M&M Welding and Fabricators, Inc. is a woman owned, MDOT Certified Multi-Trade Mechanical Contractor that has been in business since April 1972, incorporated in the state of Maryland. Corporate headquarters is located at 8100 Cessna Avenue, Gaithersburg, MD. The company is owned, operated and managed with Ms. Carey Dove as President.
Current minority certifications held are Maryland Department of Transportation (MDOT MBE 03-386), Washington Metropolitan Area Transit Authority (WMATA DBE 1103-XXX-G) and Prince Georges County Government (07-3527). M&M Welding and Fabricators, Inc. is a complete turnkey mechanical contractor fully capable of accomplishing all phases of mechanical construction.
The Company has developed multiple mechanical specialties such as:
- Boiler repairs, replacements, installation, re-tubes, and rentals ranging in size from 220,000 pounds per hour industrial steam boilers to 100 horse power apartment heating units
- Preventative Maintenance Contracts: Boilers, Chillers, Pumps, Cooling Towers, Chemical Feed Systems, Combustion Analysis
- Burner Conversions – Gas/Oil
- Refractory, Brickwork and Insulation
- HVAC Retrofits
- Certified ASME Welding
- Power piping
- Installation, repairs, and rentals of chillers and generators
- Installation of underground steam systems and storage tanks
- Complete Steam and Hydronic Systems
- Backflow Testing
Our trained and qualified personnel work on a comprehensive variety of piping systems including Ricwil, Perma Pipe, Thermacor, Revanco, and Smith FRP.
M&M is fully licensed and certified to install a wide variety of fiberglass and steel lined storage tanks.
During our thirty-six (36) years in the mechanical construction business, M&M Welding and Fabricators, Inc. has been called upon to execute many complex projects both large and small. The complexity ranges from the highly technical requirements of ASME pressure welding to complete boiler heating plant renovations and rehabilitations.
We hold the following Certificates of Authorization from the American Society of Mechanical Engineers (ASME) and the National Board of Boiler and Pressure Vessel Inspectors (NBBPVI) qualifying us in most welding procedures.
- “PP” Pressure Piping
- “U” Pressure Vessels
- “H” Heating Boilers
- “R” Repair Stamp
- “S” Assembly of Power Boilers.
We are fully licensed and bonded in Maryland, Virginia and the District of Columbia.