Seamless square tube performance and characteristics

For the word seamless square tube, the concept of the first layer of meaning from its appearance, because of its four sides and four corners, so it is called “square tube”, and secondly, whenever we talk about seamless square tube, we will always think of welded square tube, and seamless square tube and welded tube is also fundamentally different from the seamless square tube, leaving a lot of empty space in the square tube. The seamless square tube has a large number of hollow sections, which is also used as a functional performance of conveying various fluids.

The main performance of seamless square tube First of all, the performance is plasticity, for seamless square tube, the metal material can be under the action of the load, resulting in plasticity and thus deformation, this deformation refers to a permanent deformation, generally will not be damaged by external forces.

Secondly, let's talk about the hardness of seamless square tube, we should know that the hardness index of steel pipe material is also a measure of the degree of hardness of a metal material to a certain extent, the hardness of seamless square tube belongs to the higher one in all materials. Finally, the fatigue of seamless square tube, similar to the two properties mentioned above, the fatigue of seamless steel tube is moderate.

Seamless square tube main features: seamless square tube inside and outside the wall of high precision, no oxidation layer of the square tube after heat treatment, high cleanliness of the inner wall, the square tube to withstand high pressure, cold bending without deformation, flaring, flattening without cracks, and can be used for a variety of complex deformations and mechanical processing treatments.

Square tube weight calculation formula: 4 * wall thickness * (side length - wall thickness) * 0.00785 can better enhance the strength and wear resistance of the surface layer of the seamless square tube, the seamless square tube to carry out the surface treatment, such as the surface layer, high-frequency induction treatment, organic chemical heat treatment and so on.

Rectangular tube weight formula: (circumference / 3.14 - wall thickness) * wall thickness * 0.02466 Thermal quenching provides that the substrate is dominated by ferrite after treatment. Refrigeration with water spray or paint acrylic emulsion aqueous solution. Heat treatment temperature in the middle of 300-500, strength of 30-40 HRC, can ensure the strength and wear resistance of seamless square tube surface.