o Established in 1975, O’Brien Steel Service has sustained a commitment to one overriding goal: Be Easy to Buy From. Today, our customers range from small job shops to the largest OEMs in the USA. Our vast inventory of carbon steel and large fleet of delivery trucks makes your buying process easy to get what you want, when you need it. Processing capabilities include oxy-fuel cutting, plasma cutting, laser cutting, forming, beveling, machining, blasting, and more. And our 400+ dedicated employees ensure service that’s professional, timely, and quality focused. With locations in Peoria, Milwaukee, and Wausau, we are ready to meet your most demanding requirements!