| AWS D1.1 | Structural Steel Welding - Steel | Welding |
| Supercedes: None | Superceded By: None |
| Number | Name | State | Country |
| 90049518 | CLARKS PRECISION MACHINE & TOOL INC | TX | United States |
| 90071191 | DYNAMIC FABRICATION, INC. | CA | United States |
| 90125446 | Equipment and Supply Inc. | NC | United States |
| 90051610 | MAY TECHNOLOGY & MFG INC | MO | United States |
| 90052833 | SEYER INDUSTRIES INC | MO | United States |
| 90076390 | Steeldyne Industries dba ABC Sheet Metal | CA | United States |
| 90057898 | ULTRA TECH AEROSPACE INC | KS | United States |