Features and Advantages
Mechanical strength is strongSpherical graphite structure reduces stress concentration, resulting in significantly higher compressive and tensile strength in pipes compared to gray cast iron pipes, even approaching that of steel pipes.
Excellent corrosion resistanceCast iron itself is highly adaptable to corrosive environments like acids and alkalis, and with the addition of protective linings such as cement or epoxy resins, its lifespan can exceed 50 years.
Easy installation: Utilizes socket or flange connections for fast installation, with excellent seal integrity and low leakage risk.
Adaptable for complex terrainsFlexible performance exceeds that of steel pipes, suitable for laying in complex terrains such as mountains and rivers.
2. Main Application Fields
Municipal Water SupplyCity water supply transmission, especially suitable for long-distance and large-diameter requirements.
Drainage SystemRain and wastewater discharge with 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 tubes (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) | Shorter (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 | High-pressure, high-precision applications | Small bore, temporary works |
4. Production Process and Standards
Centrifugal casting methodThrough high-speed rotation of the mold, the molten iron is evenly distributed, forming a dense tube wall.
International StandardsMeets standards such as ISO 2531, EN 545, ensuring pressure ratings (e.g., K9, K12) align with size specifications.
5. Prospects for development
As urbanization advances and water quality requirements rise, there is an increasing demand for ball mill cast iron pipes in areas such as the renovation of old pipe networks and the construction of sponge cities. Their environmental benefits (recyclability) and long-term cost advantages are becoming increasingly apparent.
