Shandong Jiahe Machinery Co., Ltd.
Main products:Insulating joint,gas meter,filter separator,pig launching and receiving system,carbon steel pipe fitting,butterfly valve/ball/gate/check,diamond core drilling rig,water drilling rig,seismometer for earthquake observation system,letter sorting machine for
Contact Us
  • Contact Person : Mr. Yang Martin
  • Company Name : Shandong Jiahe Machinery Co., Ltd.
  • Tel : 0086-532-66711011
  • Fax : 0086-532-66711022
  • Address : Shandong,Qingdao,RM A-1-101&102,No.917 Tong'an Road,Qingdao,Shandong Province,China
  • Country/Region : China
  • Zip : 266071

Flange end insulating joint (flange end isolating Joint)

Flange end insulating joint (flange end isolating Joint)
Product Detailed
1, Insulating joint 2, Design pressure: 10~960bar 3, Pup: API 5L Gr.B~X80 4, Forging: A105, A694 F42~F80 5, Size: 1"~68"

Flange end insulating joint (flange end isolating Joint)Flange end, or BW endused in Gas Regulating and Metering station 


Insulating joint (Isolating Joint) is the key component in Cathodic Protection (CP) System. It is mainly used in underground gas transition and distribution system including gas reducing station, each section of gas transition and distribution pipeline, also the part between gas reducing station and the pipeline, which increase the life of the plant and equipment by reducing or eliminating the electric and chemical corrosion damage.


Ø         Suitable for oil, city gas, nature gas, LNG, LPG, etc.

Ø         Size:  1 to 56

Ø         Matching pipeline: API 5L Gr. B, X42, X52, X60, X65, X70, etc.

Ø         Pressure rating:  ANSI Class 150, Class 300, Class600, Class 900, Class1500, Class2500

Ø         Ambient Temperature: -20oC ~ +60oC

Ø         Working Temperature: -20oC ~ +120oC

Ø         Standard Testing: 

*  Hydrostatic test: 1.5 times MOP (Max. Operation Pressure).

*  Electrical Resistance:  ≥ 20M @ 1000v DC under dry air at 25 oC

*  Dielectrical voltage:  ≥ 3.5kv AC 50Hz (1 minute) (Can be 5kv as per request)

Ordering Information:

Please specify the following requirement:

*  Pipeline Diameter, Grade of pipe, wall thickness of pipe;

*  ANSI rating

*  Medium to be transported in pipeline and temperature of transported medium

*  Additional Testing required except standard testing: X-ray, ultrasonic & magnetic testing, etc.

Flange end insulating joint (flange end isolating Joint)

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