... shank:smooth,ring 4.Short delivery time and best quality Super High Quality U -TYPE NAIL 1.material:Q195 wire rod2. ... boat nail, coil common nail and coil roofing nail etc. The items are widely used in Steel Furniture, Plastic-steel doorwindows, Air- ... , Architectural Decoration finishing, boiler, Auto Manufacture, Fixture of Steel plate plasterboard etc. Our factory can produce the screw nails ...