Seamless Steel Pipe

Seamless square tubes have a relatively small cross-sectional area in each layer, which necessitates a lower heat output. Tianjin Seamless Square Tube manufacturers also employ several jump welds in each layer. Each welding section mostly creates a new temperature gradient on a cold thick steel plate, resulting in a narrow plastic deformation zone each time. Therefore, the average total width of the plastic deformation zone (i.e., the width when collapsed horizontally) is smaller than that of the direct welding in relative layers, and also smaller in vertical collapse. Compared to continuous, full-width oscillating welding deformation, it is even smaller. Square steel tube, also known as square pipe, refers to seamless steel tubes with the same circumference. It is produced by processing hot-rolled strip steel. Generally, the hot-rolled strip steel is unpacked, leveled, coiled, welded into round steel pipes, then cold-rolled into rectangular square tubes, and finally cut to the required length. Typically, there are 50 tubes per bag.