What is the difference between welded square tube and seamless square tube?

When it comes to welded square tube and seamless square tube, many people don't know the difference between the two kinds of square tubes. So let us introduce it to you in detail today!

1. Welded square tube is a hollow square section steel square tube, also called hollow cold-formed steel.
It is a section steel with a square cross-section shape and size made by hot-rolled or cold-rolled strip steel or coiled plate as a blank, formed by cold bending processing, and then by high-frequency welding.
In addition to the thickening of the wall thickness of the thick-walled square pipe, the corner size and edge flatness reach or exceed the level of the resistance welded cold-formed square pipe. The size of the R angle is generally between 2 times and 3 times the wall thickness. .According to the needs of customers, we can also produce R-angle square tubes of the size required by customers.
2. The seamless square tube is a long strip of steel with a hollow section and no joints on the periphery. It is a square tube formed by extruding seamless tubes through 4 sides of a mold. The square tube has a hollow section and is used as a pipeline for transporting fluids.
Seamless square tube is mainly used in liquid transportation, hydraulic support, mechanical structure, medium and low pressure, high pressure boiler tube, heat exchange tube, gas, petroleum and other industries. It is stronger than welded and will not crack.

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