The concept of seamless steel pipe
Seamless steel pipe is long steel with hollow sections and has no joints surrounding the steel bar.
It is mainly used as a pipeline to transfer the fluid, such as oil,natural gas, water and some solid materials,
etc. As compared to the flexural torsional strength in the same light, it is an economic cross
section steel. The seamless steel pipes are widely used in the manufactures and mechanical parts,
such as the oil pipe, automotive transmission shaft, bicycles aircraft as well as building construction.
With steel pipe manufacturing, annular parts can improve the material utilization rate; simplify the
manufacturing process, save material and machining time. For example, the roller bearing rings and the jack
sets have been widely made ofseamless steel pipe. Cylindrical rube can deliver more fluid since the circle
has the largest areas under the same circumference. In addition, the ring cross-section bears internal or external pressure, the force more evenly, so that vast majority of tubular steel pipes
are cylindrical rubes. However, the tube also has some limitations, such as in-plane bending conditions, the pipe on the better side, rectangular tube bending strength,
and a number of sets of s, steel-wood furniture on the commonly used square, rectangular tube.