P.I. CASTINGS LTD of Altrincham, Cheshire, who celebrate their 40th Anniversary this year, are major Investment Casting Suppliers to Engine and Airframe makers and also to many Aerospace Systems and Electronic equipment manufacturers. Customers include all the major U.K. Aerospace Companies and many major Companies in Europe and the U.S.A. Investment castings are used in all all types of industries, whether aerospace or commercial engineering — for any components where near nett shape castings can save weight and production costs and allow complex design features to be readily reproduced.