The insulating joint field trial specimens only a few square centimeters large. Only form of micro-batteries in these specimens. But the maximum perforation rate in the table is greater than the average thickness at the expected rate. Sand and clay to do with the battery experiments yielded similar results. Only the surface area ratio Sc / Sn greater than 10:00 16Mn insulating joints prices only occur battery effect. In sandy soil, salinity affect the conductivity played a more important role. When the estimated lifetime of the pipeline and storage tanks, the table may be used in the maximum puncturing rate. If for shallow pits or pitting leakage occurs, these components will lose effectiveness. Insulating joint experimental data show that soil erosion greatly affected soil resistivity. Distribution curve along the weld joint or from the use of conductive socket connection pipe soil resistivity is very easy to identify the resistance of large diameter anode quality insulation joints, making it easy to pinpoint the location of erosion exacerbated site. They almost larger area in a higher resistance of the minimum resistance is the same. Assessments on non-ferrous metal alloys generally suitable for hot-dip galvanized steel. Corrosion products mask table plays a beneficial effect in terms of limiting the corrosion of zinc. This greatly slows down the formation and development of the anode region. From the sum of the corrosion evaluation level can also estimate whether the formation of the surface film. If more than the pitting potential of stainless steel in the soil would be pitting against. Considerable non-alloy steel in contact with the cathodic protection provided for Uh <0.2V. Copper is also very corrosion resistant stainless steel insulated connector manufacturers, only in very acidic soil contamination or corrosion will occur in severe. To achieve low leakage load must be reduced in direct contact with the earth (i.e. to reduce the impact of the pipeline and connected to earth). To this end, the pipeline coating insulating joints should be used, and to avoid and prevent those devices have a low incidence of resistance to ground electrical connection. In order to achieve a low leakage loading pipe, it is first necessary to use a sufficiently high resistance coating. Corrosion layer receives damage during construction or heat occurring in the construction and operation of the impact load increase will cause leakage. Information about the application of steel pipe coating is detailed references. May receive greater stress in the pipe coating places (such as pipes and more stones in the region), if no additional protective measures, it is necessary to choose more resistant to penetration momentum and anti-corrosion layer. Important considerations are: (1) increase the thickness of the coating; (2) an additional layer on the asphalt tape bandage pipe coating; (3) anti-rock damage layer; (4) for the additional fiber cement cladding layer; ( 5) To prevent the roots, roots pierce the coating can be used polyethylene, epoxy, polyurethane tar or polymer adhesive tape. If contact with low resistance grounding device, low leakage loading pipeline coating quality will be offset. This happens in the use of electric valve custody transfer stations, tubular annular space between the casing and the concrete structure, internal connections and valves bearings, as well as on the external lines and cables. To take measures to avoid such contact in the structure. Insulating joints _ large-caliber high-quality insulating joints _ Hebei billion gold piping insulation joints specializing in the production of gold provided by Hebei billion pipeline. This information consists of: providing Hebei billion Gold Pipe Manufacturing Co. (www.yijinguanjian.com), we are business alliance member, the integrity of the whole network authentication provider. Feel free to contact us, contact: Alan Li Tong