For more than a century, Dover Tank & Plate Co. has remained in the Lawless family, growing from the small steel shop founded by Neal and Bernard F. Lawless in 1922 into a fourth-generation company in Dover, Ohio. Its reputation rests on dependable, in-house work for industrial and commercial projects, with the family’s descendants still guiding the business today. The company is an AISC Certified Fabricator.
AISC Certified Fabricator (Building & Simple Bridge)
AWS D1.1
AWS D1.5
AWS D1.2
AWS D1.6
ODOT Level 1 Prequalified
Registration
Standard Iron WorksFounded in 1914, Standard Iron Works is a family-operated fabricator of structural steel and miscellaneous iron, owned and operated by four generations of the Dennebaum family. Its 65,000-square-foot manufacturing facility has produced fabricated and erected steelwork for projects ranging from residential beams to large school buildings, and the company has held AISC fabricator certification since 1996.SCRANTON, PA
J.A. McMahon, IncFounded in 1945, J.A. McMahon is a family-owned steel fabricator in Niles, Ohio, known for generations of experience and long-term customer relationships. Its AISC-certified operation produces structural steel for commercial and industrial projects, with a 32,000-square-foot facility supporting work from coordination through delivery. The company also established a civil engineering scholarship at Youngstown State University.NILES, OH
Zimmerman Steel & Supply Co. LLCFamily-owned and operated since 1995, Zimmerman Steel & Supply Co. LLC has built its Dalton, Ohio, business around custom metal fabrication for industrial customers. Its two facilities span more than 82,000 square feet and support projects ranging from small production work to large, complex jobs across the United States and Canada. The company’s welders hold AWS D1.1 and D1.5 certifications, with additional Canadian certification through CWB CSA W47.1.DALTON, OH
D&M WeldingRooted in a Moraine, Ohio manufacturing site with 175 years of local industrial history, D&M Welding has provided metal welding and fabrication services since 1974. The family-owned company became known for structural racks serving concrete block manufacturers across the United States and has since expanded into sheet-metal work, supported by a fiber laser and CNC press-brake equipment. D&M Welding is ISO 9001:2015 certified and remains under McCarroll family ownership alongside David Barger.MORAINE, OH