17x17x1.2mm Square Hollow Section tube 1.Size:specified demension 2. ... octagon, etc Square Hollow Section Pipe/Steel Pipe/Tube 1-Finishing: galvanized,paint,annealed etc.2-Thickness: ... 9- Other products: octagon shaped tube, hexagon shaped tube, ellipse shaped tube, arch shaped tube, rectangular shaped tube, square shaped tube, irregalar shaped tube, etc.special shaped steel pipe/tubecustom profile ...