Grooved Drums are a metallic drum shell that has grooves, which enhance its acoustical properties to provide a warmer and less harsh sound. The grooving can be a continuous spiral groove formed in the outside surface of the drum shell. The grooves can be formed with selected depths, widths, contours and frequencies in order to achieve the desired fundamental pitch, resonance and overtone suppression.

Grooved Fitting is a gasketed mechanical pipe fitting made of ductile iron that is clamped onto a groove in a pipe rather than screwed onto threads. It is mostly used in commercial applications on pipes larger than 1 1/2″ in diameter. Utilizing a grooved piping system is a versatile, economical and reliable way of installing piping for a variety of applications, which include fire protection, heating, ventilating and air-conditioning. Grooved fittings can be made in different kind of materials like iron ductile, iron malleable, carbon steel and stainless steel.