RHS name suggests, it is a kind of square shape of the tube, a variety of materials can form a square tube material body, which the media to, what to use, what to use in place, most of the square tube steel for the majority, after unpacking, smooth, curl, Tianjin galvanized pipe welded to form the tube, and then cut to the desired length and then rolled into the square tube by tube. Typically 50 per pack square tube in the majority of large-sized spot at 10 * 10 * 500 * 500 * 0.8-1.5 ~~ 10-25, the pipe use is divided into square tube structure, decorative square tube, square tube construction 20x20 galvanized pipe, machinery square tubes. Square tube, called a square pipe galvanized pipe, that is, the side looks such as steel. After treatment process is rolled strip made. Redrawn square tube: the general is to strip after unpacking, smooth, curl, tube welding to form, and then rolled into the square tube by tube and then cut into the required length. The method of forming a square tube, solid curved bend reality, as the name suggests is a compact folding, real-bend tube outer wall and the inner and outer roller compacted bidirectional. 1) The real advantage is that the rebound of small curved, forming an accurate, precise and long roll, inside corner molding R more accurate. 2) there is a drawback of real curved stretch / thinning effects. First, the real cause bends bend tensile stretching effect of the longitudinal length of the bend lines shortened; second, the real turning point curved metal thinning due to stretching. 2, empty air bend bend formed by unidirectional moment outside contact with the tube wall so that the roller strip bending, air bend bending line will produce compression, longitudinal elongation effect causes the bending line, bending occurs at the metal accumulation thickening, which is compressed air bend / thickening effect. 1) the advantage is that you can carry out air bend side bend q235b galvanized square tube in real-time can not be bent, such as square and rectangular tube on top / side of sync bending and finishing. Empty bend can also bend R <0.2t inside corners without wall fracture. Disadvantages 2) is in the upper air bend / air bend when synchronous side, since the upper and lower rollers while producing pressure forming force easily beyond the critical point, resulting in instability of the concave edge portion, and can also affect the stable operation of units and forming quality. This is also the moment when the tube and the tube side air bend forming different characteristics. q235b galvanized pipe, galvanized pipe, galvanized square tube prices provided by the Tianjin Steel Pipe Co., Ltd. Rong thousand. Thousands of Tianjin Steel Pipe Co., Rong (www.tjqrgg.com) strong, credible, in Tianjin steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the 1000-pipe and you hand in hand into the brilliant, for a better future!