good price and quality Self Drilling Screws With Wings Brushed Forming
The so-called conventional good price and quality Self Drilling Screws With Wings are screws that can be tapped by themselves. The difference between this screw and the general screw is that a suitable screw hole needs to be punched in advance when screwing the screw, while this screw does not need a screw hole, and can realize self-tapping while screwing in, thus greatly saving installation. steps and time. So do you know the drawing and forming of this screw?
ADD.: Gongzi Village Industrial Zone, Longyan County, Hebei Province