... ,water oil strainer,marine quick-closing valve, marine self-closing valve, marine cock, marine pipes,down storm valve,swing check valveMaterials:Ductile Cast Iron,Cast ... .4Mpa, 4.0MpaStandard: CB/T, GB, GB/T, CBM,ISO, JIS, DIN, ASTM, API ,ANSI,BSCertificate: CCS, ABS, BV, DBV, GL ...