Tuam Tshoj pob valve zoo tsom xam: qauv yooj yim, zoo sealing thiab lwm yam

Tuam Tshoj pob valve zoo tsom xam: qauv yooj yim, zoo sealing thiab lwm yam

Pob valve yog cov khoom siv tswj cov dej uas nquag siv, nws cov qauv yooj yim, zoo sealing thiab lwm yam zoo ua rau nws siv dav hauv roj av, tshuaj, metallurgy, hluav taws xob thiab lwm yam lag luam hauv kev tswj dej. Kab lus no yuav txheeb xyuas qhov zoo ntawmTuam Tshoj pob valverau koj los ntawm kev pom kev tshaj lij.