Gray cast
SL150 gray cast iron is used for less loaded parts such as machine bases, gearbox housings, sewage and sanitary cast iron. Gray castings SL200 and SL250 are used for water pipes and fittings, for brake drums of motor vehicles, as well as for parts of furnaces and boilers. Gray cast iron SL300 and SL350 are used for pressure pipes, for parts exposed to wear and high pressure, for parts of compressors, turbines and diesel engines.