In the late 1990s, J.M. Brennan, Inc. only had three fabrication workers and less than 12 field installers. However, as a sign of the Milwaukee, Wisconsin-based mechanical contractor’s steady growth, ...

Many applications, usually involving either mounting parts or routing wiring and other materials, require holes to be drilled or punched into sheet metal. As with any other typical fabrication task, ...

Experience in stamping plants has suggested that there are considerable differences in the ability of different chromium-plated dies to form sheet metal. Earlier laboratory work indicated that ...