Teamwork is critical to McKey's success.
About McKey perforating
Nortmann-Duffke letterhead; a glimpse into McKey's past.

The nation’s oldest and most experienced perforating company

You need more than machines to perforate materials to precise tolerances and without stretching and distortion. You need trained, experienced, quality-minded metal workers — like our ace team at McKey Perforating.

We’ve equipped them with rock-solid production gear of unexcelled precision and versatility. Our 94,000 -square-foot facility in New Berlin, Wisconsin, contains the most advanced data-guided machinery for perforating and slitting coil, sheet and plate materials. McKey Perforating, a division of Diamond Manufacturing Company a wholly-owned subsidiary of Reliance, Inc., was instrumental in establishing of the Industrial Perforators Association.

We have the best perforating crew anywhere — highly skilled, talented workers who arrive for their shifts eager to punch the daylights out of sheets of just about any material with unerring precision. They’re committed to our ideal of perforation perfected.

Because our various value-added services include design and engineering, we can take your concept to completion, regardless of how intricate or complicated it may be, with highly competitive pricing.

In addition to our customizing capabilities, we maintain a vast inventory of already perforated sheets, in a large range of hole patterns and gauges, ready for immediate shipment. We also offer stocking program opportunities to meet your just-in-time needs.

McKey operators strive for perfection with every job. Close up of human hands in protective gloves on perforated metal sheetMcKey operators strive for perfection with every job. Close up of human hands in protective gloves on a perforated metal sheet

Our mission: A focus on value

As a world-class supplier of perforated products, we at McKey Perforating place highest priority on continual customer satisfaction, product performance and safety, through training, teamwork, continuous process improvement and business integrity.

McKey's current location, since 1972.

We’re America’s most experienced perforating company

We can say that with confidence because McKey Perforating is the nation’s oldest perforating company. We trace our roots to pre-Civil War days: James Buchanan was president and America consisted of only 31 states when Aitcheson Perforating Company was founded in Chicago in 1860. Nortmann-Duffke Foundry Co. purchased and moved the company to Milwaukee in 1910. It relocated once again, in 1972, to its current 94,000-square-foot site in New Berlin, Wisconsin - 19 years after Douglas E. McKey purchased the company and renamed it McKey Perforating Company. In 1982, the acquisition of Toepfer and Sons Inc., established in 1855, unequivocally made McKey Perforating the country’s most venerable perforating company. Major building expansions took place in 1994 and in 2023 to accommodate growth and installation of new equipment. 

The acquisition of McKey Perforating Co. in 2012 by Reliance Inc. through its subsidiary, Diamond Manufacturing Company, made McKey an integral part of a global raw material and metals fabricating network consisting of more than 300 locations in 41 states and 10 countries abroad. Put the power and resources of McKey to work on your next job.

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McKey Perforating estimators and engineers collaborate in product design