... ,decoration Model:201,301,304. 1)stainless steel tube(welded) usded for door,window,guard, ... in both side and accurated size Name stainless steel tubeItemsSquare pipes, round pipes, oval pipes, ... test, heat treatment, NDT Chemical Composition of Material MaterialComposition201202304316430C≤0.15≤0.15≤0.08 ... 200<200 Chinese different types of stainless steel pipe for construction use with high quality