Insulated flange is a general term for pipe flange joints that have both the sealing performance required by buried steel pipes and the electrical insulation performance required by electrochemical corrosion protection projects. The utility model comprises a pair of steel flanges, an insulating seal between the two flanges, a flange fastener and an insulating part of the fastener, and a pair of steel short tubes welded to the two flanges respectively.
      Insulating flanges and insulating joints are products produced for petroleum, chemical and other industries. They are simple in structure, safe in use and reliable in performance, and have been widely praised by users. Insulating flange products have formed a series, when there are special circumstances, can be separately designed and manufactured according to user requirements.