Kev ua haujlwm ntawm kab kab

1.} kho: kab fittings tuaj yeem kho cov xov hlau, cov khoom siv los tiv thaiv lawv los ntawm kev cuam tshuam los ntawm sab nraud quab yuam.

2. Txuas: Kab fittings: Kab fittings tuaj yeem txuas ntau cov xov hlau, cov xaim hluav taws xob kom ntseeg tau ntawm lub zog hluav taws xob {}}

3. rwb thaiv tsev: kab fittings tuaj yeem ua haujlwm luv luv ntawm cov xaim thaum tiv thaiv cov xaim los ntawm sab nraud quab yuam {}

{4. coj-out: kab fittings tuaj yeem coj cov xov hlau tawm thiab cov xaim hluav taws xob kom tau raws li cov ntaub ntawv nkag ntawm {2}

5. branching: kab fittings tuaj yeem ua kom tau raws li cov kev faib tawm ntawm cov sib txawv .