Cold-drawn stainless steel pipe is to draw the metal stainless steel pipe with a cold-drawing machine without heating. The advantage is that it does not need to be carried out at high temperature. Toughness and tensile strength yield better mechanical properties.
Cold drawn (rolled) stainless steel seamless steel pipe process:
Round tube blank→heating→piercing→heading→annealing→pickling→oiling (copper plating)→multi-pass cold drawing (cold rolling)→billet tube→heat treatment→straightening→hydraulic test (flaw detection)→marking→ storage.
The difference between cold drawing and cold drawing:
Cold drawing and cold drawing are two different methods of metal cold working, and the two are not the same concept.
Cold drawing refers to the method of applying tension at both ends of the metal material to cause the material to produce tensile deformation;
Cold drawing refers to the method of applying a pulling force on one end of the material to make the material pull out through a die hole. The diameter of the die hole is smaller than the diameter of the material. The cold drawing process causes the material to have extrusion deformation in addition to the tensile deformation, and the cold drawing process is generally carried out on a special cold drawing machine. Materials that have been cold drawn have better properties than those that have been cold drawn.
