A DN800 flange is a component used in piping systems to provide a secure and leak-proof connection between pipes, valves, pumps, and other equipment. The “DN800” designation refers to the nominal diameter of the flange, which is 800 millimeters, making it suitable for large-diameter pipelines. If you are interested in our DN800 flanges, please contact us.
DN800 Flange Brief Overview
A DN800 flange is a large-diameter flange with a nominal size of 800 millimeters, utilized for linking pipes, valves, pumps, and additional apparatus within a piping network. Usually crafted from materials like stainless steel, carbon steel, or alloy steel to ensure strength and resistance to corrosion. DN800 flanges come in various types, including weld neck, slip-on, blind, and socket weld, each designed to meet specific application needs and pressure ratings.
These flanges adhere to industry standards like ASME, ANSI, and DIN, ensuring compatibility and reliability. They are essential in sectors like oil and gas, petrochemicals, water treatment, and electricity generation, providing secure and leak-proof connections while facilitating easy installation and maintenance.
Material Composition Of DN800 Flange
Stainless steel is recognized for its ability to resist corrosion and its long-lasting durability (grades such as 304, 316) is commonly used in environments requiring resistance to chemicals, acids, and high temperatures.
Offers strength and affordability, making it appropriate for standard applications where corrosion resistance isn’t the main priority. It’s often used in industrial and construction settings.
Combines elements to enhance specific properties like strength, hardness, and corrosion resistance. Alloy steels (such as ASTM A182 F11, F22) are used in high-pressure and high-temperature applications, such as in oil refineries and power plants.
Types And Designs Of DN800 Flange
Weld Neck Flange
This flange variety features an elongated neck (hub) that is welded onto the pipe, providing high strength and structural integrity. It is ideal for high-pressure applications and critical services where leakage is not acceptable.
Slip-On Flange
These flanges slip over the pipe and are then welded in place. Aligning them is simpler compared to weld neck flanges and are used in low-pressure and non-critical applications.
Blind Flange
A solid disk without a bore, used to close off the end of a pipe or valve. Blind flanges are commonly used for pressure testing or to block off sections of piping systems.
Socket Weld Flange
Designed for use with small-bore pipes and high-pressure applications. The pipe is placed inside the socket of the flange and welded for a strong, leak-proof connection.
Threaded Flange
Features internal threads that mate with the external threads of pipes. They are typically employed in applications with lower pressure requirements and where disassembly is frequently required.
Lap Joint Flange
It comprises two components: a stub end welded to the pipe, while the backing flange slides over the pipe and is not welded. Lap joint flanges allow for easy alignment and quick disassembly.
Dimensions And Standards Of DN800 Flange
Dimensions
Outer Diameter (OD)
The outer diameter of a DN800 flange varies depending on the type and design but generally falls within a standard range specified by relevant standards.
Bolt Circle Diameter (BCD)
This refers to the diameter of the circular area defined by the centers of the bolt holes. For DN800 flanges, the bolt circle diameter accommodates a specified number of bolts in a circular pattern.
Number Of Bolt Holes
DN800 flanges typically have a set number of bolt holes around the bolt circle diameter. The number of bolt holes varies with the flange type and pressure rating.
Flange Thickness
The thickness of the flange, which contributes to its strength and ability to withstand pressure and stress within the piping system.
Standards
ASME B16.5
This standard covers dimensions and tolerances for pipe flanges in sizes NPS 1/2 through NPS 24. It includes pressure-temperature ratings, materials, marking, and testing requirements.
EN 1092-1
European standard specifying requirements for circular steel flanges with PN designated pressures and dimensions, including DN800 flanges.
DIN Standard
The German Institute for Standardization (DIN) publishes standards for flanges used in industrial applications, including DIN 2576, DIN 2501, DIN 2633, among others.
ANSI/ASME B16.47
These standards cover large diameter flanges (NPS 26 through NPS 60) and provide specific dimensions, pressure ratings, materials, and other requirements.
Advantages And Benefits Of DN800 Flange
- Constructed from robust materials such as stainless steel, carbon steel, or alloy steel, DN800 flanges provide exceptional strength and durability, ensuring long-term reliability and performance under high-pressure and high-temperature conditions;
- Flanges facilitate secure and leak-proof connections between pipes, valves, and equipment, reducing the risk of fluid or gas leakage in critical industrial processes;
- Available in different types (weld neck, slip-on, blind, socket weld, etc.) and designs, DN800 flanges cater to a broad spectrum of applications and operational requirements, providing flexibility in system design and installation;
- Flanges allow for straightforward assembly and disassembly of piping components, facilitating easier maintenance, repair, or modification of the system without extensive downtime;
- Designed and produced in accordance with global standards (such as ASME, ANSI, DIN), DN800 flanges ensure compatibility with various pipe sizes, materials, and system configurations, promoting seamless integration within complex industrial environments;
- Withstand high-pressure and high-temperature conditions encountered in sectors like oil and gas, petrochemicals, power generation, and water treatment, maintaining system integrity and safety.
DN800 Flange Manufacturer
Elite Piping Manufacture Co., Ltd. is a leading manufacturer specializing in DN800 flanges, renowned for our dedication to excellence, innovation, and dependability in the piping industry. With an emphasis on precise engineering and cutting-edge manufacturing techniques, Elite Piping delivers flanges that meet stringent international standards such as ASME, ANSI, and DIN.
Our comprehensive range of DN800 flanges includes weld neck, slip-on, blind, socket weld, and other types, tailored to diverse industrial applications. Known for superior material selection, durable construction, and leak-proof design, Elite Piping’s DN800 flanges ensure robust performance under high-pressure and high-temperature conditions in sectors such as oil and gas, petrochemicals, power generation, and water treatment.
Committed to customer satisfaction, Elite Piping offers customization options, technical support, and efficient delivery, making us a trusted partner for seamless integration and reliability in piping systems worldwide.
