Insulating joints (or isolating joints or isolation joints) provide electrical isolation and cathodic protection in pipelines, storage tanks, and pumping stations where oil, gas, and water are the carrier fluids. Regardless of the application, insulating joints act as a positive leak-proof and durable block to prevent the flow of current in all piping systems.
Insulating joints protect pipelines from corrosion, thereby significantly reducing maintenance work and associated costs.
Monolithic insulating joints are coated to prevent corrosion and are 100% tested for hydrostatic, electrical, and weldability. Monolithic insulating joints provide electrical sectional and passive protection against corrosion and they are installed on inlet and outlet pipes, water meters, tanks, pumping stations, etc.
The monolithic insulating joint consists of the following parts: upper and lower tubes, sleeves, insulating parts, seals, and insulating coating. An insulating member and a seal are sandwiched between the butt ends of the upper and lower pipes of the insulating joint, forming a double-sealed structure with insulating properties. The sleeve is either slotted and welded to the upper pipe or directly welded. The insulating member and the upper and lower pipes are firmly enclosed in a "sealed container", which not only ensures good insulating but also greatly improves the insulating pressure-bearing capacity of the structure.
The insulating joint is manufactured by forging the body, welding, painting, assembling, and testing the finished product.
It is fully assembled at the factory and is hydrostatically tested to 1.5 times its working pressure before shipment. In addition, each joint is electrically tested to verify its insulating ability. No maintenance or replacement parts are required throughout the life of the insulating joint.
The insulating Joint is a new-generation product developed to solve the problems associated with the use of older insulating flanges. It is an essential pressurized component of steel pipeline cathodic protection systems and is widely used in steel pipeline cathodic protection systems. insulating joints provide electrical isolation and cathodic protection in pipelines, tanks, and pumping stations where oil, gas, and water are the carrier fluids. Regardless of the application, insulating joints act as a positive leak-proof and durable block to prevent the flow of current in all pipeline systems.
Saving on the overall cost of a corrosive system is just one of the benefits of using this type of joint. Other benefits include protection from earth currents in domestic and industrial premises, isolation of pipeline cathodic protection systems, and ensuring that cathodic protection or stray currents do not lead to increased corrosion.
Pipeline insulating joints are used in onshore and offshore projects. It is used worldwide to permanently control the flow of electrical current or to electrically isolate sections of pipelines and pipeline systems. Effective management of cathodic protection projects. Suitable media: for oil, gas, water, chemical materials, and mineral slurries.
Avoid welding dead holes within 50m of the insulating joint installation site.
Once the insulating joint has been connected to the pipe, no lifting of the pipe is allowed within 5 meters of the joint.
Pressure testing with insulating joints and piping apparatus is required.
For further technical information talk with our specialist or visit our website https://www.changhaogroup.com. We can help you to identify the best solution for your application.
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