| ASTM B594 | Ultrasonic Inspection of Aluminum-Alloy Wrought Products. *NOTE* NGAS ASPL approval is required when testing is performed by a secondary source other than the primary mill. | Non-Destructive Testing |
| Superseded by: None | Superseded By: None | |
| Selected sector: AS | Date added: | |
| SupplierNumber | SupplierName | State | CountryName |
| 90048519 | AEROSPACE TESTING LAB INC | CT | United States |
| 90048601 | HOWMET AEROSPACE INC | OH | United States |
| 90051187 | Kaiser Aluminum/Chemical Company | WA | United States |
| 90043905 | MISTRAS GROUP | CA | United States |
| 90051777 | Mitchell Laboratories Inc | CA | United States |
| 90077007 | ND Testing Inc. | CA | United States |
| 90055777 | Weber Metals Inc. | CA | United States |