No, it is not.
You need to give more info than simply "rigid pipe". What kind of "rigid pipe", what pressure will it have and where you are burying it.
Answer I'm no expert here with this but through minimal experience with HDPE pipe, PE stands for polyethylene and is used for water supply because polyethylene is neutral in water - meaning nothing in polyethylene reacts with water which would seep into the water. There are different pressure grades "PN" which must be considered for your specific use. PN 2.5 through PN16 indicate how much pressure the pipe can withstand.
They are similar but different. PVC is stronger & more rigid than polyethlene and is used for wastelines & polyethylene is used for water lines.
The threads
Masts need to be RIGID.
A 770 Greenlee hydraulic pipe bender bend is used for rigid steel conduit from 2" to 4".
Water
NO - pvc is Polyvinyl chloride, not hgih-density polyethylene
PE would be Polyethylene, check ISO for TC.
Polyethylene: Plastic, very stable, easily jointed, less prone to cracking/rotting out than cast or steel pipe.
Getting the most out of polyethylene pipe does not take a lot of hard work to get done. There are so many different things that these are useful for. They can act as connections between existing systems and even drainage solutions for those consumers who are desperate for a quick fix.
Possibly if there is little pressure in the pipe -(ie if it's a drain pipe) . For a pressure carrying pipe,I would cut out the hole and replace with a long coupling, or a short piece of pipe and 2 couplings.