Import request for Spring Steel South Africa

We are currently importing spring steel from China and are considering alternatives.
Grade - SAE6150 and SAE1075
Dimensions - The plate needs to fit a 20' shipping container.
Gauge/Thickness - 2mm to 16mm.
Total weigh - 26 tonnes.
Number of Containers - 3 to 4 a year
If you can help, please send me your e-mail so I can send you a detailed RFQ.