船用日标法兰铸铁截止阀/截止止回阀JIS F7305 F7306 F7307 F7308 F7377 F7388 F7309 F7310 F7310 船用法兰铸钢截止阀/JIS F7351 F7352 F7409 F7410 F7353 F7354 F7375 F7376 F7377 F7378 F7471 F7472 F7473 F7474 F7411 F7412 F7413 F7414,公称压力;PN5K 10K 16K 20K 30K40K,适用介质,海水,淡水,滑油,不高于300℃的水蒸汽。船用日标法兰青铜截止阀/截止止回
阀JIS F7301 F7302 F7303 F7304 F7351 F7352 F7409 F7410 F7411 F7412 F7413 F7414