Flange plates are critical components in various industries, serving as essential connectors in piping systems, machinery, and structural applications. In China, the production and use of flange plates have seen significant growth, driven by the country’s booming industrial sector. Understanding the intricacies of flange plates is vital for engineers, manufacturers, and procurement professionals alike.

This guide will delve into the types, materials, and manufacturing processes of flange plates in China. Readers can expect to gain insights into industry standards, quality control measures, and the latest technological advancements. Additionally, we will explore market trends and the implications for global supply chains.

By the end of this guide, readers will have a comprehensive understanding of flange plates, equipping them with the knowledge to make informed decisions in their respective fields. Whether you are involved in design, production, or procurement, this resource will enhance your expertise and awareness of this essential component.

A Comprehensive Guide to Plate Flanges in China

Plate flanges, also known as flat flanges, are essential components in piping systems, particularly in low-pressure applications. They serve various functions, including connecting pipes, blocking pipe ends, and reinforcing connections. This guide will delve into the technical features, types, and applications of plate flanges, highlighting key manufacturers in China, such as Chinaflangefitting.com, www.znsteelflange.com, www.landeeflange.com, www.oflange.com, and www.fitting-flange.com.

Technical Features of Plate Flanges

Plate flanges are characterized by their simple design and functionality. They are typically made from materials like carbon steel and stainless steel, chosen based on the specific requirements of the application. Below is a comparison table of the technical features of plate flanges.

Feature	Description
Material	Commonly made from carbon steel, stainless steel, or alloy steel.
Size Range	Available in sizes from 1/2″ to 80″, accommodating various piping needs.
Pressure Ratings	Typically rated for low to medium pressure applications (150#, 300#, 600#).
Connection Type	Can be welded or bolted, depending on the application requirements.
Shape	Round, with evenly spaced holes for bolting.
Standards	Manufactured according to ASME B16.5, EN1092-1, and other international standards.
Surface Treatment	Options include anti-rust oil, paint, and galvanizing for corrosion resistance.

Types of Plate Flanges

Plate flanges come in various types, each designed for specific applications and requirements. The following table outlines the different types of plate flanges and their characteristics.

Type	Description
Blind Flange	Used to seal the end of a piping system, preventing flow.
Lap Joint Flange	Designed for use with a stub end, allowing for easy alignment and disassembly.
Slip-On Flange	Slides over the pipe and is welded in place, suitable for low-pressure applications.
Weld Neck Flange	Features a long neck that provides a gradual transition from the flange to the pipe, ideal for high-pressure applications.
Socket Weld Flange	Designed for small diameter pipes, where the pipe is inserted into the flange and welded.
Threaded Flange	Has internal threads for easy installation without welding, suitable for low-pressure applications.

Applications of Plate Flanges

Plate flanges are widely used across various industries, including:

Petrochemical Industry: Essential for connecting pipelines in oil and gas applications.
Pharmaceutical Industry: Used in systems requiring high cleanliness and corrosion resistance.
Food Industry: Ensures safe and hygienic connections in food processing systems.
Aviation and Aerospace: Critical for lightweight and durable connections in aircraft systems.
Construction: Utilized in structural applications for joining different components.

Key Manufacturers in China

China is home to several reputable manufacturers of plate flanges, each offering a range of products and services. Notable companies include:
– Wilson Pipeline (Chinaflangefitting.com): Specializes in plate flanges made from super duplex stainless steel, offering a variety of sizes and pressure ratings.
– Zhongnuo Steel Flange (www.znsteelflange.com): A leading forged flange manufacturer with over 20 years of experience, providing high-quality products.
– Landee Flange (www.landeeflange.com): Offers a wide range of flanges, including plate flanges, with customization options available.
– Oflange (www.oflange.com): Known for its innovative solutions and high-quality flanges, catering to both domestic and international markets.
– Cangzhou PengTong Pipe Fitting Manufacturing Co., Ltd. (www.fitting-flange.com): Specializes in various types of flanges, ensuring compliance with international standards.

Conclusion

Plate flanges play a crucial role in the functionality and safety of piping systems across various industries. Understanding their technical features and types can help in selecting the right flange for specific applications. With numerous manufacturers in China, such as those mentioned above, businesses can find high-quality plate flanges tailored to their needs.

FAQs

1. What materials are plate flanges made from?
Plate flanges are commonly made from carbon steel, stainless steel, and alloy steel, depending on the application requirements.

2. How do I choose the right size of plate flange?
The size of the plate flange should match the diameter of the pipe it will be connected to. Always refer to the pipe specifications before making a selection.

3. Can plate flanges be customized?
Yes, many manufacturers, including Landee Flange and Oflange, offer customization options for plate flanges to meet specific requirements.

4. What are the pressure ratings for plate flanges?
Plate flanges are typically rated for low to medium pressure applications, with common ratings including 150#, 300#, and 600#.

5. How are plate flanges installed?
Plate flanges can be installed by bolting or welding, depending on the type of flange and the requirements of the piping system.