Plug: It is a kind of mechanical fastener, and its function is sealing. The alias of the plug is called screw plug, plug, and plug is used in water, oil, steam and other media. According to the different threads: metric, imperial, American a) According to the different shapes: hexagon socket plug, outer hexagon plug, taper thread plug, taper thread plug, deer hydraulic, manufacturing square plug b) According to the material, it is divided into plastic plug, cold plug, 45# plug, stainless steel plug, copper plug c) According to different surface treatments: blue, galvanized, nickel-plated, chrome-plated Metric specifications: M8-M50 Inch specifications: 1/16, 1/8, 1/4, 3/8, 1/2, 3/4...2" Material: carbon steel, alloy steel SCM435, hardness: HRC36-43, SUS304 Main applications: pump valves, hydraulics, machinery, etc.
