external pipe thread的意思|示意

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External pipe thread is an English phrase that refers to a type of threading commonly used to join pipes and fittings together. It is commonly used in plumbing, but is also found in water cooling systems, steam heating systems, and other mechanical devices. The external thread refers to the threading on the outside of the pipe, which is designed to fit into its mating fitting.

External pipe thread is created by cutting a series of slots into the end of a pipe, forming a series of ridges around its circumference. The configuration of the ridges may be rectilinear or tapered, depending on the type of pipe being used and the design requirements of the application. The mating fitting has an interior thread which is designed to fit into the external thread on the pipe. It is important that the threads are correctly aligned in order for the connection to form a secure seal.

External pipe thread is often sealed with a sealant to prevent leaking at the connection. When using tapered pipe threads, a lubricant is used to help ensure the threads are properly aligned and to reduce friction when the fitting is screwed into the pipe. When using rectilinear threads, a locking compound can be used to further secure the fitting to the pipe.

External pipe thread is used in a variety of industries, including water pipes, chemical plants, steam pipes, and fuel lines. The type of threading used in each application will depend on the design specifications and the materials used. In any case, it is important to use the correct tools and techniques when installing external pipe thread to ensure a secure and leak-free connection.