Lub hollow lub qhov rooj yog feem ntau ua los ntawm cov duab duab lossis pob tw (nruab nrab-tuab fiberboard) nrog daim nyias nyias nyias lossis npog. Lub sab hauv ntawm lub qhov rooj yog qhov tseem ceeb hollow, nrog tsuas yog ib qho qauv nyias thiab cov qauv txhawb nqa tuav lub qhov rooj ua ke. Hollow cov qhov rooj feem ntau yog siv los ua cov qhov rooj sab hauv nyob hauv tsev nyob hauv vaj tsev nyob, qhov chaw uas lawv tau ceev ntiag tug thiab lub suab nrov.
Lub qhov rooj steel, ntawm qhov tod tes, yog ua los ntawm cov hlau lossis lwm yam hlau alloys, uas ua rau nws muaj zog dua thiab muaj zog dua li lub qhov rooj hollow. Cov qhov rooj steel feem ntau yog siv rau sab nrauv cov qhov rooj hauv cov tuam tsev lag luam, vim tias lawv muab kev nyab xeeb zoo, huab cua tsis kam, thiab hluav taws kub tiv thaiv.
Ntxiv rau lawv cov khoom siv kev tsim kho sib txawv, cov qhov rooj steel thiab hollow qhov rooj kuj sib txawv hauv lawv cov qauv tsim. Cov qhov rooj hlau feem ntau muaj cov txheej txheem tuab tuab, cov khawm khawm, thiab xauv mab tawj, uas ua rau lawv tiv taus ntau dua. Lawv kuj tseem tuaj yeem muaj cov ntaub ntawv rwb thaiv tsev sab hauv qhov rooj nws tus kheej los txhim kho kev txuag hluav taws xob thiab txo cov suab sib kis. Hollow lub qhov rooj, ntawm qhov tod tes, muaj cov qauv yooj yim nrog cov khoom siv tsawg dua thiab feem ntau siv rau lawv lub cev thiab cov txiaj ntsig zoo.
Zuag qhia tag nrho, lub ntsiab sib txawv ntawm lub qhov rooj hollow thiab qhov rooj hlau yog lawv lub zog, kav ntev, thiab npaj siv. Yog tias koj xav tau lub qhov rooj uas muaj kev tiv thaiv kev ruaj ntseg zoo tshaj plaws thiab huab cua tiv thaiv, lub qhov rooj steel yog qhov kev xaiv zoo. Yog tias koj xav tau lub qhov rooj yooj yim sab hauv rau lub tsev nyob, lub qhov rooj hollow yuav muaj qhov txaus.
Yog tias koj xav paub ntau ntxiv txog peb cov khoom siv hluav taws kub, thov hu rau peb ntawm Alibaba https://dljfz.en.alibas.com/kallyoferliist.0.4d611f5deodayq
