Cov qhov rooj hluav taws tau muab faib ua peb qib raws li lub sijhawm hluav taws kub. Lub sijhawm hluav taws kub ntawm Qib A steel qhov rooj yuav tsum tsis pub tsawg tshaj 1.5 teev; Lub sijhawm hluav taws kub ntawm Qib B steel qhov rooj yuav tsum tsis pub tsawg tshaj 1.0 teev; Lub sijhawm hluav taws kub ntawm Class C steel qhov rooj yuav tsum tsis pub tsawg tshaj 0.5 teev.

steel qhov rooj quotes,hluav taws kub qhov rooj vs qhov rooj qub, hluav taws kub ntsuas qhov rooj ncaws phaj,hlau qhov rooj b&q, kev ruaj ntseg hlau qhov rooj tsim,

Hluav taws kub resistant qhov rooj chaw tsim tshuaj paus, hluav taws kub resistant qhov rooj rau tsev, fireproof lub qhov rooj, hluav taws kub pov thawj qhov rooj,steel qhov rooj quotes,hluav taws kub ntsuas qhov rooj thickness,hlau qhov rooj b&q,hluav taws kub ntsuas qhov rooj 2 teev, hluav taws kub ntsuas qhov rooj 90 feeb,kev ruaj ntseg hlau qhov rooj tsim,

ntoo fireproof qhov rooj , hluav taws kub ntsuas qhov rooj nrog iav,steel qhov rooj quotes,hluav taws kub ntsuas qhov rooj ul, hluav taws kub ntsuas qhov rooj nyob