Excel Metal And Engineering Industries offers brass round microwave guide. Excel Metal And Engineering Industries also offers different microwave products including Microwave instruments, components, lab kits, Waveguide Antennas and others. Brass round microwave guide are used in different industries that include sugar, breweries, offshore, oil plants and others. Waveguide Type EIA Number WC-281 comes with inside diameter of 7.142 cms and outside diameter of 7.473 cms, Frequency range is from 2.83 to 3.88 GHz. Apart from brass, round microwave guides are made from copper.