船用日標(biāo)法蘭鑄鐵截止閥/截止止回閥JIS F7305 F7306 F7307 F7308 F7377 F7388 F7309 F7310 F7310 船用法蘭鑄鋼截止閥/截止止回閥 JIS F7351 F7352 F7409 F7410 F7353 F7354 F7375 F7376 F7377 F7378 F7471 F7472 F7473 F7474 F7411 F7412 F7413 F7414,公稱壓力;PN5K 10K 16K 20K 30K40K,適用介質(zhì),海水,淡水,滑油,不高于300℃的水蒸汽。船用日標(biāo)法蘭青銅截止閥/截止止回閥JIS F7301 F7302 F7303 F7304 F7351 F7352 F7409 F7410 F7411 F7412 F7413 F7414