Flange npauj npaim valve yog tsuas yog siv nyob rau hauv industrial ntau lawm pipeline, nws lub luag hauj lwm tseem ceeb yog txiav tawm cov kev ncig ntawm nruab nrab nyob rau hauv lub pipeline, los yog kho qhov loj ntawm nruab nrab ntws nyob rau hauv lub pipeline. Flange npauj npaim valve yog dav siv hauv kev txuag dej engineering, dej kho, roj av, ch ...
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