The latest market situation of Shandong Dezhou seamless steel pipe | latest quotation

包装说明：

打捆，刷漆，管帽

交货地点：

本厂区

截面形状：

圆管

Generally used seamless steel pipes are made of hot-rolled or cold-rolled high-quality carbon structural steels such as, Seamless pipes made of low carbon steel such as , , etc. are mainly used for fluid transportation pipelines. Seamless tubes made of medium carbon steel such as , , etc. are usually used to manufacture mechanical parts, such as stressed parts of automobiles and tractors. Generally, seamless steel pipes must ensure strength and undergo a flattening test. Hot-rolled steel pipes are delivered in a hot-rolled or heat-treated state, while cold-rolled steel pipes are delivered in a heat-treated state. Hot rolling, as the name suggests, has high temperature, so the deformation resistance is small and large deformation can be achieved. Take the rolling of steel plates as an example. Generally, the thickness of continuous casting billet is about 0.5%, and after rough rolling and finish rolling, the final thickness is ~. At the same time, due to the small width-to-thickness ratio of the steel plate, the dimensional accuracy requirements are relatively low, and plate shape problems are not prone to occur. The main focus is to control the crown. For those with structural requirements, it is generally achieved through controlled rolling and cooling, that is, controlling the opening rolling temperature, final rolling temperature and curling temperature of finishing rolling to control the microstructure and mechanical properties of the strip.