Description
Self Drilling Screw for concrete roof tiles either the flat and the wave sheet , can screw directly without pre-drill , suitable to use with the thickness less than 3.2mm. steel purlin, the size #8 is use for the concrete roof tiles only.
Self-Drilling-Screw-For-Concrete-Roof-Tiles-Size-1
Self-Drilling-Screw-for-Concrete-Roof-Tiles-Size-2
