Tangshan rectangular tube manufacturer for Shangqiu
Wall thickness grading of rectangular pipes - extra thick rectangular pipes, thick rectangular pipes, thin rectangular pipes. The thick wall rectangular pipe is a galvanized welded square pipe used for low pressure fluid escort, which is only used for ordinary low pressure fluid, mainly used for water, gas, oil, hot water or steam escort; Galvanized welded thick wall rectangular pipe for low pressure escort is mainly used to escort ordinary low pressure fluids such as water, gas, oil, hot water or steam. The surface of the square pipe adopts hot galvanizing or cold galvanizing anti-corrosion process. The rectangular thick wall mining infusion welding square tube is mainly used for mining air pressure welding, row welding, shaft drop welding, etc.
Tangshan rectangular tube manufacturer for Shangqiu
A large number of pipes are used to escort fluids, such as oil, natural gas, water, gas, steam, etc. In addition, when the bending and torsional strength are the same, the weight is light, so they are also commonly used to manufacture mechanical parts and engineering structures. It is also used for consumption of various conventional weapons. Square tubes are commonly used in various building structures and engineering structures, such as building steel for building beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, warehouse shelves, etc. Square tubes play a very important role in the construction industry.
Tangshan rectangular tube manufacturer for Shangqiu
The square tube detour is caused by improper adjustment of the rolling mill, residual stress during rolling and improper cooling along the tube section and length. Therefore, it is impossible to get very straight pipes directly from the rolling mill. Only after cold straightening the roundness of pipes can you satisfy the rules of technical conditions. The basic principle of straightening is to stop the elastic-plastic detour of the square tube from a large one to a small one, so it is necessary for the steel tube to be repeatedly detoured in the straightening machine. The level of the steel pipe's repeated detour is mainly determined by the adjustment of the straightening machine. There are many factors that affect the straightening quality, such as the roundness of the original pipe, steel pipe size and data straightening model, adjustment parameters, etc.
Tangshan rectangular tube manufacturer for Shangqiu
The quality of seamless square tube is better and the price is more expensive. The welded square tube is welded by bending the plate. There is high temperature in the welding process, which will affect the metal structure, and its mechanical properties are not as stable as seamless steel tubes. Welded square tube is a hollow square section steel square tube, also known as hollow cold-formed steel. It is a square section steel with overall dimensions made of hot rolled or cold-rolled strip steel or coil steel by high-frequency welding after cold bending and forming. In addition to the thickening of the wall thickness, the size of the corner and the straightness of the edge of the seamless square tube have reached the extent that they exceed the resistance welded cold formed square tube. The size of the R corner is generally between 2 and 3 times of the wall thickness. It can also consume R corner square tubes of the size required by customers according to their needs. Seamless square tube is a kind of long steel with hollow section and no seams around. It is a square tube formed by extrusion of seamless tube through four sides of the mold. The square tube has a hollow section and is widely used as a pipeline to escort fluid. It is mainly used in liquid escort, hydraulic support, mechanical structure, medium and low pressure and high pressure boiler tubes, heat exchange tubes, gas, oil and other industries. It is more stable than welding and will not show cracks.
