The straight seam steel pipe structure can be a round pipe structure or a rectangular pipe structure according to the specific conditions of the components, supply conditions, production and processing conditions, and cost, or a mixture of the two types of steel pipes. When used in combination, generally the chord rod is a rectangular tube, and the web rod is a round tube; sometimes, the chord rod can also be made of I-beam or H-beam, and the web rod is a rectangular tube or a round tube. The performance of the pipe section round tube and rectangular tube is suitable for axial stress, bending, and eccentric stress. It is suitable for axial stress and torsion components; axial compression and torsion components. The strength is higher when the axis is in tension. The mechanical properties have good stability. Although it is prone to local buckling under compression, the strength after buckling can be used. The hydrodynamic resistance is more favorable, and the force is small and poor. Under the same cross-sectional area, the surface area is small and the surface area is slightly larger There are correct angles, anti-corrosion and fire-resistance, corrosion-resistance and fire-resistance without edges and corners; fire-resistance and anti-corrosion materials save slightly more materials. Compared to structures made with open sections, steel savings of about 20% can be achieved in industrial buildings and up to half in tower structures.
How to clean straight seam steel pipe?
(1) We can use solvents or emulsions to clean the surface of the steel pipe. This method is very effective for oil and grease or dust and other organic substances on the surface of the steel pipe.
(2) For the rust on the surface of the steel pipe, we can use a wire brush and other things to polish the surface of the steel pipe to achieve the purpose of rust removal.
(3) The method of spraying can also be used. This method can not only clean up all rust, oxides, and dirt but also achieve the required average under the fierce impact of abrasives and the effect of friction. Roughness.
Straight seam steel pipe is not only used for conveying fluids and powdered solids, exchanging heat energy, and manufacturing mechanical parts and containers, but it is also an economical steel. The use of steel pipes to make building structure grids, pillars, and mechanical supports can reduce weight, save 20 to 40% of metal, and can realize factory mechanized construction. Using steel pipes to manufacture highway bridges can not only save steel and simplify structure but also significantly reduce the area of protective coating, saving investment and maintenance costs.
Nowadays, our application of steel pipes is very extensive, but there will inevitably be rust in the process of using steel pipes. The rusted steel pipes will affect their normal use, so if it is found that there is rust on the steel pipes It needs to be cleaned up in time. After relevant comparative tests, it has been verified that the yield pressure and the burst pressure of the straight seam steel pipe and the steel pipe are consistent with the measured value and the theoretical value, and the deviation is close. But whether it is the yield pressure or the burst pressure, the straight seam steel pipe is lower than the steel pipe. The blasting test also shows that the hoop deformation rate of the blasting opening of the straight seam steel pipe is significantly larger than that of the steel pipe. It is confirmed that the plastic deformation ability of straight seam steel pipe is better than that of steel pipe, and the blasting hole is generally limited to one pitch, which is due to the strong restraint effect of the spiral weld on the expansion of the crack.
Post time: Nov-24-2022