W. Maass (UK) Ltd are a manufacturer and stockholder of Stainless Steel, Duplex and Superalloy Pipe Flanges, serving the needs of the Oil, Petrochemical and Process related Industries.

Established in 1980 as a subsidiary to Wilhelm Maass GmbH & Co. KG, a leading European forgemaster, W. Maass (UK) Ltd have continually expanded facilities in St. Helens to become one the the UK's market leaders in the manufacture of flanges and subsea pipeline components.