Rotationally cast pump housing

摘要

A rotationally cast molded article, such as a pump housing or a tank liner, is disclosed. The molded article has reinforced access openings which form flanges. The flanges are reinforced by embedded metal plates having an array of threaded metal sleeves which serve to mount the plates in the mold and which serve as threaded connectors for flanged fittings associated with the access openings.