Briefly describe the production process of A53 steel pipe

A53 seamless steel pipe is a material of American standard steel pipe, in which A53-A is equivalent to domestic 10# steel, A53-B is equivalent to domestic 20# steel, and A53-F is equivalent to domestic Q235 material.

The main production process of A53 seamless steel pipe is divided into cold drawing and hot rolling. The main difference between the two is that the production process of cold rolled A53 seamless steel pipe is generally more complicated than that of hot rolling. In appearance, the cold-rolled seamless steel pipe of A53 is shorter than the hot-rolled seamless steel pipe, and rolled A53 seamless steel pipe, the wall thickness of cold-rolled seamless steel pipe is generally smaller than that of hot-rolled seamless steel pipe, but the surface of A53 steel looks brighter. The surface of A53 hot-rolled steel pipe is relatively rough. The main production process is round tube billet → heating → piercing → three-roll cross rolling, continuous rolling or extrusion → tube removal → sizing (or reducing) → cooling → straightening → hydraulic test (or flaw detection) → marking → entering library.