The Mandrel Group manufactures and rebuilds coiling mandrels at its McDonald, Ohio facility, where it describes more than 200,000 square feet of manufacturing space. The family-owned and operated company reports a combined 45 years of experience in mandrel manufacturing and rebuilding. Since its 2021 acquisition of Fessler Machine Company, it has continued Fessler’s hydraulic and gearing manufacturing tradition alongside its mandrel work.
The Mandrel GroupFamily-owned and operated in McDonald, Ohio, The Mandrel Group is a hands-on manufacturer serving the steel industry. Its 200,000-square-foot facility draws on a combined 45 years of experience to build and rebuild coiling mandrels in-house. Since acquiring Fessler Machine Company in 2021, the group has continued that company’s tradition while adding its proprietary rotary-distributor sealing technology.MCDONALD, OH
Mull Group, IncFounded in 1961 as a Wheeling machine shop, family-owned Mull Group now engineers, machines, casts and assembles critical equipment for rolling mills and other heavy industrial operations. Its four production facilities remain within eight miles of where the company began, bringing more than 200 machines, in-house mechanical engineering and Nail City Bronze—an Ohio Valley foundry pouring metal since 1877—under one local roof. The third generation of the Mull family took leadership in 2024.WHEELING, WV
Coil Processing Repair, IncServing industrial customers across the United States since 2004, Coil Processing Repair, Inc. is an Ohio-based repair and machining company known for bringing aging coil-processing equipment back into service. Its technicians draw on more than 100 years of combined experience in precision assembly and machining, with an in-house shop supporting repairs and rebuilds for industrial clients.ST MARYS, OH