The price ranges for different types of Cast Iron Round Bars can vary depending on various factors such as the specific grade of cast iron, dimensions (diameter and length), quantity, market conditions, and supplier pricing policies. Additionally, regional variations and availability of raw materials can also influence the prices. It's important to note that the following price ranges are estimates and may not reflect the current market prices. It's always recommended to obtain up-to-date pricing information from suppliers or manufacturers.

Here are approximate price ranges for different types of Cast Iron Round Bars:

1. Gray Cast Iron Round Bars:

- Price Range: $1.50 - $4.00 per kilogram

2. Ductile Iron (Nodular) Round Bars:

- Price Range: $2.00 - $6.00 per kilogram

3. Malleable Iron Round Bars:

- Price Range: $2.50 - $6.50 per kilogram

4. White Cast Iron Round Bars:

- Price Range: $2.50 - $7.00 per kilogram

5. Alloyed Cast Iron Round Bars:

- Price Range: $3.00 - $8.00 per kilogram

6. Abrasion-Resistant Cast Iron Round Bars:

- Price Range: $3.50 - $9.00 per kilogram

7. Heat-Resistant Cast Iron Round Bars:

- Price Range: $4.00 - $10.00 per kilogram

8. Ni-Hard Cast Iron Round Bars:

- Price Range: $4.50 - $11.00 per kilogram

9. High-Chromium Cast Iron Round Bars:

- Price Range: $5.00 - $12.00 per kilogram

10. High-Nickel Cast Iron Round Bars:

- Price Range: $5.50 - $13.00 per kilogram

11. Austenitic Cast Iron Round Bars:

- Price Range: $6.00 - $14.00 per kilogram

Please note that these price ranges are estimates and can vary depending on factors such as market conditions, specific grades, dimensions, and quantity. It's always advisable to consult with suppliers or manufacturers to obtain accurate and up-to-date pricing information based on your specific requirements.