... 3.materials:cast iron,cast steel, Marine Globe Valve 1.JIS.DIN.APL.ANSI.GB standard2.BV ... main products include globe valve , SDNR valve, check valve , Hose valve , gate valve . down storm valve , butterfly valve , quick-closing valve , air vent head ... and other marine accessories, The main materials are cast iron . ductile iron . Cast steel , bronze , brass ...