BS 4504 PN 6 Code 111 Carbon Steel and Stainless Steel Weld Neck Flanges for Industrial Purposes

Introduction:

We are Shaanxi Peter International Trade Co., Ltd., a reputable and well-established company of rich experience in the industry. As your reliable supplier, we have been providing high-quality BS4504 WELD NECK FLANGES for more than 20 years in the industry.

BS4504 weld neck flanges are a type of pipe flange that is designed to be butt-welded to the end of a pipe. They have a long tapered hub that gradually merges with the pipe, providing reinforcement and reducing stress concentrations. The flange is then bolted to another weld neck flange or a compatible flange using bolts or studs.

BS4504 standards are widely used in Europe, particularly in UK and BS4504 weld neck flanges conform to the specific dimensional and technical requirements set by BS standards. These flanges are available in various materials such as carbon steel, stainless steel, and alloy steel, allowing them to be used in a wide range of applications in industries such as oil and gas, petrochemical, power generation, and more.

Description of BS4504 Weld Neck Flanges:

BS4504 weld neck flange is a type of flange that has a tapered hub or a high hub, which allows it to transfer stress from the flange to the pipes, reducing stress concentration at the base of the flange. It is commonly used in high-pressure and high-temperature applications.

There are two main designs of BS4504 weld neck flanges. The first type has a shorter neck and is used with pipes, allowing the pipe to be inserted into the flange and welded to create a strong and leak-proof connection. The second type has a longer neck and is typically used in process plants where the flange is not directly connected to pipes but is instead used for connecting various equipment or components within the plant.

BS4504 Weld neck flanges are usually made from forged materials, which provide strength and durability. The neck of the flange extends beyond the flange's circumference and has bolt holes drilled into it. These bolt holes allow the flange to be attached to another flange or equipment using bolts, creating a secure and sealed connection.

The design of BS4504 weld neck flanges offers several advantages, including improved structural integrity and resistance to high pressures and temperatures. The welding of the flange to the pipe or equipment provides a strong and reliable joint, reducing the risk of leakage or failure in critical applications.

BS4504 Weld Neck Flange Dimensions:

1.Dimensions are in millimeters(mm).

2.Dimensions can be specified by different purchasers.

Materials of BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges:

BS4504 weld neck flanges are available in various materials to suit different applications and operating conditions. The material selection for BS4504 weld neck flanges depends on factors such as temperature, pressure, corrosion resistance, and compatibility with the conveyed fluid or gas.

Some Common Grades of Carbon Steel:

ASTM A105: This is a common grade of carbon steel used for weld neck flanges. It is a forged carbon steel specifically designed for high-temperature service and offers excellent weldability and toughness.

ASTM A350 LF2: LF2 is a low-temperature carbon steel grade commonly used for weld neck flanges in applications where low-temperature toughness is required.

ASTM A694 F52/F60/F65/F70: These grades are high-yield carbon steel materials used for weld neck flanges in applications requiring high strength and impact resistance.

Some Common Grades of Stainless Steel:

ASTM A182 F304/F304L: These grades of stainless steel are austenitic and commonly used for weld neck flanges. They offer good corrosion resistance, excellent weldability, and are suitable for a wide range of applications.

ASTM A182 F316/F316L: Similar to F304/F304L, these grades are also austenitic stainless steels with improved corrosion resistance, particularly in chloride environments.

ASTM A182 F321: F321 is an austenitic stainless steel grade containing titanium, which provides enhanced resistance to intergranular corrosion. It is often used for weld neck flanges in high-temperature applications.

ASTM A182 F347: F347 is a stabilized stainless steel grade with the addition of niobium, which improves its resistance to intergranular corrosion. It is commonly used for weld neck flanges in applications involving elevated temperatures.

Advantages of BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges:

BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges offer several advantages that make them a popular choice for connecting pipes in various industries. Here are some key advantages of these flanges:

Strong and Durable Connection: Weld Neck Flanges provide a strong and reliable connection between pipes. The welding process creates a permanent joint that can withstand high pressures, temperatures, and mechanical stresses. They offer excellent resistance to leakage and ensure long-term durability.

High Temperature and Pressure Resistance: BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges are designed to withstand elevated temperatures and high-pressure conditions. Carbon steel flanges have good heat resistance and can handle high-temperature applications, while stainless steel flanges offer excellent corrosion resistance and can withstand aggressive environments.

Leakage Prevention: Weld Neck Flanges have a tapered hub and a neck that extends into the pipe, which helps in reducing turbulence and flow resistance. The design of the flange, combined with the use of a gasket, ensures a tight and leak-free seal. This makes them suitable for applications where leakage prevention is critical.

Enhanced Structural Integrity: The extended neck of the Weld Neck Flange provides reinforcement to the pipe and improves the overall structural integrity of the connection. This feature is especially beneficial in applications where the pipe is subjected to higher stresses, vibrations, or bending moments.

Easy Alignment: Weld Neck Flanges are relatively easy to align during installation. The long neck of the flange allows for easy access and space for welding, ensuring proper alignment of the pipe and flange. This makes the installation process more efficient and reduces the chances of misalignment.

Versatility: BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges come in a wide range of sizes, pressure ratings, and materials. This versatility allows for compatibility with different pipe sizes and applications. They can be used in various industries, including oil and gas, chemical processing, power generation, water treatment, and more.

Interchangeability: Weld Neck Flanges manufactured according to the BS4504 standard offer interchangeability and compatibility with other flanges manufactured to the same standard. This facilitates easy replacement or modification of flanges without the need for extensive modifications to the piping system.

Applications of BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges:

BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges are commonly used in various applications where a strong and leak-free connection between pipes or equipment is required. Here are some typical applications of these flanges:

Oil and Gas Industry: BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges are widely used in the oil and gas industry for connecting pipes, valves, and equipment in upstream, midstream, and downstream operations. They are suitable for applications such as oil and gas pipelines, refineries, petrochemical plants, and offshore platforms.

Power Generation: BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges find extensive use in power generation facilities, including thermal power plants, nuclear power plants, and renewable energy installations. They are used to connect pipes and fittings in steam lines, condenser systems, and other high-pressure and high-temperature applications.

Chemical and Petrochemical Industry: BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges are commonly employed in chemical processing plants, petrochemical refineries, and chemical storage facilities. They are used in applications involving corrosive fluids, high temperatures, and high-pressure conditions.

Water and Wastewater Treatment: BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges are used in water treatment plants, wastewater treatment facilities, and desalination plants. They are suitable for connecting pipes and equipment in water supply systems, sewage systems, and various treatment processes.

HVAC and Plumbing Systems: BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges are utilized in heating, ventilation, and air conditioning (HVAC) systems, as well as plumbing installations. They provide a secure connection for pipes carrying hot or chilled water, steam, or other fluids in commercial buildings, residential complexes, and industrial facilities.

Food and Beverage Industry: BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges are used in the food and beverage industry for hygienic and sanitary applications. They are suitable for connecting pipes in processing plants, breweries, dairies, and other food production facilities.

Pharmaceutical Industry: BS4504 Carbon Steel and Stainless Steel Weld Neck Flanges find application in the pharmaceutical industry, where sanitary and sterile conditions are essential. They are used in pharmaceutical manufacturing plants and laboratories to connect pipes and equipment for the production of medicines and drugs.