Single type strainer (JIS F7121), Body made by cast iron, Filter made by zinced steel sheet, JIS standard We supply marine strainers to JAPAN for many years. Included Single type and Double type,Need to leak test, Body & Cover were made with cast iron of JIS G 5501 FC20, Filter made with zinced sheet of JIS G 3103 SS41, The other parts were made according to JIS G 5502 FCD450, JIS G 3101 SS41,JIS ...