We are specialized in making square steel tube with specification range 20*20-600*600 mm,with thickness 2-25 mm ; rectangular steel tube 20*30-500*600mm ,with thickness 2-25mm , meanwhile we are also able to make ellipse tube, semicircle tube, arch tube, fan-shaped tube, triangle tube, hexagon tube, eightangular tube and other complex cross-sectional tube, which contains the welded and seamless with various materials and thousands of specifications. More over we also operate seamless steel tube, welded steel tube as well as process different kinds of hot-expand steel tubes.