An end cap is a component used to seal the end of a container to isolate the medium; it is also called an end cover and belongs to boiler components in pressure vessels. According to surface shape, it can be divided into convex, conical, flat, and combined types, among which convex end caps include hemispherical, elliptical, and dished types.
An end cap is a component of a container, connected to the cylinder by welding. Based on different geometric shapes, it can be divided into spherical, elliptical, dished, spherical crown, conical shell, and flat cap types, among which spherical, elliptical, dished, and spherical crown type end caps are collectively referred to as convex end caps. In terms of welding, it is divided into butt-welded end caps and socket-welded end caps. It is used in various container equipment, such as storage tanks, heat exchangers, towers, reactors, boilers, and separation equipment. Materials include carbon steel (A3, 20#, Q235, Q345B, 16Mn, etc.), stainless steel (304, 321, 304L, 316, 316L, etc.), alloy steel (15Mo3, 15CrMoV, 35CrMoV, 45CrMo), aluminum, titanium, copper, nickel and nickel alloys, etc.