Wood Screws are mainly used for: environmental protection equipment, medical equipment, communication equipment, power facilities, electronic products, instrumentation, food machinery, petrochemical, ship assembly, pump valve piping, building curtain wall, open air, sports facilities, outdoor decoration, etc. Self -Tapping Screw material selection principle: The selection of stainless steel material is mainly considered from the following five aspects. Scope of application of Wood Screws 1. The mechanical properties of stainless steel screw materials, especially the strength requirements; 2. The requirements of the working conditions on the corrosion resistance of the material; 3. The working temperature on the heat resistance of the material (high temperature 4. Requirements for material processing properties in terms of production technology;