Maskell-Robbins, your one stop shop and most reliable source for HDPE pipe, custom and standard polyethylene pipe fittings, Polypipe, McElroy butt fusion machines, fusion equipment and technical service. Since 1975, Maskell-Robbins Inc. has been satisfying municipal, industrial, mining, gas, water utility, and telecommunication customers as a distributor and fittings fabricator of high density polyethylene (HDPE) pipe.