1. Lub tswv yim thiab hom purlins
Purlins xa mus rau ib hom kab rov tav overhead pas nrig siv los txhawb lub ru tsev lossis phab ntsa, ua lub luag haujlwm kho thiab txhawb nqa. Raws li kev siv thiab cov ntaub ntawv sib txawv, purlins tuaj yeem muab faib ua ntau hom xws li ntoo, aluminium alloy, steel, thiab lwm yam. Ntawm lawv, ntoo purlins tau dav siv, thiab aluminium alloy purlins tau maj mam hloov hlau thiab galvanized hlau purlins.
2. Purlin loj specifications
Purlins ntawm txawv specifications yog haum rau ntau hom khoom siv hauv tsev. Feem ntau hais lus, qhov ntev thiab tuab ntawm purlins yog cov ntsiab lus tseem ceeb. Cov nram qab no feem ntau siv purlin loj specifications:
1. Ntoo purlins: Feem ntau specifications yog 40x60mm, 30x50mm, 25x50mm, thiab lwm yam.
2. Aluminium alloy purlins: Feem ntau specifications yog 40x80mm, 30x50mm, 20x40mm, thiab lwm yam.
3. Hlau purlins: Cov kev qhia tshwj xeeb muaj xws li 30x50mm, 40x60mm, 25x50mm, thiab lwm yam.
