| Business | Phone |
| Big Sky Welding 5231 La Corte Bonita, Concord 94521 | (925) 689-6301 |
| Field Welding Svc 156 Leonard Dr, Concord 94518 | (925) 890-0295 |
| Mel & Sons Inc 1780 Monument Blvd, Concord 94520 | (925) 825-9700 |
| Moose Metal 1038 Shary Cir # 7, Concord 94518 | (925) 676-6667 |
| Pat's Welding Svc 1122 Landini Ln, Concord 94520 | (925) 798-5384 |