The straight seam steel pipe structure can adopt a round pipe structure or a rectangular pipe structure according to specific conditions such as the stress conditions of the components, supply conditions, manufacturing and processing conditions, and cost, or the two types of steel pipes can be mixed. When used in a mixed manner, generally the chords use rectangular tubes and the webs use round tubes; sometimes, the chords can also use I-beams or H-shaped steels, and the webs use rectangular or round tubes. The properties of round tubes and rectangular tubes are suitable for axial force, bending, and eccentric force. They are suitable for axial force and torsion components; axial compression and torsion components. The strength is higher when the axis is under tension. The mechanical properties are good and the stability is good. Although local buckling is easy to occur when under pressure, the post-buckling strength can be used, and the hydrodynamic resistance is more favorable. The force is small and the force is poor. Under the same cross-sectional area, the surface area is smaller and the surface area is slightly larger. It has straight corners, is anti-corrosion and fire-resistant, has no edges and corners, and uses slightly more fire-resistant and anti-corrosion materials. Compared with structures made with open sections, steel can be saved by about 20% in industrial buildings and up to half in tower structures.
How to clean straight seam steel pipes?
(1) We can use solvents or emulsions to clean the surface of steel pipes. This method is very effective for oil, grease, dust, and other organic matter present on the surface of steel pipes.
(2) For rust on the surface of the steel pipe, we can use a wire brush or other tools to polish the surface of the steel pipe to achieve the purpose of rust removal.
(3) The spraying method can also be used. This method can not only completely clean the rust, oxides, and dirt, but also the steel pipe can achieve the required uniformity under the strong impact of the abrasive and the effect of friction. Roughness.
Straight seam steel pipes are not only used to transport fluids and powdery solids, exchange heat energy, and manufacture mechanical parts and containers, but they are also a kind of economical steel. Using steel pipes to manufacture building structural grids, pillars, and mechanical supports can reduce weight, save 20 to 40% of metal, and enable factory-like mechanized construction. Using steel pipes to manufacture road bridges can not only save steel and simplify construction but also greatly reduce the area of protective coating, saving investment and maintenance costs.
Nowadays, we use steel pipes very widely, but rust will inevitably occur during the use of steel pipes. Rusted steel pipes will affect its normal use, so if you find rust on the steel pipes, It need to be cleaned up in time. Through relevant comparative tests, it has been verified that the measured values of yield pressure and burst pressure of straight seam steel pipes and steel pipes are consistent with the theoretical values, and the deviations are close. However, whether it is yield pressure or burst pressure, straight seam steel pipes are lower than steel pipes. The blasting test also shows that the circumferential deformation rate of the blast hole of the straight seam steel pipe is significantly greater than that of the steel pipe. This confirms that the plastic deformation ability of straight seam steel pipes is better than that of steel pipes, and the blasting opening is generally limited to one pitch. This is because the spiral welds play a strong role in constraining the expansion of the crack.
Post time: Oct-19-2023