We are able to provide you with the billets from 1 series to 7 series, such as 2030, 2007, 5083, 6061, 6063, 6082 and 7075We do specifications in the following diameters:1. 3.5"/89 mm; 2. 4"/101mm; 3. 5"/127mm; 4. 5.5"/140mm; 5. 6" /152mm; 6. 7"/ 178mm; 7. 8"/203mm; 8. 9"/229mm; 9. 10"/254mm; Status: Casting; The above alloy billets have the following characters:1. Microscopic Structure Qualified. 2. Adequately homogenized. 3. Surface Detection Accomplished.We can manufacture aluminum alloy billets or bars according to the requirements provided by our customers.