Virtually all use of corrosion industrial metal insulated joints are formed surface film, Houma power plant annex, and these surface films are formed by the solid corrosion products. The protective effect of the surface film is essential, they should be of sufficient thickness and uniformity, can withstand the shift reaction was partitioned between the metal and the media. In ferrous metals and many other metals, electronic conductivity in the surface film is much higher than the ion conductivity. Thus, limiting cathodic redox transfer received much less restrictions than the metal ions. Cathodic reaction occurs not only the interface between the metal parts of the media, but also surface and interface mask and the media, once again, the surface of the membrane to form a reaction product OH-, and increase the PH value of the medium. For most metals, which will reduce the solubility of the surface film. Contributed two reactions on non-covered area known as a metal surface. Such coverage area depending on the presence or absence of the formation of metal surface corrosion products actually, depending on the beginning of the medium or from a distance whether the formation of the solid oxide. Depending on the circumstances of each part involved in the reaction can answer this question. Ja represents a metal ion forming rate, annex plant, Jx is involved in the transfer rate of the reaction components, which leads to the formation of a surface film. When Ja> Jx, the annex Linfen Power Plant, in the medium will precipitate occur. For more information about small caliber insulated joints: joints are mainly used in small-caliber insulation between devices, Hebei Power Accessories and gas regulator gas transmission and distribution pipelines, metering, storage, etc., whose main role is to each segment between gas transmission and distribution pipelines, between equipment and piping are insulated isolation, to protect them from chemical corrosion and extend the service life of piping and equipment. Product complies with SY / T0516-1997 "insulating flange design technical requirements" standard. Small caliber insulation joints according to the different insulating seals into specific pressure seal type insulating flange (referred to I type insulating flange) and tightly sealed type insulating flange (referred to Type II insulating flange) Two Self. Features: 1, with electrical insulation properties of buried pipeline corrosion protection of electrical engineering required. 2, long-term and reliable work requirements under the pipeline medium temperature, pressure, there is sufficient strength and sealing performance. 3, reasonable structure, assembly, disassembly, easy to replace parts Kaifeng Power Plant _ Accessories _ Accessories Bo Yan Pipe Industry (view) provided by the Yanshan Xian Yan Bo Industry Co., Ltd. Yanshan County Bo Yan Pipe Co., Ltd. (www.czbygy.com) Hebei Cangzhou, elbow leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Bo rock pipe industry leadership with the staff warmly welcome all inquiries negotiations to create rich rock pipe industry a better future.