Mechanical pipe joining, or grooving, is a technique pioneered during World War I. It has since become a viable joining method on utility and industrial piping applications when compared with welding, threading and flanging. A mechanical joint has four elements: the grooved pipe, the gasket, the coupling housings and the fasteners. The coupling housing encases the gasket and wraps around the circumference of the pipe groove to produce a leak-free seal.
Roll grooving is used in roughly 90% of grooved pipe applications and was originally developed for light or thin-wall pipe, which allowed for fast and economical means to mechanically join pipe. Roll grooving is now common with a wide variety of pipe sizes and wall thicknesses without sacrificing pipe joint performance or flow rate reduction.
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