Flange spigot is a pipe fitting that combines flange and socket/spigot structures, playing a pivotal role as a connecting hub in piping systems. It achieves bolted fastening through a flange at one end and nested cooperation with pipes via a socket or spigot at the other end, balancing connection strength and installation flexibility, thus being widely used in various fluid transportation scenarios.
Material Selection
Ductile Iron: Boasting high strength, good toughness, and strong corrosion resistance, it can withstand high pressure and external forces, making it suitable for various water supply, drainage, and industrial piping systems.
Carbon Steel: With relatively high strength and low cost, it is commonly used in general industrial pipes and water supply/drainage pipe connections with moderate pressure requirements.
Stainless Steel: Featuring excellent corrosion resistance and high-temperature resistance, it is applicable to piping systems transporting corrosive media or operating in high-temperature environments, such as in the chemical, food beverage, and pharmaceutical industries.
Structural Features
Dual-end Different Interfaces: One end is a flange, typically a circular flat plate with several bolt holes, used to connect with other flanged pipe fittings, valves, or equipment via bolts; the other end is a socket or spigot. A socket is a concave port designed to receive the spigot end of another pipe. In contrast, a spigot is an outwardly protruding tubular part that can be inserted into the socket of other pipe fittings.
Diverse Size Specifications: Flange spigots come in a wide range of sizes, with common nominal diameters ranging from tens of millimeters to thousands of millimeters, such as DN60mm-DN2000mm, meeting the connection needs of pipes with different diameters.
Application Fields
Water Supply and Drainage Systems: Widely used in urban water supply and drainage pipe networks to connect various cast iron pipes, steel pipes, etc., ensuring the tightness and stability of water transportation and drainage systems. For instance, they are essential in connecting different pipe sections when transporting tap water from water plants to residential communities and collecting sewage from communities to wastewater treatment plants.
Industrial Piping Systems: In industrial fields such as chemical engineering, petroleum, and electric power, they connect pipes transporting various fluid media like oil, natural gas, steam, and chemical raw materials. These industries have high requirements for the tightness and corrosion resistance of pipe connections, and flange spigots provide reliable connections to ensure safe and stable production processes.
Irrigation Systems: In agricultural irrigation, they connect irrigation pipes to transport water from water sources to farmlands, orchards, and other irrigation areas, ensuring that irrigation water is evenly and efficiently distributed to each irrigation point.
Advantages
Secure and Reliable Connection: By bolting flanges together, it provides a strong connecting force, preventing pipes from loosening or disconnecting during operation and effectively avoiding leaks.
Easy Installation and Disassembly: No complex welding operations are required; pipe connection or disassembly can be completed simply by tightening or loosening bolts, significantly reducing installation and maintenance time and improving work efficiency.
Good Tightness: Gaskets are usually installed between flanges to effectively fill gaps and prevent fluid leakage, ensuring the tightness of the piping system.
In conclusion, flange spigots, with their rational structural design, diverse material options, and reliable connection performance, have become indispensable key components in piping systems, providing stable and efficient solutions for fluid transportation in various fields.
