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? Cold-drawn square tubes and cold-bent square tubes are two different processes and production methods of steel tube products, they have some obvious differences in the nature, application areas and manufacturing process.
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1. process and manufacturing process: ? Cold-drawn square tube: cold-drawn square tube is a process in which the hot-rolled square tube is cold-worked. Firstly, the hot rolled square tube is formed into initial shape by heating and continuous rolling, and then cold-drawn processed by drawing machine at room temperature, relying on the role of tension and extrusion to gradually reduce the cross-section size and wall thickness, so as to get the precise size and smooth surface.
2.Cold Bending Square Tube: Cold Bending Square Tube is the use of cold bending equipment for processing of steel pipe. The manufacturing process of cold-formed square tubes does not involve heating and rolling operations, but rather the plastic deformation of steel tubes through the action of mechanical forces to achieve the desired shape and curve.
3. Properties and characteristics: ? ? Cold-drawn square tubes: cold-drawn square tubes have high precision and dimensional consistency, smooth internal and external surfaces, no oxidized layer and rust, and good dimensional stability. Due to cold working, the mechanical properties of cold drawn square tube are more excellent, higher hardness, strength and toughness. Therefore, cold drawn square tubes are widely used in machinery manufacturing, automobile parts, aerospace and other fields.
4.Cold Bending Square Tube: Cold Bending Square Tube mainly focuses on shape design and curve processing, and has a certain degree of structural strength and bearing capacity. Because it does not undergo high-temperature smelting and cold processing, the mechanical properties of cold-formed square tube is relatively weak, hardness and strength is low. Cold-formed square tubes are mainly used in construction, decoration, home and municipal engineering and other fields, such as guardrails, doors and windows, stair handrails and so on.
5. Application areas:? ? Cold-drawn square tubes: Due to high precision and good mechanical properties, cold-drawn square tubes are suitable for applications requiring highly accurate dimensions and smooth surfaces, such as precision instrument manufacturing, automation equipment, bearings, hydraulic cylinders and so on.
6. Cold Bending Square Tube: Cold Bending Square Tube is suitable for occasions that require diverse shapes and curved processing, mainly used in architectural decoration, interior design, furniture manufacturing, municipal engineering and so on.