Metal Service Centers
| Mike's Alunimum Industries (Orlando, FL)
Primarily Serving: Kissimmee, FL - Sanford, FL - Deltona, FL - Port Orange, FL |
| Milbank Winwater Works (Milbank, SD)
Primarily Serving: Sioux Falls, SD - Fargo, ND - Saint Cloud, MN - Minnetonka, MN |
| Milford Pipe & Supply (Hobbs, NM)
Primarily Serving: Odessa, TX - Midland, TX - Lubbock, TX - San Angelo, TX |
| Mill Man Steel (Spokane, WA)
Primarily Serving: Pasco, WA - Kennewick, WA - Yakima, WA - Missoula, MT |
| Mill Valley Splicing Co (Belchertown, MA)
Primarily Serving: Chicopee, MA - Springfield, MA - Worcester, MA - Manchester, CT |
| Millennia Metals (Rochelle Park, NJ)
Primarily Serving: Passaic, NJ - Paterson, NJ - Clifton, NJ - Wayne, NJ |
| Miller's Steel Div (Anniston, AL)
Primarily Serving: Birmingham, AL - Smyrna, GA - Marietta, GA - Auburn, AL |
| Mil-Source Alloy's (San Marcos, CA)
Primarily Serving: Vista, CA - Escondido, CA - Carlsbad, CA - Encinitas, CA |
| Mina Metals Co (South San Franci, CA) |
| Minglewood (Rockford, IL)
Primarily Serving: Janesville, WI - Elgin, IL - Hoffman Estates, IL - Schaumburg, IL |
| Mission Metals (Corona, CA)
Primarily Serving: Chino, CA - Riverside, CA - Chino Hills, CA - Yorba Linda, CA |
| Mitchell Industries (Mitchell, IN)
Primarily Serving: Bloomington, IN - Louisville, KY - Terre Haute, IN - Indianapolis, IN |
| Modesto Steel Inc (Modesto, CA)
Primarily Serving: Turlock, CA - Manteca, CA - Tracy, CA - Stockton, CA |
| Modular Container Systems Inc (Lavonia, GA)
Primarily Serving: Athens, GA - Greenville, SC - Dacula, GA - Roswell, GA |
| Monarch International (Chino, CA)
Primarily Serving: Chino Hills, CA - Ontario, CA - Pomona, CA - Yorba Linda, CA |
| Monticello Aluminum Co (Monticello, AR)
Primarily Serving: Pine Bluff, AR - Monroe, LA - Little Rock, AR - North Little Rock, AR |
| Moody's Investors Svc (Walnut Creek, CA)
Primarily Serving: Concord, CA - Pittsburg, CA - Castro Valley, CA - Berkeley, CA |
| Moore Soffit & Siding (Daytona Beach, FL)
Primarily Serving: Port Orange, FL - Palm Coast, FL - Deltona, FL - Sanford, FL |
| Morgan Pipe & Steel (Jena, LA)
Primarily Serving: Monroe, LA - Lafayette, LA - Baton Rouge, LA - Lake Charles, LA |
| Morrison Aluminum Construction (Cape Coral, FL)
Primarily Serving: North Fort Myers, FL - Fort Myers, FL - Port Charlotte, FL - North Port, FL |
| Motor City Pipe & Supply Co (Detroit, MI)
Primarily Serving: Dearborn, MI - Warren, MI - Dearborn Heights, MI - Royal Oak, MI |
| Mountain States Supply-Nrthrn (Layton, UT)
Primarily Serving: Ogden, UT - Salt Lake City, UT - West Jordan, UT - Sandy, UT |
| Ms Iron Works (Sun Valley, CA)
Primarily Serving: Burbank, CA - Glendale, CA - Newhall, CA - Los Angeles, CA |
| Mt Pleasant Supply (Mount Pleasant, MI)
Primarily Serving: Saginaw, MI - Lansing, MI - Grand Rapids, MI - Wyoming, MI |
| Mueller Industries Inc (Whiting, IN)
Primarily Serving: Hammond, IN - Gary, IN - Oak Lawn, IL - Chicago, IL |
