Carbon steel insulating joint, carbon steel insulating joint price

规格：

DN600

(Manager Liu Xiaolei) The insulating joint is an updated product that has been improved based on the problems existing in the use of the insulating flange. It is an indispensable and important pressure component in the cathodic protection system of steel pipelines and is widely used in the cathodic protection system of steel pipelines. Our company's insulating joints refer to the latest foreign product structure and adopt a unique design, which overcomes the shortcomings of the insulating flange such as low rigidity, easy leakage, inability to be buried underground, and short lifespan, etc., and realizes the maintenance-free function of buried underground, making the use of insulating joints more convenient. The service life is the same as that of the matching pipeline. The integral insulating joint is composed of the following parts: upper and lower tubes, sleeves, insulating parts, seals, and insulating coatings. The upper and lower pipes of the insulating joint are butt-jointed end-face pieces, and are sandwiched between insulating pieces and sealing pieces to form a double-sealing structure with insulating properties. Technical characteristics: Dimensions and specifications: ~
Pressure level: .~
Service life: the same as pipelines
Insulation joints are indispensable and important pipeline accessories in gas distribution and oil pipeline systems. They are mainly used. For gas transmission and distribution systems and gas pressure regulating stations, its function is to insulate and isolate each section of the gas transmission and distribution pipeline, the gas pressure regulating station and the transmission and distribution pipelines, protect them from electrochemical corrosion, extend their service life, and also Can be used directly buried in the ground. Our company's integral insulating joints are designed based on comparison, analysis, and research with foreign products, focusing on the leakage problems that often occur in my country's gas transmission and distribution pipelines. Applicable media for insulating joints: oil, gas, water, chemical raw materials, and mineral slurries
The materials used in insulating joints meet the following requirements:
Sealing materials: shaped or shaped sealing rings: fluorine rubber, nitrile butadiene vinyl rubber, conforms.
Filling material: cold-setting resin
Insulation coating imported liquid epoxy resin
Anti-corrosion material: heat shrinkable anti-corrosion material
Insulation material: high-strength epoxy resin and glass fiber layered Compliant materials:.
Bending strength: Longitudinal and transverse
Tensile strength: Longitudinal and transverse
Compressive strength:
Water absorption:
Resistance after water immersion*
Breakdown voltage< br/> Combined steel body: , B, , Insulated joints Chemical corrosion of water on pipelines
Reason 1: Chemical corrosion of water on pipelines
The main chemical component of pipelines is iron, due to the high reactivity of iron Because of hydrogen, the pipeline undergoes the following oxidation reaction with oxygen in the air after contacting water:
+rr
It is rust, and the pipeline has been corroded at this time.
Therefore, before laying pipelines, the pipelines are coated with anti-corrosion paint to minimize the above-mentioned chemical corrosion.
Reason 2: Chemical corrosion of pipelines by electric current
As fluid flows in pipelines, friction will generate static electricity. At the same time, the earth and space also contain charges, and iron, the main component of pipelines, is a good conductor. As mentioned above Static electricity will create a voltage in local pipelines. This voltage is enough to ionize iron to form iron ions (+++). 3Insulation joint/>