Circular Steel Pipe and Shaped Steel Pipe
The stainless steel pipe can be divided into the circular steel pipe and the shaped steel pipe by different cross-sectional areas. Under the condition of the same circumference, the area of circle reaches the largest. So there can be more fluid delivery with a circular tube. In addition, when the ring cross-section is subject to the radial pressure to internal or external, the force is more evenly. Therefore, most of stainless steel pipes are circular. However, the circular steel pipe also has some limitations. For example, the bending strength of the rectangular steel pipe is better than that of the circular steel pipe under the conditions of plane bending. The rectangular tube is widely used in a number of sets of frames of farm machines, and steel-wood furniture. The pipes of shaped cross-section are need for different purposes.
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