Seamless Steel Tube

Seamless steel tube is a kind of long steel with hollow section and no joints. The pipe has a hollow section, which is used in large quantities as a conduit for conveying fluids, such as pipes for oil, gas, gas, water and certain solid materials. Compared to the steel pipe and round steel solid steel bending torsional strength phase at the same time, the weight is lighter, is a kind of economic cross section steel, widely used in the manufacture of structural and mechanical parts, such as petroleum drill pipe, auto transmission shaft, bicycle frame and construction of steel scaffolding is used. With steel pipe manufacturing annular parts, can improve material utilization, simplifying the manufacturing process, material saving and processing time, such as rolling bearing ring, jack sets, at present has been widely made from steel pipe. Steel pipes are also indispensable materials for conventional weapons, such as barrel and barrel. The shape of the cross-sectional area of the steel pipe can be divided into round tubes and different types of tubes. Because the circle is the largest in terms of the circumference, the circular tube can carry more fluid. In addition, the ring section has a uniform force when it is subjected to internal or external radial pressure. Therefore, most steel pipes are round tubes. But, pipe also has some limitations, such as in the plane bending condition, the pipe is not square, rectangular tube bending strength is big, some agricultural machinery and skeleton, rectangular tube, steel wood furniture is commonly used. Different types of steel tubes with other cross-section shapes are required for different purposes.