| Ettevõtte nimi | Reg. kood |
|---|---|
| WELDIO OÜ kustutatud | 12869921 |
| WELVIO OÜ | 17564280 |
| WELDIT OÜ | 12673230 |
| WELDO OÜ kustutatud | 16592698 |
| WELLGIO OÜ | 16585830 |
| WELDERO OÜ (endine nimi osaühing Weldero) | 10165877 |
| WELDING OÜ | 12087791 |
| WELDUP OÜ | 12270785 |
| WELEDIN OÜ | 16827960 |
| WELDFOX OÜ | 16247085 |
| WELDBOR OÜ | 16735092 |
| WELDOG OÜ | 14643204 |
| WELDCOM OÜ | 11698682 |
| WELDER OÜ | 17308015 |
| WELDPRO OÜ | 14219587 |
| WELDME OÜ | 14086560 |
| WELDER OÜ kustutatud | 10336480 |
| WELDKON OÜ kustutatud | 14812121 |
| WELDON OÜ kustutatud (endine nimi Mushroom Army OÜ) | 11508397 |
| WELD WELDING WORLD.EE OÜ | 16075448 |
| NIARA OÜ (endine nimi Hingevalgus OÜ) | 10260937 |
| SSK WELDING OÜ | 14330161 |
| GSV WELDING OÜ | 11381206 |
| TP WELDING OÜ (endine nimi OpenWeb OÜ) | 11898671 |
| SAL WELDING OÜ | 16088072 |
| WELDES EHITUS OÜ | 11049021 |
| MEH WELDING OÜ | 12927771 |
| KN-WELDING OÜ | 17022715 |
| WELDING VISION OÜ | 12947710 |
| PRIMET WELDING OÜ | 12870410 |
| WELDING SOLUTIONS OÜ | 14672660 |
| TKK WELDING OÜ | 17401938 |
| WELDING MANAGEMENT OÜ | 14417554 |
| KOMI WELDING OÜ | 17408509 |
| WELDING CONSTRUCTIONS OÜ (endine nimi OÜ KURILANE) | 10233596 |
| TEBA WELDING OÜ | 14909719 |
| ALP WELDING OÜ | 12844826 |
| WELDING GROUP OÜ (endine nimi Osaühing Welding Grupp) | 10577522 |
| J-WELDER OÜ (endine nimi Reverato Group OÜ) | 14144010 |
| ESTFIN WELDING OÜ | 14534490 |
| VOLKER-WELDING OÜ | 14370019 |
| VVDS WELDING OÜ | 14143826 |
| KOLESNICHENKO WELDING OÜ | 17575791 |
| LT WELDING OÜ | 14768348 |
| WELDEX GROUP OÜ (endine nimi F.M Welding OÜ) | 14189484 |
| SP WELDING OÜ | 16136434 |
| CUSTOM WELDING OÜ | 16334571 |
| VIP WELDER OÜ | 11166057 |
| 3K WELDING OÜ | 17520034 |
| FINEST WELDING OÜ | 11521953 |