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.
The threads
Masts need to be RIGID.
They are similar but different. PVC is stronger & more rigid than polyethlene and is used for wastelines & polyethylene is used for water lines.
A 770 Greenlee hydraulic pipe bender bend is used for rigid steel conduit from 2" to 4".
The two main types of polyethylene are high-density polyethylene (HDPE) and low-density polyethylene (LDPE). HDPE is more rigid and has a higher strength-to-density ratio, making it suitable for applications requiring durability. LDPE is more flexible and has better impact resistance, commonly used for packaging and film applications.
Water
The main difference between polypropylene and polyethylene is their chemical structure. Polypropylene has a more rigid structure, making it stiffer and more heat-resistant than polyethylene. Polyethylene is more flexible and has a lower melting point. You can also differentiate them by their density, with polyethylene being less dense than polypropylene.
PE would be Polyethylene, check ISO for TC.
NO - pvc is Polyvinyl chloride, not hgih-density polyethylene
Polyethylene: Plastic, very stable, easily jointed, less prone to cracking/rotting out than cast or steel pipe.