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K-Type Flange Ductile lron Pipe
Material: Ductile iron
By adding a spheroidizing agent (such as magnesium or cerium) to the molten iron, the graphite in the cast iron is transformed from flake to spherical.
Core advantages: This structure gives the material high strength (high tensile strength), good toughness (good elongation), excellent impact resistance and corrosion resistance close to steel, while retaining the good casting performance and shock absorption of cast iron. Its comprehensive mechanical properties far exceed those of ordinary gray cast iron.
Connection method: Flange connection
Flanges are pre-cast (or welded, but integral casting is most common) at both ends of the pipe.
During installation, align the flanges at the two ends of the pipe, place a sealing gasket (such as a rubber gasket) in the middle, and then fasten the two flanges together with bolts and nuts.
Core advantages:
Easy to install and disassemble: It is convenient for segmented installation, maintenance and replacement of pipelines.
Firm and reliable connection: Bolted connection provides strong rigidity.
Good sealing performance: Choosing the right gasket can achieve excellent sealing effect, suitable for higher pressure.
Easy to connect valves and equipment: Flange is the standard interface form of valves, water pumps, storage tanks and other equipment, making it very convenient to connect the pipeline system.
Internal and external protective coating:
Lining: Cement mortar lining is usually used. This provides excellent anti-corrosion protection (preventing water from corroding the pipe wall), maintaining water quality (meeting drinking water standards), reducing head loss (smooth inner wall), and preventing scaling.
External anti-corrosion: The most common is zinc-rich primer + asphalt-based coating. In special corrosive environments (such as seawater, strong acid and alkali soils), more advanced coatings such as polyurethane, epoxy resin, PE sleeve, etc. will be used to provide strong external corrosion protection.
Mechanical properties
Works test pressure
Thickness of cement lining
Dimension
Mauritania Project
In the process of urban construction in Mauritania, ductile iron pipes have laid a solid foundation for the reliable operation of municipal projects with their excellent performance.
Ethiopia kismayo urban water supply
It is resistant to high temperature and salt-alkali corrosion, adapted to the local desert climate and soil conditions, and ensures long-term and stable water supply in the pipeline.
Durban, South Africa
The flexible interface speeds up installation, is suitable for pipe network renovation in old urban areas, facilitates subsequent maintenance, and reduces operating costs.
Durban City Water Supply, South Africa
Adapted to Durban's hot and humid climate and coastal saline environment, the anti-corrosion coating effectively resists rust and ensures the long-term stability of the water supply system.
Dammam, Saudi Arabia
Adapting to the hot and dry climate of Daman, the pipeline has strong thermal stability, ensuring the reliable operation of the water supply system in hot environments.
Shaanxi sewage renovation
The inner wall anti-corrosion layer resists the erosion of acid and alkali substances in sewage, adapts to complex water quality, and extends the service life of the pipeline.
Xinjiang
Adapting to the large temperature difference between day and night and seasons in Xinjiang, the pipeline has strong stability in thermal expansion and contraction, ensuring smooth water supply.
Greek City Water Supply
Adapted to the water quality characteristics of Greek coastal cities, it resists seawater backflow and salt erosion, and ensures stable water quality.
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