Insulatingjoint which is different from insulating flange achieve connection through welding(appendix A).
与绝缘法兰不同的是，绝缘接头的左法兰和勾圈是通过焊接实现连接的。
2
Insulatingjoint is the important equipment of cathodic protection which is used in the system of pipeline, and instead of insulating flange.
绝缘接头是管道系统中阴极保护的重要装置，它是绝缘法兰的替代品。
3
According to the research the main question is that the high temperature of the welding make rubber seal O-ring spoiled, the insulatingjoint become waste product.