... etc Square Hollow Section Pipe/Steel Pipe/Tube 1-Finishing: galvanized,paint,annealed etc.2- ... from1.0mm-20mm)3-Length: customized ( 3m/5.8/6m usually)4-Section: square, rectangle, ellipse, ... 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 ...