The iron pipes and plastic pipes, that antifreeze
If the plastic pipe reaches a certain temperature, will accelerate aging, even cracking.
The hot and cold temperature that the iron pipe is subjected to is much more than that of the plastic pipe. The iron pipe will not be aged and deformed after the cold.
If the plastic tube is not water minus 30 degrees is also fine, there is water 3-5 degrees below zero on the cracking of the. The iron pipes are much more affordable.
