铸铁球形止回阀HQ45X微阻球形止回阀，HQ44X球型法兰单向阀
面议
铸铁球形止回阀HQ45X微阻球形止回阀，HQ44X球型法兰单向阀
面议铸铁球型单向阀HQ41X无磨损球形止回阀，球型法兰单向阀
面议铸钢蝶式单向阀H76H-PN16不锈钢蝶式止回阀，H76H-PN25铸钢止回阀
面议对夹不锈钢单向阀H74W-PN16不锈钢对夹旋启式止回阀，H74W-PN25铸钢对夹止回阀
面议碳钢对夹单向阀H71W-PN16铸钢对夹升降式止回阀，H71W-PN25不锈钢对夹止回阀
面议美标摇版法兰单向阀H44W不锈钢旋启式美标止回阀，H44W-150LB美标止回阀
面议H44H-16C铸钢止回阀H44H铸钢旋启式止回阀，铸钢摇版法兰单向阀
面议H44H-300LB美标止回阀H44H-300LB旋启式美标止回阀，美标摇版单向阀
面议美标铸钢单向阀H44H旋启式美标高压止回阀，H44H-150LB美标法兰止回阀
面议不锈钢法兰单向阀H44H国标不锈钢旋启式止回阀，H44H-16P摇版止回阀
面议H44H-64C铸钢止回阀H44H-64C铸钢高压法兰止回阀，美标高压单向阀
面议不锈钢法兰止回阀H41W不锈钢升降式止回阀，H41W-PN16不锈钢止回阀
面议