Introduction To Square Steel Pipe

Square steel pipe, thick-walled square steel pipe, large diameter square steel pipe, seamless square steel pipe, low alloy square steel pipe, 135*135*10 square steel pipe, square steel pipe for tower crane, Q345B low alloy square steel pipe, 20# seamless square steel pipe.

Square tube, as its name implies, it is a square tube type. A variety of materials can form a square tube. It is used in medium, what is used, and where it is used. Most square tubes are made of steel tubes, mostly structures. Square tube, decorative square tube, building square tube, etc.

Square tube is a kind of square pipe, which is a steel pipe with equal sides. It is a strip of steel that has been processed and rolled. Generally, the strip is unpacked, flattened, crimped, welded to form a round tube, and then rolled into a square tube by a round tube and then cut into a desired length. Usually 50 per pack.


Classification and performance

The square tube is seamless and welded, and the seamless square tube is formed by extruding a seamless tube. Square steel pipe, thick-walled square steel pipe, large diameter square steel pipe, seamless square steel pipe, low alloy square steel pipe, 135*135*10 square steel pipe, square steel pipe for tower crane, Q345B low alloy square steel pipe, 20# seamless square steel pipe.




1. Performance index analysis of square tube – plasticity

Plasticity refers to the ability of a metal material to undergo plastic deformation without damage under load.


2. Performance index analysis of square tube – hardness

Hardness is a measure of the hardness of a metal material. At present, the most commonly used method for measuring hardness in production is the indentation hardness method, which presses the surface of the metal material to be tested under a certain load with a certain geometry of the indenter, and determines the hardness value according to the degree of being pressed.

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


3. Performance index analysis of square tube – fatigue

The strength, plasticity, and hardness discussed above are all indicators of the mechanical properties of the metal under static load. In fact, many machine parts work under cyclic loading, under which conditions parts can fatigue.


4. Performance index analysis of square tube – impact toughness

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


5. Performance index analysis of square tube – strength 

Square steel tube, thick wall square steel tube, large diameter square steel tube, seamless square steel tube, low alloy square steel tube, 135*135*10 square steel tube, square steel tube for tower crane, Q345B low alloy square steel tube, 20# seamless square steel pipe.

Strength refers to the property of a metal material against damage (excessive plastic deformation or fracture) under static load. Since the action mode of the load is tensile, compression, bending, shearing, etc., the strength is also divided into tensile strength, compressive strength, bending strength, shear strength and the like. There is often a certain relationship between various strengths, and tensile strength is generally used as the most basic strength indicator.


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