Selection requirements for cold drawn tubes and process classification

- Mar 05, 2019-

Selection requirements for cold drawn tubes and process classification

Cold drawn pipe is actually a kind of steel pipe. It is classified according to the different production process in the process of production. It will be different to some extent from hot rolled pipe, cold drawn pipe in the process of capillary tube blank or raw material expansion. It will be effectively processed through multiple passes of cold drawing.

Cold drawn pipes can be effectively divided into alloy steel pipes, thick-walled pipes, high-pressure boiler steel pipes, petroleum cracking pipes, and low and medium-pressure boiler steel pipes to a certain extent. The outer diameter of cold drawn pipes can reach 6 mm to a certain extent. It can be up to 0.25mm, and the outer diameter of the thin-walled tube can be up to 5mm and the wall thickness is less than 0.25mm.

Selection requirements for cold drawn tubes

1. Cold drawn pipe In the process of material selection, under normal circumstances, the material with low hardness and good plasticity can be effectively selected under the condition of effective strength.

2. The specifications of the cold drawn tube need to be effectively selected according to the specifications of the finished product, and the elongation rate can be effectively guaranteed to be 20% to 40% during the operation.

3. The surface of the material selected for the cold drawn tube shall be free of cracks, folds, pits, cracks, etc.

4. The cold drawn pipe is best selected to be placed in the 0.5~2a steel pipe after hot rolling. To a certain extent, the time is too short, so that the surface of the steel pipe is rusted, the time is too long, and the surface of the steel pipe is too rusted, which will lead to the surface treatment of the steel pipe. Insufficient, thus affecting the surface quality of the finished