| Specification | ProcessDescription | Category | SpecLimits |
| AWS D1.1 | Structural Steel Welding - Steel | Welding | Limits: Limited to GSE Hardware only. Class B or lower, Alloy Groups I, II & IV only |
| AWS D1.2 | Structural Welding - Aluminum | Welding | Limits: Limited to GSE Hardware only. Class B or lower, Alloy Groups I, II & IV only. |
| AWS D17.1 | Fusion Welding for Aerospace Applications | Welding | Limits: Limited to GSE Hardware only. Class B or lower, Alloy Groups I, II & IV only |