1. Magnetic automatic cutting machine:
In the case of poor steel tube ellipses, the magnetic car is walking along the wall of the tube, and the walking path changes, especially the large -caliber steel pipe. It is difficult to maintain the ellipse degree after welding, and the cutting effect is not good. In the case of coating, the magnetic force is reduced, the self -weight cannot be overcome, and the magnetic force cannot work. When cutting the spiral tube, the magnetic force is also easy to fall down mainly because the magnetic field changes suddenly. The magnetic car is easily fell off at the welded seam of the spiral tube.
2. Chain automatic cutting machine:
The chain automatic cutting machine overcomes the shortcomings of the magnetic automatic automatic cutting machine cutting. However, there is a gap between the chain section and the section. The use of the chain as the track is difficult to ensure the cutting accuracy. The larger the diameter of the steel pipe, the greater the error.
3. Artificial manual gas cutting:
There are many uncertain factors, the cutting shape should not be controlled, and the cutting quality is poor.
