... standard 2.BV.ABS,CCS.XQC,DNV,ISO9001 3.materials:cast iron,cast steel, Marine Globe Valve 1.JIS.DIN.APL.ANSI.GB ... standard2.BV.ABS,CCS.XQC,DNV,ISO9001certificate 3.materials:cast iron,cast steel, brone Etc4.Pressure :0.5Mpa -6.0Mpa. DN: 15mm ... vent head and other marine accessories, The main materials are cast iron . ductile iron . Cast steel , bronze , brass and stainless steel , Pressure :0.5MPA ...