The tube cap is mainly composed of two parts

The tube cap is mainly composed of two parts  

The tube cap is composed of two parts: rotating elliptic sphere and cylindrical straight section.  The elliptic cap with the ratio of the length to the short axis of the rotating elliptic spherical bus of 2.0 is conventionally called the standard elliptic cap.  The mechanical properties of oval caps are inferior to those of hemispherical caps, but better than those of disc caps.  Because the height of oval cap is between hemispherical and disc cap, the requirements of stamping equipment and mold, manufacturing difficulty between the two, that is, easier than hemispherical cap, more difficult than disc cap.  Oval pipe caps are widely used in medium and low pressure vessels due to their good comprehensive performance.  In recent years, it is convenient to manufacture large diameter oval pipe cap because of spinning technology.  Other names for pipe caps: pipe caps, plugs, caps, pipe caps, bulkheads.  

Use of pipe cap: pipe fittings welded to pipe end or mounted on pipe end external thread to cover and block pipe.  Used to seal the pipeline, the function is the same as pipe blocking.  The blind plate is similar in form, except that the blind plate is removable plug, while the welded pipe cap is not removable.  Pipe cap is a part of the container according to the different geometric shape, can be divided into spherical, oval, disc, dome, cone shell and cap, among which spherical, oval, disc, dome pipe cap is collectively referred to as the convex pipe cap.  In the welding is divided into butt welding pipe cap, socket welding pipe cap.  

Cap made of carbon steel (# of A20, QQ345B, 16 mn, etc.), stainless steel (304 l, 316, etc.), alloy steel (15 mo315crmov35crmov45crmo), aluminum, titanium, copper, nickel and nickel alloy, etc.  

 Pipe cap implementation standards: GB, electric standard, Russian standard, Italian standard, American standard, German standard, etc.  Main uses: welded pipe end on the external thread to cover the pipe fittings.