Kev ua haujlwm ntawm cov yeeb nkab fittings

Cov yeeb nkab fittings yog cov khoom siv los txuas cov kav dej, tso cai rau ob lossis ntau dua cov kav dej sib txuas ua ke, yog li ua kom cov kua dej sib kis tau zoo hauv cov khoom siv. Feem ntau, cov yeeb nkab fittings raug ntsia ntawm ob qho kawg ntawm cov yeeb nkab kom yooj yim disassembly thiab txij nkawm. Cov yeeb nkab fittings tau siv dav hauv cov roj av, roj av, thiab tshuaj lom neeg kev lag luam.