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Posted: Sun Dec 09, 2007 4:39 pm
by SpudFarm
ok i thought that the seam would open on peak but i have looked closely at the sealed hybrid "hybrid test" or something and that has a seam and survived a closed 11x! (i think there are some black fittings on it also)

but if someone can answer if black pipe is weaker or stronger than galvanized i will be happy