[1000-pipe to introduce you to the star product - hot galvanized square tube] galvanized square tube represented in a manner Example: square tube 50 * 50 * 5 * 6m, expressed as follows: 50 (width) * 50 (width) * 5 (thickness) * 6m (a few meters). Because equilateral square tube square steel 50 * 50, which used a few meters 6 meters; general industry simply: 50 * 5 square. Representation in accordance with square tube steel, square tube generally edge width, thickness as a standard representation. The method of forming a square tube, curved real solid bend, suggests that it is compacted bent inside and outside the real-bending roller and tube outer wall two-way compaction. 1) The real advantage is that the rebound bend steel 38 * 38 small square, forming an accurate, precise and long roll, molded interior angle R more accurate. 2) there is a drawback of real bend stretching / thinning effects. First, a solid curve bends will produce a draw effect of the longitudinal length of the bend lines shortened; second, real curved bend in the metal due to stretching and thinning. 2, the air bend moment the air bend formed by the one-way contact with the outer roller and the outer wall of the tube so that the strip is bent, the air bend bending line will produce compression, the compression effect so that the longitudinal growth of the steel bending line 32 * 32, bends metal accumulation appear thicker, which is the air bend compression / thickening effect. 1) The advantage is that it can be air bend side bend in real time can not be bent, such as square and rectangular tube top / side synchronous bending and finishing. Air bend can also bend R <0.2t inside corners without wall fracture. Disadvantages 2) is in the upper air bend / air bend when synchronization sides, 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 the unit and molding quality. This is also the moment when pipe and tube side air bend forming different characteristics. [1000-pipe to introduce you to the star product - hot galvanized steel square tube] Models nominal outside diameter of the international management of international caliber thickness weight / piece ￠ 15 (4 points) 21.32.751.26217 ￠ 20 (6 points) 26.82.751.63169 ￠ 25 (1-inch) 33.53.252.42217 ￠ 32 (1.2 inch) 42.33.253.1391 ￠ 40 (1.5 inch) 483.53.8491 ￠ 50 (2-inch) 603.54.8861 ￠ 65 (2.5 inch) 75.53.756.6437 ￠ 80 (3 inches ) 88.548.3437 ￠ 100 (4 inch) 114410.8519 ￠ 125 (5 inch) 1404.515.0419 ￠ 150 (6 inches) 1654.517.8119 ￠ 200 (8 inch) 219,631.527 square steel 40 * 40, Tianjin galvanized square steel (already certification), the steel provided by the Tianjin Steel Pipe Co., Ltd. Rong thousand. 1000-Tianjin Steel Pipe Co. (www.tjqre.com) (www.tjqre.com) is Tianjin, steel leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In the 1000-pipe leadership with the staff warmly welcome all inquiries negotiations to create the 1000-pipe a better future.