Cast iron counterweight advantages:

1. Cast iron counterweights are stronger and more durable than concrete counterweights.

2. Cast iron counterweights can be machined to any desired shape.

3. Cast iron counterweights are less likely to crumble or crack over time.

4. Cast iron counterweights have a higher resistance to wear and tear.

5. Cast iron counterweights are recyclable.

6. Cast iron counterweights are not susceptible to freeze-thaw cycles.

7. Cast iron counterweights are not affected by chemicals or other environmental factors.

8. Cast iron counterweights can be painted or coated for additional protection.

9. Cast iron counterweights are available in a variety of sizes and weights.

10. Cast iron counterweights are more expensive than concrete counterweights.