1. Features & Benefits
Excellent mechanical propertiesSpherical graphite structure reduces stress concentration, resulting in significantly higher compressive and tensile strengths for the pipes compared to gray cast iron pipes, even approaching those of steel pipes.
Excellent corrosion resistanceCast iron itself is highly adaptable to corrosive environments such as acids and alkalis. With the addition of a lining made of cement or epoxy resin for corrosion protection, its lifespan can exceed 50 years.
Easy installation: Utilizes socket or flange connections for quick installation and excellent seal at the joints, minimizing the risk of leaks.
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 and large-diameter requirements.
Drainage systemRainwater and wastewater discharge, strong resistance to ground subsidence.
Gas TransmissionGas and other medium transmission, reliable sealing.
Industrial sectorCorrosive medium transport 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) | 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 cost | 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 & Standards
Centrifugal casting methodThrough high-speed rotation of the mold, molten iron is evenly distributed to form 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. Future Prospects
With the advancement of urbanization and increased water quality requirements, the demand for ball mill cast iron pipes is rising in areas such as the renovation of old pipe networks and sponge city construction. Their environmental benefits (recyclable) and long-term cost advantages are becoming increasingly apparent.
