How about the performance of high frequency welded pipe

The high-frequency welded pipe is a spiral high-frequency welded pipe made of strip steel coils. It is generally extruded at high temperature and welded by automatic double-wire front and back arc welding. The high-frequency welded pipe sends the strip steel into the welded pipe unit. The strip is rolled by multiple rolls and rolled slowly to form a round tube with gaps in the mouth, and the thickness of the extrusion rolls is adjusted for welding and welding.

If the gap is large, the proximity effect will be reduced, the vortex heat will not be enough, and the welded crystals cannot be fused well, resulting in non-fusion or cracking. If the gap is small, the proximity effect will increase, and the welding and heat value of electric welding will be too large , leading to ignition of the weld, or pits in the cold rolling of the extrusion of the weld, which affects the process performance of the weld. Under the condition, the mutual metal material particles infiltrate into the crystals to form a firm weld. If the extrusion pressure of the high-frequency welded pipe is small, the total number of crystals will be very small, and the compressive strength of the weld metal material will decrease, resulting in formation after compression. Cracks, if the extrusion pressure is too high, the molten metal material will be squeezed into the weld, which will not only reduce the compressive strength of the weld, but also cause a large number of internal and external vibration lines, resulting in repeated welds and other shortcomings.
During the entire forming process, the thick steel plate is uniform, the residual stress is small, and the surface is not scratched. After the high-frequency welded pipe is processed, it has a great coordination ability in the range of diameter and wall thickness specifications, especially for the production of high-quality thick-walled pipes. Tubes, especially for small and medium-sized thick-walled tubes, have incomparable advantages over other processes, and can meet customers' large demand for high-frequency welded tube specifications and models.
The selection of excellent front and back arc welding can keep the weld in a good position, and it is not easy to appear edge deviation, welding error, incomplete weld, etc. The welding quality is easy to control, and 100% of the high-frequency welded pipe is produced Quality inspection, reasonable inspection and network monitoring of the steel pipe production process to ensure product quality reasonably. The machinery and equipment of the production line have the function of connecting with the computer data acquisition system, which can quickly maintain the transmission of data.
What are the advantages of high frequency welded pipes?
Compared with seamless pipes, the production of high-frequency welded pipes has the characteristics of strong continuity, high efficiency, and low cost. The proportion of welded pipes in the entire pipeline is also increasing. From the perspective of production efficiency and economic benefits, the production of high-frequency welded pipes has No pollution, low noise, no waste water and waste gas, circulating water cooling is used in production, which saves manpower, and only 5-8 people are needed for a single shift.
In terms of use, with the improvement of welded pipe welding and quality and non-destructive testing, the use of welded pipes is becoming more and more popular, gradually replacing seamless steel pipes, and the growth rate of welded pipes is faster than that of seamless steel pipes.
The high-frequency welded pipe process has advantages in many aspects. It has wide adaptability to the material of the tube blank and the size of the steel pipe. The high-frequency welded pipe can not only increase the welding speed, but also obtain a weld with a small heat-affected zone and good penetration. 
The high-frequency welded pipe unit can normally produce heterosexual pipes, and at the same time produce more square and rectangular pipes. Because the square and rectangular pipes have a large section modulus, they can withstand large bending forces, save a lot of metal, save processing time, and reduce component weight, so it has universal application in all aspects of industry and agriculture.