The main difference between a pipe cap and a head is the inner diameter size, application field, and connection method.
Inner diameter size: The inner diameter of the pipe cap is relatively small, usually not exceeding 300mm, and is suitable for pipeline systems; The inner diameter span of the head is relatively large, which can adapt to pressure vessels of different sizes, with a maximum diameter of about 6000mm.
Application areas: Pipe caps are mainly used in pipeline systems to seal the ends of pipelines, and their pressure bearing capacity is relatively low; The head is suitable for pressure vessels with high sealing and pressure resistance requirements, such as storage tanks, heat exchangers, synthesis towers, reactors, and boilers.
Connection method: The pipe cap can be fixed at the end of the pipeline through threaded connection or other methods, with a certain degree of disassembly, making it convenient for maintenance and replacement; The head is generally fixed at the port of the pressure vessel by welding and cannot be disassembled after welding is completed.
Material and manufacturing process: Pipe caps are usually made of stainless steel, with small sizes that can be forged; The head is generally pressed with steel plate and has a larger size.
These differences make pipe caps and heads have their own advantages in their respective application scenarios, and selecting appropriate components is of great significance for ensuring the safe operation of equipment and extending its service life.