Contact person: Li Chunpeng Tel: 13930752103 QQ:1327077391 insulation flange should have buried steel pipeline corrosion protection requirements of electrical insulation performance.
Insulation flange should be able to work under the pressure of the medium temperature, pressure, long-term and reliable work, with sufficient strength and sealing performance.
The structure of the insulated flange shall facilitate the assembly and installation of the insulating flange and the removal of the detachable parts in the installation state.
Each part of the insulating flange should be simple in structure, easy to manufacture, easy to obtain raw materials and low cost.
Insulation flange of the vulnerable parts replacement cycle, generally not less than four years.
In addition to the special circumstances, the flange of the insulation flange nominal diameter should be in accordance with the provisions of GB/T1047, nominal pressure shall comply with the provisions of GB / T1048.
The inner flange of the inner surface of the two flange shall be used as the inner coating treatment of the electric insulation material for the buried steel pipeline and the pipeline containing the conductive material.
Schematic diagram of insulation flange
I type insulation flange is only used for nominal pressure PN is less than or equal to 2.5MPa.
In the presence of a large bending moment, or the role of the external load of the pipeline, should not be equipped with insulation flange.
This standard is the general requirements for insulation flange, when the insulation flange design drawings have special requirements, should also meet the design requirements