www.impact-net.org www.ironworkers.org MORE OWNERS TRUST US WITH THEIR PROJECTS BECAUSE OUR CONTRACTORS AND WORKFORCE ARE SECOND TO NONE. 4,000 Contractors. 157 Training Centers. 6,941 Certifications in 2018. 20,143 Certified Ironworker Welders. 19,885 Apprentices and Trainees. 90 million invested annually on SAFETY. 130,000 lronworkers and billions in contracts for the most recognizable projects on earth. Ironworkers. SAFETY. QUALITY. PRODUCTIVITY. There are literally thousands of reasons to put your trust in lronworkers.