PE tube can also be used, as long as it is a non-conductive material, stay away from the lightning rod. I used to be a professional lightning protection engineer

According to GB50057-20 10 lightning protection specification:

Exhaust pipe, breathing valve, exhaust pipe and other nozzles outside the following space. The discharge of explosive dangerous gas, steam or dust should be within the protection range of lightning arrester;

1)? When there is a pipe cap, it shall be determined according to Table 4.2. 1.

2)? Without a cap, it should be a hemisphere with a radius of 5 m above the nozzle.

3)? The contact point between lightning arrester and lightning shall be located outside the space specified in Item 1 or Item 2 of this clause.