hahaha...at first i really thought that joeker sell aluminium pipe's.
joeker,dosen't s.steel soak up more heat compare to aluminium?
from what i've know,s.steel is bad choice for i/c piping compare
to aluminium.is just that aluminium cost much more then s.steel.
that's why alot of ppl opted to use the next best thing,s.steel.
just my 2 cent.
its not easy to weld ALU.. cost depend on type.. 1xxx or 5xxx series.. SS more harder n tough than ALU.. ALU easily to crack compared to SS.. but ALU is lighter than SS..