A rectangular tube is a square tube type. Many materials can form a rectangular tube body. It is used as a medium, what it is used for, and where it is used. Most square tubes are mostly steel pipes, and most of them are structural. Rectangular tube, decorative square tube, building square tube, etc.

The rectangular pipe is a name for square pipes, that is, steel pipes with equal side lengths. It is made of strip steel after process treatment. Generally, the strip steel is unpacked, flattened, crimped, welded to form a round tube, and then rolled into a square tube from the round tube and then cut to the required length. Usually 50 per pack.

Square tubes can be divided into seamless and welded. Seamless square tubes are formed by extruding seamless round tubes.

1. Performance index analysis of square tubes - plasticity

Plasticity refers to the ability of metal materials to produce plastic deformation (permanent deformation) without damage under load.

2. Performance index analysis of square tubes - hardness

Hardness is a pointer to measure the softness and hardness of metal materials. At present, the most commonly used method for measuring hardness in production is the indentation hardness method, which uses a certain geometric shape of the indenter to press into the surface of the metal material to be tested under a certain load, and the hardness value is determined according to the degree of indentation.

Commonly used methods include Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC), and Vickers hardness (HV).

3. Performance Index Analysis of Square Rectangular Tube - Fatigue

The strength, plasticity, and hardness discussed above are all indicators of the mechanical properties of metals under static loads. In fact, many machine parts work under cyclic loads, under which the parts will fatigue.

4. Performance Index Analysis of Square Rectangular Tube - Impact Toughness

The load acting on the machine parts at a high speed is called impact load, and the ability of the metal to resist damage under impact load is called impact toughness.

5. Performance Index Analysis of Square Rectangular Tube - Strength

Strength refers to the ability of metal materials to resist damage (excessive plastic deformation or fracture) under static load. Since the load acts in the form of tension, compression, bending, shearing, etc., the strength is also divided into tensile strength, compressive strength, flexural strength, and shear strength. There is often a certain relationship between various strengths, and tensile strength is generally used as the most basic strength indicator in use.