Spheroidal Graphite Iron Pipes
Spheroidal Graphite Iron Pipes
Spheroidal graphite iron pipes (also referred to as SGPi) are commonly used in applications where good corrosion resistance and high strength are required. They are used in both fire protection and non-fire protection systems in numerous different industries. Spheroidal graphite iron pipes can provide superior strength and durability which is ideal for installations in which extreme temperatures and pressure are a factor. These pipes are also less prone to stress corrosion cracking, and can be used in a wide variety of environmental conditions.
Spheroidal graphite iron pipes are heat-treated during manufacturing in order to improve their strength and to reduce their susceptibility to corrosion. The heat-treating process is done in a natural gas-fired furnace, and the pipes are then quenched to cool them quickly. This helps to ensure that the pipes have a fine grained structure which gives them maximum strength and durability.
The surface of spheroidal graphite iron pipes is also usually covered with a layer of zinc coating in order to increase their corrosion resistance. This zinc coating helps to prevent oxidation of the pipe and also helps to increase the service life of the pipe. Additionally, the zinc coating also helps to protect the underlying metal from exposure to water, harmful chemicals, and other corrosive materials.
Spheroidal graphite iron pipes are manufactured to meet any kind of specification and design. For example, pipes can be manufactured according to GB/T3421-1982, which specifies the type and size of the pipe, as well as its mechanical properties. This specification also includes dimensional tolerances and surface finishes that can be applied to the pipe.
There are various types of spheroidal graphite iron pipes available for different applications. These pipes can be used for pressure, hydronic heating and cooling, water supply and irrigation, fuel oil, and fire protection systems. There are also several types of spheroidal graphite iron pipe joints and fittings available. These fittings can be used in order to connect different sectional pipes and provide strength to the entire system.
Although spheroidal graphite iron pipes are more expensive than other types of pipes, they are extremely strong and durable. They are also highly resistant to corrosion and other environmental conditions which can make them a great option when installing a reliable and long-lasting pipe system.
