Do you know about the insulating joints of natural gas and oil pipelines?
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Just like the title! Are there any specific laying requirements? Except for a few specific areas, are there any regulations on specific kilometers? What is the current status of domestic technology and production?
Insulation joints have nothing to do with the number of kilometers laid. They are only used in situations where electrical insulation is required, such as where pipes emerge from the ground and at the junction of different cathodic protection pipes. There is no problem with the domestic technology and production of this thing. I have never heard of anyone specifying the purchase of imported insulating joints.