Transfer car

We are looking for the complete design of industrial electrical transfer car with 20T capacity. Who have the knowledge in transfer car please let me know,
Technical details:

1. Dimensions of Platform of Trolley (Length x Width) : 4m x 2m

2. Material to be transfer : Steel Billets

3. Dimensions : 4m x 2m

4. Maximum weight of material : 20T

5. Length of Travel : 40 mtrs

6. Trolley Speed : 10-20 mpm

7. Temperature of material & Name of Material : 50deg C & Steel billets

8. Drawing for Ladle/ Scrap Bucket/ Slab Details : Flat bed of 4m x 2m

9. Existing Rail Center: 2mtrs

I will further share the technical details upon the contact