classification:
The head is a part of the container that is welded to the cylinder.According to different geometric shapes, it can be divided into spherical, elliptic, disc-shaped, conical shell and flat cover, among which spherical, elliptic, disc-shaped and spherical crown heads are collectively referred to as convex heads.The welding is divided into butt welding head and socket welding head.Used for all kinds of container equipment, such as storage tank, heat exchanger, tower, reaction kettle, boiler and separation equipment.The materials are 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 alloy, etc.