| Aircraft Welding & Mfg Co Inc | 860-296-8835 | 154 Elliott St E | Hartford | CT | 06114 |
| All Phase Welding | 860-747-9880 | 35 Forshaw Ave | Plainville | CT | 06062 |
| Alloy Welding & Manufacturing Co Inc | 860-582-3638 | 233 Riverside Ave | Bristol | CT | 06010 |
| All-State Welding Co Inc | 860-953-9619 | 946 New Britain Ave | W Hartford | CT | 06110 |
| Bouras Nicholas J Inc | 860-621-9158 | 176 N Main St | Southington | CT | 06489 |
| C & M Engineering | 860-243-8226 | 26 Jerome Ave | Bloomfield | CT | 06002 |
| Capitol Steel Of Hartford Inc | 860-289-2707 | 121 Connecticut Ave | South Windsor | CT | 06074 |
| Central Stair & Rail | 860-267-9892 | 968 Middletown Rd | Colchester | CT | 06415 |
| Cfr Welding | 860-647-1917 | 11-R Tolland Tnpke | Manchester | CT | 06040 |
| Charlton Corp | 860-289-5461 | 602 Tolland St | East Hartford | CT | 06108 |
| Churyk Stefan M | 860-355-1777 | 533 Danbury Rd | New Milford | CT | 06776 |
| Coastal Stell Corp | 860-859-1200 | 535 Hartford Rd | Salem | CT | 06420 |
| Collins & Jewell Co Inc | 860-887-8813 | 43 Wisconsin Ave | Norwich | CT | 06360 |
| Connecticut Building Specialties Inc | 860-658-4343 | 1 Mall Way | Simsbury | CT | 06070 |
| Daigles Welding Service | 860-763-0596 | 8 Dust House Rd | Enfield | CT | 06082 |
| Daves Welding | 860-526-5059 | 2 Kirtland St | Deep River | CT | 06417 |
| Drakes Welding Service | 860-535-3915 | 30 Taugwonk Spur | Stonington | CT | 06378 |
| Dyco Industries | 860-289-4957 | 229 S Satellite Rd | South Windsor | CT | 06074 |
| Equipment Works | 860-585-9686 | 575 Broad St | Bristol | CT | 06010 |
| Flashback Welding | 860-738-1122 | 88 Rowley St | Winsted | CT | 06098 |
| Flexonics Metal Hose & Expansi | 860-582-5822 | 348 Sonstrom Rd | Bristol | CT | 06010 |
| Fox Steel Co The | 860-247-6756 | 312 Boston Post Rd Orang | Hartford | CT | 06106 |
| Grace Welding & Metalcrafts Inc | 860-246-8135 | 1229 Albany Ave | Hartford | CT | 06112 |
| Griff Welding & Fabrication | 860-292-1972 | 288 North St | Windsor Locks | CT | 06096 |
| Gulf Manufacturing Inc | 860-529-8601 | 645 Cromwell Ave | Rocky Hill | CT | 06067 |
| Hillside Industries | 860-632-1116 | 1385 Newfield St | Middletown | CT | 06457 |
| Hoznor Jim Welding & Fabricati | 860-443-0894 | 101-R Blinman St | New London | CT | 06320 |
| International Bridge & Iron Co | 860-953-6550 | 90 Day St | Newington | CT | 06111 |
| Jarosz Welding Co | 860-296-5517 | 554 Ledyard St | Hartford | CT | 06114 |
| Jeff Mfg Inc | 860-482-1387 | 679 Riverside Ave | Torrington | CT | 06790 |
| Kenn Welding | 860-647-1934 | 346-B Adams St | Manchester | CT | 06040 |
| Kens-Trailer Manufacturing Co | 860-828-3564 | 1114 Farmington Ave | Kensington | CT | 06037 |
| M & R Welding & Fabrication | 860-349-2325 | 11-C Old Indian Trl | Middlefield | CT | 06455 |
| Mullen Welding Service | 860-763-2880 | 7 Moody Rd | Enfield | CT | 06082 |
| National Eastern Corp | 860-747-3700 | 75 Neal Ct | Plainville | CT | 06062 |
| P & G Steel Fab Co | 860-665-1335 | 690 Main St | Newington | CT | 06111 |
| Paterson Manufacturing | 860-526-8292 | 22 Denlar Dr | Chester | CT | 06412 |
| Paul Welding Company Inc | 860-229-9945 | 157 Kelsey St | New Britain | CT | 06051 |
| Pepin Welding & Iron Works | 860-582-1852 | Old Waterbury Rd | Bristol | CT | 06010 |
| R V & Son Welding | 860-628-5848 | 455 Old Turnpike Rd | Southington | CT | 06489 |
| Rawson Manufacturing Co | 860-928-4458 | Quaddick Rd | Thompson | CT | 06778 |
| Recor Welding Co | 860-224-2681 | 189 Newington Ave | New Britain | CT | 06051 |
| Reliable Welding & Fabricat | 860-749-3977 | 85 North St | Enfield | CT | 06082 |
| Rob-Jon Indus Inc Mtl Fabrctr | 860-379-0587 | 100 Whiting St | Winsted | CT | 06098 |
| Royal Welding Co Inc | 860-232-5255 | 50 Francis Ave | Hartford | CT | 06106 |
| Shepard Steel Co Inc | 860-525-4446 | 110 Meadow St | Hartford | CT | 06114 |
| Sound Construction & Eng Inc | 860-243-1428 | 522 Cottage Grove Rd | Bloomfield | CT | 06002 |
| Stace Welding | 860-623-2547 | Old Depot Hill Rd | Enfield | CT | 06082 |
| T & T Structural Inc | 860-721-1115 | 1 Dividend Rd | Rocky Hill | CT | 06067 |
| Topper & Griggs Inc | 860-522-1332 | 339 Cooke Plainville | Hartford | CT | 06106 |
| Topper & Griggs Inc | 860-747-5737 | 339 Cooke St | Plainville | CT | 06062 |
| Torrington Metal Products Inc Business Office | 860-482-8566 | 400 Riverside Ave | Torrington | CT | 06790 |
| Viking Enterprises | 860-440-0728 | 381 Rope Ferry Rd | Waterford | CT | 06385 |
