Lub qhov rooj hluav taws steel yog tsim los ntawm steel ncej thiab lub qhov rooj steel nplooj. Cov qauv hlau tuaj yeem ua kom ntseeg tau tias nws tsis raug cuam tshuam rau kev cuam tshuam deformation thiab kev puas tsuaj rau sab nraud, thiab tuaj yeem siv tau ntev ntev yam tsis muaj kev hloov pauv.

https://ztfiredoor.com/16461.html

fire rated phab ntsa hatch,zawv zawg qhov rooj hluav taws qhov rooj,Hluav taws kub rwb thaiv tsev qhov rooj , qhov siab hluav taws kub qhov rooj ,insulated hluav taws nyob qhov rooj,pem hauv ntej qhov rooj hluav taws ntsuas,fire rated phab ntsa hatch,ob teev hluav taws ntsuas qhov rooj,zawv zawg qhov rooj hluav taws qhov rooj,txhim kho qhov hluav taws kub ntsuas qhov rooj,insulated hluav taws nyob qhov rooj,Therma tru 20 feeb hluav taws ntsuas qhov rooj,fire rated phab ntsa hatch,30 nti hluav taws kub ntsuas qhov rooj lowe’s,zawv zawg qhov rooj hluav taws qhov rooj,14 × 14 hluav taws nyob rau hauv vaj huam sib luag,insulated hluav taws nyob qhov rooj