, reducing the waiting time for customers.
- Unique Design: Features some unique design elements in flanges, which may improve connection performance and installation convenience.
7. Fujian Longtai Pipe Fittings Co., Ltd.
Company Introduction
Fujian Longtai Pipe Fittings Co., Ltd. is a provincial – level high – tech enterprise. It has a strong scientific research strength and a number of independent intellectual property rights. The company is committed to the development and production of high – performance pipe fittings. Their ANSI/ASME B16.5 Flanges are made of high – strength materials and have excellent mechanical properties.
Features and Advantages
- High – tech R & D: Utilizes high – tech means in product R & D, such as simulation analysis to optimize product design.
- Intellectual Property Protection: Owning independent intellectual property rights, which can ensure the uniqueness and competitiveness of products.
- High – strength Materials: Selects high – strength materials for flange production, improving the load – bearing capacity and durability of flanges.
8. Hubei Hongda Pipe Fittings Co., Ltd.
Company Introduction
Hubei Hongda Pipe Fittings Co., Ltd. has a long – term focus on the pipe fitting industry. It has a stable production process and a well – trained production team. The company is known for its strict quality management and good brand reputation. Their ANSI/ASME B16.5 Flanges are widely used in various general industrial applications due to their reliable quality.
Features and Advantages
- Stable Production Process: Ensures consistent product quality through a stable production process, reducing the occurrence of defective products.
- Quality Management: Strict quality management system from raw material procurement to finished product shipping, ensuring product reliability.
- Brand Reputation: Has a good brand reputation in the market, which is an important guarantee for customer trust.
9. Liaoning Qiangsheng Pipe Fittings Co., Ltd.
Company Introduction

Liaoning Qiangsheng Pipe Fittings Co., Ltd. is based in an area rich in industrial resources. It has access to high – quality raw materials and advanced production technology. The company has a complete set of production and testing equipment. Their ANSI/ASME B16.5 Flanges are suitable for harsh working environments, such as low – temperature and high – pressure conditions.
Features and Advantages
- Resource Advantage: Benefits from local industrial resources, ensuring the supply of high – quality raw materials at a reasonable cost.
- Suitability for Harsh Environments: The flanges are designed and manufactured to perform well in harsh working environments, expanding their application scope.
- Complete Equipment: With a complete set of production and testing equipment, they can ensure the quality and performance of flanges.
10. Anhui Huaxin Pipe Fittings Co., Ltd.
Company Introduction
BW Pipe Fittings Anhui Huaxin Pipe Fittings Co., Ltd. is a growing enterprise in the pipe fitting manufacturing industry. It has a flexible production model and a customer – oriented service concept. The company continuously improves its production efficiency and product quality. Their ANSI/ASME B16.5 Flanges are popular among small and medium – sized enterprises due to their cost – effective features.
Features and Advantages
- Flexible Production Model: Can quickly adjust production plans according to customer order changes, providing more flexible procurement options for customers.
- Customer – oriented Service: Focuses on meeting customer needs, providing personalized service and technical solutions.
- Cost – effectiveness: Offers cost – effective flanges, which is very suitable for small and medium – sized enterprises with budget constraints.