... end studsMaterial: Low Carbon Steels, A307 Gr.A and Gr.B, A449 Medium Carbon Steel, A354 Gr ... hardware co.,ltd.is a manufacturer and exporter specializing in fasteners and other industrial parts. The company has ... to provide you with a first class products and services.Presently,our main markets are South America ... are regularly Selling: bolts, screws, nuts, washers,studs and rods,bushing,flange,rings.