Skip to content
Customer Support Call 1.908.412.8300

Updates

Gainline Acquires M&M International

January 8, 2025

Jeff Robertson named CEO of M&M, a leading supplier of stainless-steel tubing 

January 21, 2025 

STAMFORD, Conn., January 21, 2025 /PRNewswire/ — Gainline Capital Partners (“Gainline”) announced today that it has acquired M&M International (“M&M”), a leading manufacturer of precision-engineered stainless-steel tubing, primarily for the  medical device end market. M&M is headquartered in South Plainfield, NJ. 

“We are excited to build on M&M’s 30-year track record of supplying customers with high-quality products,” said Allan  Weinstein, Managing Partner at Gainline. “M&M is well positioned for accelerated organic growth and we plan to pursue  strategic add-on acquisitions to further advance its position in the market.”  

In conjunction with the acquisition, Jeff Robertson was appointed as Chief Executive Officer. Robertson is an experienced  leader in the medical device manufacturing industry and was most recently the Chief Operating Officer of Solesis. Joining  Robertson are Ed Graf as Chief Financial Officer, and Chris Pleibel as Chief Commercial Officer. “Jeff, Ed, and Chris bring a  wealth of experience and proven track records of scaling businesses,” said Rob Dellinger, Principal at Gainline. “We are thrilled  

to partner with them in the next stage of M&M’s growth.”  

M&M is a leading producer of 304 and 316-grade stainless steel small-diameter tubing for medical devices and other high  precision applications. M&M also recently launched its 17-7 stainless steel product offering, further expanding its market  position. “We are pleased to introduce 17-7 as part of our product portfolio,” said Robertson. “This expansion reinforces our  commitment to providing high-quality, specialized solutions that address the evolving needs of our customers. By broadening  our capabilities, we are positioned as an even stronger partner in supporting their critical applications.” 

The acquisition of M&M comes at a particularly active time for Gainline as it deploys its second Fund. Last week the firm announced a majority investment in IMS Technologies, a leading audiovisual and systems integration company based in  Pennsylvania. 

About Gainline Capital Partners 

Gainline Capital Partners is a private equity firm that invests in U.S.-based middle-market companies. The firm invests in  established, growth-oriented companies prioritizing first institutional capital partnership opportunities, helping execute  management teams’ vision, driving sustainable growth, and creating long-term value. For more information, visit  www.gainlinecapital.com. 

About M&M International 

Founded in 1993 and headquartered in South Plainfield, NJ, M&M manufactures precision-engineered small-diameter stainless  steel tubing (SDSST) for mission-critical medical device applications. With a diverse product offering, M&M offers high quality  tubing at attractive price points. For more information, visit the Company’s website at https://mmtubing.com. 

  • For years, M&M has supported my company, providing resources, high value material and top-notch quality.

    Chris from Indiana

  • Matt has been fantastic! Very responsive and accommodating. Also: great attention to detail. Of course, I know he has a lot of people dedicated to supporting him, so the effort and compliments are certainly to the entire team.

    Rich From Massachusetts

  • We’ve relied on M&M for years for large-scale stainless steel tubing supply. Their reliability, quality, and attention to detail are unmatched, making them an essential partner for our business.

    Daniel from California

  • The recent addition of our second inventory location in Costa Rica strengthens M&M’s global tubing supply chain by reducing risk, mitigating tariff exposure, and improving delivery times for our growing international customer base.

    2025 was an exciting year for M&M, and 2026 will bring even more capabilities, expanded capacity, and exciting announcements.

    Chris Pleibel, CCO M&M

  • M&M Tubing are very responsive, cooperative, and great partners to our manufacturing in Connecticut. I have come to rely on them as trusted partners to our business.

    Jeff from CT

  • Beginning with Matt, you have all been a breath of fresh air working with us regarding our predicament. I personally have enjoyed our wonderful business partnership for well over 30 years (beginning with Grace!), and you have really become a critical asset for our success. What a great team you have!

    Rich From Massachusetts

  • We trust M&M for all our stainless-steel tubing needs. No matter how large or small the order is, they deliver on time and maintain excellent quality. Their professionalism and consistency make them an invaluable part of our supply chain.

    Jason from California

  • How comforting it is to be supported by a quality outfit like M&M. M&M culture is customer-centric which is something that a lot of companies struggle with in their quest to trim costs.

    Rich From Massachusetts

  • We have worked with this amazing team since 2009. Not only does this team have a quick turnaround on quote request, but they have some of the best pricing and lead times we have seen. They have earned our continued business. Looking forward to the years to come.

    Shannen H., Michigan

  • We’ve been a loyal customer of this tubing company since 1999, and their products have consistently delivered exceptional quality and durability through every project. From seamless performance to reliable support, they’ve never let us down over the decades. Highly recommend them for anyone needing top-tier tubing solutions!

    Cole G from Ohio

  • The quality and consistency of M&M material is commendable, and their pricing on higher production volumes cannot be beaten! Additionally, every contact I have interacted with has been knowledgeable, efficient and an overall pleasure to work with.

    Stephen from CT

  • M&M has been a great company to work with. Their customer service is top notch. They offer a variety of solutions for problems you come to them with. Happy to be a partner of theirs!

    Matthew Brenno, Marshall Manufacturing