By the way chem pipelines are wrong
da nyt b4 da exam iwas out wid friends lol "study grouping" and playing cards
and den my friends dad came in so we hid all da card wid papers
and i acted like i was askin this question
which one of dese uses stainless steel
and chemical plant was 1 of da options
and his dad sed chem plants and we chekd da answer scheme and it was ryt
so dats why i remember =D
lol soory for da anecdote xDD
oh and da question asked which 1 dsnt use stainless steel