Traditional welding method of welding is too fast and easy to repair, and so on, only the original welding of the place to be re - repair. And the groove pipe connection mode has a unique flexible characteristics, but also is this point to the entire pipeline in the event of accident, the pipeline has the ability to resist vibration, anti shrinkage and expansion. And most have the market competitiveness is groove tube used for the projects in the pipeline system stability enhancement, with temperature adaptability of optimal performance, so as to protect the pipe valves, also reduced the pipe stress damage to the structure.