The insulation joint is composed by structure parts, insulating ring, filling material, sealing ring and short tube. It is fabricated by extruding and welding without any usage of bolt or flange. The insulating material and the seal ring are fixed in structural parts without relative movement with them, which ensures joints sealing capacity. The insulation joint works well under earth pressure, pipeline operating pressure and hydrostatic test.  

Insulating capacity: (by 1000v megohm meter) insulating resistance: ≥10MΩ,

                                      Breakdown voltage: ≥3KV.

Life: As long as the connected pipeline 

Intensity: pressure test ≥1.5PN (design pressure)

Operating temperature: -30--90

Insulating material: high intensity epoxide resin and epoxy phenol aldehyde glass cloth laminated board (3240)

Filling material: cold curing resin