Page 17 - LFC catalogue Metrology

metrology

Taper Pipe Threads Inspection

Gauges for Taper Pipe Threads Taper Pipe Threads

Taper pipe thread (R) specified in JIS is are purposed mainly Taper pipe threads (PT) specifed in JIS are used to connect
to increase the density resistance of the screwed parts when fluid equipments, plumbing parts, pipes where density
connecting the fluid equipments, plumbing parts and pipes. resistance is necessary for their mechanical connection.
The gauges for taper pipe threads (R) are used for inspecting The gauges for taper pipe threads (PT) are used for inspecting
dimension of such the threads. the dimension of such the threads.

(R) ISO-based JIS (PT) Conventional JIS

Taper pipe threads (NPT) Taper pipe threads NPTF

Taper pipe threads (NPT) specified in American standard Taper pipe threads NPTF specified in American standard
(ANSI) are used to connect pipes, plumb parts, fluid (ANSI)are used to connect fluid equipments, plumb parts,
equipments, etc and are purposed to increase the density pipes. The density resistance of the thread parts can be
resistance of the threaded parts. Gauges for taper pipe obtained even without using seal compound.Gauges for taper
threads (NPT) are used for measuring dimension of such the pipe threads(NPTF)are used to check the dimension of such
threads. the threads.
NPT National Pipe Taper NPTF National Pipe Taper Fuel and Oil

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