1. Channel steel purlins
Channel steel purlins tau muab faib ua cov channel zoo tib yam steel purlins thiab lub teeb channel steel purlins (ib daim duab 1). Ordinary channel steel purlins yog tuab dua hauv qhov profile, yog li lawv lub zog tsis tuaj yeem ua tiav thiab lawv siv cov hlau ntau dua. Txawm hais tias lub teeb channel steel purlins tau zoo dua qub channel steel purlins, lawv tseem tsis zoo.
2. Lub kaum sab xis steel purlins
Lub kaum sab xis steel purlins (b hauv daim duab 1). Ordinary lub kaum sab xis steel purlins yooj yim kom tau, tab sis tsis zoo rigidity thiab siv ntau hlau. Lawv tsuas yog haum rau cov xwm txheej me me, purlin spacings thiab loads.
3. Ua ke channel steel purlins
Combined channel steel purlins yog welded los ntawm ob lub kaum sab xis steels (c hauv daim duab 1). Lawv siv cov hlau tsawg dua li cov hlau zoo tib yam, tab sis cov khoom siv vuam yog loj. Lawv tsim nyog rau cov xwm txheej nrog spans Tsawg dua lossis sib npaug li 4m.
4. Ua ke Z-puab steel purlins
Ua ke Z-zoo li tus steel purlins zoo ib yam li ua ke channel steel purlins thiab tseem welded los ntawm ob lub kaum sab xis steels (d hauv daim duab 1). Thaum lub ru tsev nqes hav kuv Ntau tshaj los yog sib npaug rau 1/3, nws yog tsim nyog ntau tshaj li cov channel steel seem nyob rau hauv cov nqe lus ntawm quab yuam.
5. Kub dov nyias-walled H-zoo li tus hlau thiab high-frequency welded nyias-walled H-zoo li tus steel purlins
Kub dov nyias-walled H-zoo li tus hlau thiab high-frequency welded nyias-walled H-zoo li tus hlau (txog no hu ua "thin-walled H-shaped steel") yog ib hom tshiab ntawm lub teeb steel (e hauv daim duab 1) , nrog rau qhov zoo ntawm nyias lub vev xaib, zoo bending txhav, kuj kaw lub sij hawm ntawm inertia nyob rau hauv ob lub ntsiab axis cov lus qhia, thiab ncaj flange daim hlau uas yooj yim mus cuag.
