Seamless steel tube has hollow cross section, and it is widely used as a conduit for conveying fluid, such as pipelines for transporting petroleum, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel and steel, steel pipe is a kind of economic section

Seamless tube has strong sensitivity, good thermal conductivity, and can resist oxidation. It is very suitable for many harsh environments. In order to ensure normal use, there are many strict requirements in storage, which requires us to understand clearly, otherwise it will affect the final

In general, after steel pipe is folding, various polygonal lines are formed on the surface, affecting the use of precision steel tubes, and precision steel tubes can withstand a variety of complicated deformation processing. Therefore, they are favored by many fields,

The cold drawn precision seamless steel pipe has the characteristics of no oxidation layer inside and outside, high pressure and no leakage, high precision, high smoothness, cold bending, flat surface and no crack. It is mainly used in mechanical structure, hydraulic equipment and pneumatic or

The quality defects of precision seamless steel pipe after heat treatment usually have a great relationship with technical operation. Now let's see what causes the defects of seamless steel tubes. 1. Overheating The microstructure overheating after quenching can be observed from the rough joint of the precision seamless steel tube.

With the rapid development of China's petroleum industry, the demand for high grade steel pipe is becoming more and more large, and the high grade steel pipe must be quenched. Therefore, it is very important to study the overall quenching of the steel pipe.

1. the false and inferior thick wall seamless steel pipe is easy to fold up. Folding is a variety of broken lines formed on the surface of thick walled seamless steel tubes, which often run through the longitudinal direction of the entire product.