Welcome to Hebei million gold piping, insulation joints of large diameter [standards], insulating joints provided by Hebei billion gold piping. We are Hebei billion gold Pipe Manufacturing Co., Ltd. (www.yijinguanjian.com) here: Hebei Cangzhou specializes in: insulation joints, insulating flange, flanges, elbows, head, tee, head, Stone, Steel where the presence of stray current, insulation joints must be multiple measurements insulating joints, they continuously change over time, while also changing each other. This situation is most suitable retest recorder. Potential measurements can not directly display the measurement results of the linear recorder, because torque mechanism is too small to overcome the friction pen on paper. Record the potential use zoom recorder or potentiometer recorder. Then zoom logger, and amplifies the voltage meter, as measured signal is converted into a load-independent operator applied current superior quality stainless steel insulated joints, and sent to the measuring mechanism which includes a torque motor and preamplifier. The amplifier produces an increase in torque to achieve a response time of 0.5s, the recording pen has the required operating pressure. Zoom recorder requires approximately 3W energy. Stray current interference in the measurement of insulating joint potential when stray current drain points are usually built in pipe conduit ground where the most positive. When the stray current is cut off, the rapid establishment of stray current flowing through the positive potential, which is not without potential IR drop. In the distance, the measured current flowing through the stray a negative potential, it is not without IR drop. Only when the stray current source does not work, will it be possible stray currents measured in areas without IR drop tube ground. To avoid potential than the protection potential corrections, stray currents in the region of the tube is set to ground potential than no stray current device where the negative is much safer to do so. According to the records of large diameter insulated joint standards, can go to the top when the stray current source does not work, what should be measured without IR drop in the tube at ground potential. If actual measurements at these points more negative than the potential protection potential can imagine that there are adequate cathodic protected. In order to estimate the pipeline cathodic protection current occurs during stray IR sources will work without the tube ground potential, with the polarization test probe to obtain the true polarization state insulating joint comprehensive analysis Description Brand: See the list of operating temperature range: see list (℃) Friction coefficient: See List Wear: See the list of anti-collision strength: see list (MPa) Material: See the list of pipe diameter: DN25-DN800 (mm) Pipe thickness: See list (mm) Applicable fluid: see list Series Insulation insulated joint is the joint definition of both the sealing performance of buried steel pipeline requirements collectively strength properties and electrical insulation properties required corrosion pipe joints. It comprises a combination of parts, insulated panels, packing, sealing ring, the short pipe. It is an alternative to insulating flange. Special insulation joints with the overall structure of extruded insulation joints welded steel price in the form of not using bolt flanged. Insulation and sealing the joint with the insulating material sandwiched and fixed to the sleeve (assembly) in the form obtained. After assembling insulating joints, to the internal components should be fixed at the appropriate location. Pressure in the soil, and the provisions of the plant was operating pressure pipeline was pressure tested or field, the entire insulation joints intact. Insulating joint sealing element against the insulation plate inside the joint, with a permanent too flexible, and both sides of the sealing element does not move in direct contact with the bare metal surface, ensuring the tightness of the joint. Product features good insulation: 2500V shake table testing insulation resistance ≥ 200MΩ, the breakdown voltage ≥ 3KV. Long life: the pipeline with life, such as strength. High intensity: Pressure test ≥ 1.5PN (design pressure). Operating temperature: -30 ℃ - +90 ℃. Applicable medium: oil, gas, water, chemicals, coal slurry, etc.