Dee Cramer Inc. has purchased all the assets related to the HVAC fabrication division of National Sheet Metal Co. located in Saginaw, Mich.

Terms were not disclosed.

Matthew D. Cramer, president of Dee Cramer Inc., said the purchase would enable the company to expand its operations and employment.

The headquarters and main operations of Dee Cramer will remain in Grand Blanc, Mich.

National Sheet Metal Co. is owned by National Roofing and Sheet Metal Co. Inc. in Burton, Mich. As part of the agreement, National Roofing will keep the architectural side of the sheet metal business operated by John Gingerick.

Gary Sova, president of National Roofing, said the agreement will allow each company to focus on what each does best, providing a better product to their customers. National Roofing and Sheet Metal Co. Inc. has been in business since 1952.

Dee Cramer also has offices and shops in Lansing and Wixom, Mich. Founded in 1937, it is now in its third generation. The company serves industrial, commercial, institutional and residential clients.