Seamless galvanized square tube is a long steel tube with hollow cross-section and no joints around. It is a square tube made of seamless tubes extruded from four sides of the die. The square tube has a hollow cross section and is widely used as a pipeline for conveying fluid. Mainly used in liquid transportation, hydraulic support, mechanical structure, medium and low pressure, high pressure boiler tubes, heat exchange tubes, gas, petroleum and other industries. The tower is stronger than the welded one and will not crack.
Welded galvanized steel pipe is a hollow square steel square tube, also known as hollow cold-formed steel. It uses hot-rolled or cold-rolled strip or steel coil as a blank, formed by cold bending and then high-frequency welding to form a square cross-sectional shape and size. In addition to the increased wall thickness, the corner size and edge straightness of the seamless square tube can reach or exceed the level of resistance-welded cold-formed square tube. According to the needs of customers, we can also produce square pipes with size r as required by customers.
Seamless steel tubes are of better quality and more expensive. Galvanized Square Steel Pipe are welded by bending and welding. The high temperature in the welding process will affect the microstructure of the metal, and the mechanical properties of the welded square tube are not as stable as the seamless steel tube.
