In order to reduce the internal weld welding deformation, PA welding system using pulse welding current .PA welding jig and welding torch positioning device are connected with the GTA defend phase bureau. But for PA welding process evaluation to be more late, this time the size of the various components of the smaller fluctuations, and the jig is adjusted for the case of Pat the bellows to achieve the best carbon bellows, these welds penetration is more stable and consistent. Into the double-walled steel bellows filled with compressed gas snorkel eye and bellows through the air vent connected to an air vent snorkel eye a set of bellows welding installation process the first step is to insert the vent eye on the end plate 1 Inflatable of holes. Then the end of the vent pipe flaring. The bell is placed on ventilation eye. On snorkel equipped with a spring-loaded device so that the bell end of the pressure and close the vent eye to ensure that the welding process vent hole position of the eye does not move. First, the first weld seam pvc bellows, the air vent eye welding on the bellows, and the second track weld seam, the vent pipe is welded to the vent hole eye. Eye of pipe welds have to defend through investment requirements, but the requirements of the eye A weld a plate of complete penetration. Quality is the fundamental business survival and development, a library of products will use a variety of exquisite and gorgeous packaging, in addition to beautify the outside, but also serve to prevent soiling or damage to the product of magical. If the product does not have quality problems, the following issues in the transport storage installation process, will also affect the life of the product. (1) scratch pipe, so that the actual reduction in the effective use of the wall thickness of the pipe, the pipe pressure rating decreases. (2) long-term sun bellows, makes a certain degree of oxidation of the pipe, reducing its service life. (3) Installation gap is too large, long piping bellows prices Enthusiasm or not hot, artificially raise the system temperature. (4) When installing the pipe bend so that the formation of careless dead, affect the results and service life. Prestressed plastic corrugated pipes, bellows, by Xiong Xiong Thai-Thai-plastic products factory. Xiongxian-Thai plastic products factory (www.taiyusuye.com) strong, credible, in Baoding UPVC pipe industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving Xiongxian innovative ideas will lead Thailand into the brilliant buildings and you work for a better future!