There will not be a certain spiral pattern inside the transition joint that is consistent with the parts to be connected before installation, but some transition hose joints need to be manually welded to ensure the tightness of the connection. In hydraulic joints, a transition joint is usually required when the hose joint is connected. The transition joint plays a transitional role between the hard pipe joint and the oil port element and needs to be protected by an installer.
Welding is mostly due to the fact that the cutting is not very consistent between the two, but the PSP steel-plastic composite pipe transition joint also needs to be welded to ensure the sealing performance of the pipe. The first thing to do is to connect the pipe and when marking There must be a margin, and it is not completely marked according to the original. And clean the welding surface, and process the two places that need to be connected on the hot melt machine to ensure that the heating time and depth of the two sides are uniform and the same, and take care not to melt the nearby pipes.