| A M Welding | 406-258-2991 | 6950 Juniper Dr | Missoula | MT | 59802 |
| Bear Creek Log Homes | 406-763-4709 | 1660 Little Bear Rd | Gallatin Gateway | MT | 59730 |
| Bitterroot Precut Inc-Garland Homes | 406-642-3095 | 2172 US Highway 93 N | Victor | MT | 59875 |
| Building Specialties Inc Tank & Steel Plant | 406-248-5950 | 2003 Main St | Billings | MT | 59105 |
| C W Welding | 406-293-6712 | 1947 Hwy 2 West | Libby | MT | 59923 |
| Caird Steel Fabricator | 406-449-3695 | 1200 Boulder Ave | Helena | MT | 59601 |
| Colton Tower Consultants | 406-259-3362 | 2140 Ridgeview Dr | Billings | MT | 59105 |
| Curriers Certified Welding Inc | 406-752-2366 | 1623 Mt Highway 35 | Kalispell | MT | 59901 |
| Custom II Mfg | 406-586-6809 | 5601 Monforton School Rd | Bozeman | MT | 59715 |
| Custom Welding & Muffler | 406-257-4896 | 65-8th Av Wn | Kalispell | MT | 59903 |
| D & S Welding | 406-892-4004 | 290 Truck Rt | Columbia Falls | MT | 59912 |
| Donaldson Steel Fabrciation | 406-586-9211 | 705 Bridger Dr | Bozeman | MT | 59715 |
| Eagle Iron Works & Fabrication | 406-837-0006 | 2934 Mt Highway 209 | Bigfork | MT | 59911 |
| Earls Iron & Welding | 406-765-1373 | E Plentywood | Plentywood | MT | 59254 |
| Empire Steel Manufacturing Co | 406-252-0101 | 501 N 18th St | Billings | MT | 59101 |
| Felco Industries | 406-728-9100 | 3660 Grant Creek Rd | Missoula | MT | 59802 |
| Home Place The Or Dial | 406-727-4663 | 4300 2nd Ave N | Great Falls | MT | 59405 |
| Kodiak Industries | 406-388-7964 | 20959 Frontage Rd | Belgrade | MT | 59714 |
| Lesman Iron Works | 406-252-2803 | 411 N 18th St | Billings | MT | 59101 |
| Lindal Cedar Homes | 406-883-1200 | 87 Pine Cone Ln | Polson | MT | 59860 |
| Lindal Cedar Homes & Sunrooms Independent Dist | 406-755-7100 | 1725 Mt Highway 35 | Kalispell | MT | 59901 |
| Midland West Mfg Co Inc | 406-245-6204 | 2224 Minnesota Ave | Billings | MT | 59101 |
| North Side Welding | 406-442-5150 | 812 Chestnut St | Helena | MT | 59601 |
| North Valley Steel & Fabrication Inc | 406-892-3578 | 199 Brunner Rd | Columbia Falls | MT | 59912 |
| Northland Fabrication | 406-752-4886 | 3220-1 US Highway 93 S # 2 | Kalispell | MT | 59901 |
| Norwes Trailers | 406-257-5818 | 3445 US Highway 93 S | Kalispell | MT | 59901 |
| Pap's Enterprises | 406-293-4835 | 115 W 10th St | Libby | MT | 59923 |
| Rawlings Manufacturing | 406-728-6182 | 1750 Idaho St | Missoula | MT | 59801 |
| Rick's Welding | 406-862-7540 | 1355 Karrow Ave | Whitefish | MT | 59937 |
| Scott's Welding & Repair | 406-373-9235 | 5904 Twelve Mile Rd | Billings | MT | 59105 |
| Soares J E Inc | 406-388-6069 | 7093 Dry Creek Rd | Belgrade | MT | 59714 |
| Spark & & Arc Welding | 406-846-2304 | 604 Mitchell St | Deer Lodge | MT | 59722 |
| Specialty Iron Works | 406-452-3672 | 5 57th St S | Great Falls | MT | 59405 |
| Summit Manufacturing | 406-363-5237 | 340 Main St | Hamilton | MT | 59840 |
| Tw Welding | 406-646-7267 | 316 Faithful | West Yellowstone | MT | 59758 |
| Walker Manufacturing Inc | 406-827-4827 | 479 Prospect Creek Rd | Thompson Falls | MT | 59873 |
| Western Country Homes | 406-587-0444 | 8346 Huffine Ln | Bozeman | MT | 59715 |
