GB/T1953-2008船用低压外螺纹青铜截止止回阀GB/T1953-2008
面议GB/T1953-2008船用低压外螺纹青铜截止止回阀GB/T1953-2008
面议GB/T1853-2008船用法兰铸钢舷侧截止止回阀GB/T1853-2008
面议GB/T1241-2008船用外螺纹锻钢截止止回阀GB/T1241-2008
面议GB/T596-2008船用外螺纹青铜截止止回阀GB/T596-2008
面议GB/T591-2008船用法兰铸铁截止止回阀GB/T591-2008
面议GB/T588-2009船用法兰青铜截止止回阀GB/T588-2009
面议GB/T585-2008船用法兰铸钢截止止回阀GB/T585-2008
面议JISF7474船用日标20k法兰直角铸钢截止止回阀JISF7474
面议JISF7473船用日标20k法兰直通铸钢截止止回阀JISF7473
面议JISF7472船用日标10k法兰直角铸钢截止止回阀JISF7472
面议JISF7471船用日标10k法兰直通铸钢截止止回阀JISF7471
面议JISF7414船用日标16K法兰直角青铜截止止回阀JISF7414
面议