Tuy có r?t nhi?u ?u ?i?m, nh?ng t?m grating b?ng thép v?n còn m?t s? nh??c ?i?m còn t?i nh?:Pultruded FRP grating includes continual glass strands encased in resin and wrapped in a surfacing veil which guards the fibers and enables resin to saturate the outermost part of the bar together with penetrate in between the glass fibers. This makes su