What Threads Are Used for American Standard IMC And RMC Pipes

American standard IMC and RMC pipes usually use NPT threads. NPT is a 60 degree cone pipe thread according to the American standard. The main reasons for using NPT threads are as follows:

Good sealing performance: The taper design of NPT thread is 1:16, which can form a tight fit between the inner and outer threads when tightened, effectively preventing liquid or gas leakage. It can meet the sealing requirements of IMC and RMC pipes in electrical installation and other applications, protecting internal electrical wires from external environmental influences.

Secure and reliable connection: The 60 degree tooth profile angle and taper fit enable the NPT thread to withstand a certain amount of tension and pressure during connection, making it less likely to loosen or fall off, ensuring a stable connection between IMC pipes and RMC pipes, as well as with other accessories.

Unified standard specification: NPT thread is a widely used standard thread in the United States, with unified size specifications and processing standards, which facilitates the exchange and connection between IMC pipes, RMC pipes and related accessories produced by different manufacturers, and is conducive to reducing costs and improving construction efficiency.