Features and Advantages
Mechanical strength is strongSpherical graphite structure reduces stress concentration, resulting in significantly higher compressive and tensile strength for pipes compared to gray cast iron pipes, even approaching that 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 resin, its lifespan can exceed 50 years.
Easy installationThe connections are made using socket or flange joints, ensuring fast installation and excellent seal integrity with low risk of leakage.
Adaptable to complex terrainsFlexible performance exceeds steel pipes, suitable for laying in complex terrains such as mountains and rivers.
2. Main Application Fields
Municipal Water SupplyCity tap water transmission, especially suitable for long-distance, large-diameter requirements.
Drainage systemRainwater and wastewater discharge, strong resistance to ground subsidence.
Gas TransmissionGases and other media transmission with reliable sealing.
Industrial SectorCorrosive medium transportation for chemical plants, thermal power plants, etc.
3. Compared to other piping materials
| Type | Ball mill cast iron pipe | Steel Pipe | Plastic Pipes (e.g., PE) |
|---|---|---|---|
| Strength | High (close to steel pipe) | High | Lower |
| Corrosion resistance | Superior (especially after lining) | Corrosion-prone; requires anti-corrosion treatment | Excellent corrosion resistance |
| Service Life | Long-term (50 years or more) | Medium (Maintenance Required) | 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 | Challenging terrain, preference for large bore sizes | 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. Future Prospects
With the advancement of urbanization and increased water quality requirements, there is a growing demand for ball mill cast iron pipes 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.
