Features and Advantages
Superior mechanical propertiesSpherical graphite structure reduces stress concentration, making the pipeline far more resistant to pressure and tensile strength than ordinary gray cast iron pipes, even approaching steel pipes.
Excellent corrosion resistanceCast iron has strong resistance to corrosive environments like acids and alkalis, and with the addition of a lining of cement or epoxy resin for corrosion protection, its lifespan can exceed 50 years.
Easy installationUtilizing socket and spigot or flange connections, installation is quick and the joints offer excellent sealing, reducing the risk of leakage.
Adaptable for complex terrainFlexible performance exceeds that of steel pipes, suitable for laying in complex terrains such as mountains and rivers.
2. Main Application Fields
Municipal Water SupplyCity tap water transportation, especially suitable for long-distance and large-diameter requirements.
Drainage SystemRainwater and sewage discharge, strong resistance to ground subsidence.
Gas TransmissionGas and other medium transmission, reliable sealing.
Industrial sectorCorrosive medium transportation for chemical plants and thermal power plants.
3. Compared to other piping materials
| Type | Ball mill cast iron pipe | Steel pipe | Plastic pipes (such as PE) |
|---|---|---|---|
| Strength | High (close to steel pipe) | High | Lower |
| Corrosion resistance | Excellent (especially after lining) | Rust-prone, requires anti-corrosion treatment | Excellent corrosion resistance |
| Service Life | Long-term (50 years or more) | Medium (requires maintenance) | Short (20-30 years) |
| Cost | Initial investment is high, with low long-term maintenance. | Low initial investment, high maintenance costs | Low initial investment, frequent replacement |
| Applicability | Complex terrain, preference for large diameters | High-pressure, high-precision applications | Small bore, temporary works |
4. Production Process and Standards
Centrifugal casting methodThe molten iron is evenly distributed and forms a dense tube wall through the high-speed rotation of the mold.
International StandardsMeets standards such as ISO 2531, EN 545, ensuring pressure ratings (e.g., K9, K12) align with size specifications.
5. Prospects
With urbanization advancement and increased water quality standards, the demand for ball mill cast iron pipes is rising in areas such as the renovation of old pipeline networks and sponge city construction. Their environmental benefits (recyclable) and long-term cost advantages are becoming increasingly apparent.
