Lub qhov rooj hluav taws-tiv taus hnyav hnyav yog qhov ruaj khov heev, thiab nws tsis kam rau cua siab deformation kuj muaj zog heev. Nws yog hom qhov rooj nyiam rau ntau cov neeg nyob hauv siab. Cov profiles ntawm qhov hluav taws kub-resistant hnyav-lub qhov rooj yog ua los ntawm txhuas, strontium, tooj liab, magnesium, manganese thiab lwm yam alloys, uas muaj zoo zoo nyob rau hauv toughness.

fire rated steel door residential,hluav taws kub qhov rooj vs qhov rooj qub, hluav taws kub ntsuas qhov rooj ncaws phaj,fire rated steel door weight,fire rated steel door with louver,

hluav taws kub resistant qhov rooj manufacturers,fire rated steel door residential, fireproof lub qhov rooj, hluav taws pov thawj qhov rooj khoom,fire rated steel door weight,Hluav taws kub ntsuas qhov rooj thickness, steel qhov rooj x,fire rated steel door with louver,hluav taws nyob qhov rooj 90 feeb, 600mm hlau qhov rooj,

ntoo fireproof qhov rooj,fire rated steel door residential,hlau qhov rooj 36 x 80, hluav taws kub ntsuas qhov rooj ul, hluav taws kub ntsuas qhov rooj nyob