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Extension Pipes for protection tube form 4

Extension pipes form 4 as defined by standard DIN 43 722 are screwed to the protection tube form 4. They are a component of screw-in thermometers.

Further details can be found under the corresponding menu item of our website.

The ordering code of this product is composed of the component name, diameter, wall thickness, extension pipe length, total length, pipe screw joint, screw-in thread and material number.

Example: Extension pipe

Total length
M in mm
Extension pipe
length in mm
thread N
Pipe screw joint
(SW 24)
Outer diameter
F1 in mm
Inner diameter
d1 in mm
165140M14x1,5/SW 17M24 x 1,5117
165140M18x1,5/SW 24M24 x 1,5149