Features and Advantages
Superior mechanical propertiesSpherical graphite structure reduces stress concentration, resulting in pipes with significantly higher compressive and tensile strengths compared to gray cast iron pipes, even approaching those of steel pipes.
Excellent corrosion resistanceCast iron has excellent resistance to corrosive environments such as acids and alkalis, and with the addition of protective linings like cement or epoxy resins, its lifespan can exceed 50 years.
Easy installationAccepts socket or flange connections, offering fast installation and excellent sealing at the joints, minimizing the risk of leaks.
Adaptable to complex terrainFlexible performance exceeds 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 systemRain and sewage discharge with strong resistance to ground subsidence.
Gas TransmissionGas and other medium transmission, reliable sealing.
Industrial SectorCorrosive medium transportation for chemical plants, thermal power plants, etc.
3. Compared to other piping materials
| Type | Ball Mill Cast Iron Pipes | Steel pipe | Plastic pipes (such as PE) |
|---|---|---|---|
| Strength | High (close to steel pipe) | High | Lower |
| Corrosion resistance | Excellent (especially after lining) | Corrosion-prone, requires anti-corrosion treatment | High 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 bore sizes | High-pressure, high-precision applications | Small bore, temporary works |
4. Production Process and Standards
Centrifugal casting methodThe iron water 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. Future Prospects
As urbanization advances and water quality requirements increase, the demand for ball mill cast iron pipes is growing in areas such as the renovation of old pipelines and the construction of sponge cities. Their environmental benefits (recyclability) and long-term cost advantages are becoming increasingly evident.
