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MONOLITHIC INSULATION JOINTS

Monolithic insulation joint is a boltless structure that provides electrical resistance between the pipeline sections and adjoining structures, thus improving the effectiveness of the Cathodic Protection System (CP systems).

   

 

Range  
Size 1” to 48”
Class From ANSI 150 to 2500
Design Temp  
Normal Temp -46°C to 95°C.
High Temp Up to 250°C (On Customer request)
Pressure  
Design Pressure As per ANSI B16.25
Test Pressure 1.5 times X Design Pressure
Standard Features  
Insulating Ring ASTM D709 G10 TY IV
Seals Nitile / Viton
Coating Epoxy Resin (Min 200µ)
Service Sweet / Sour
Location Onshore / Offshore
Suitable Below / Above Ground
Metallic Parts  
Rings ASTM A105, ASTM A694, F42 - F70
Pup Pieces API 5L GrB, X42-X70, ASTM A106 GrB, ASTM A333 Gr6
Electrical Features  
Di – Electric Strength 5 KV 50 Hz AC for 1 Min
Insulation Resistance Min 1 Mega Ohm @ 1000V DC

 

Standards
  • Design : NACE, ASME Scc VIII, Shell
  • Calculations : As per ASME Sec VIII
  • Welding Procedure : As per ASME Sec IX, API1104, DNV710105

 

Testing
  • Hydrostatic Test
  • Pneumatic Test
  • Fatigue Test
  • NDE examinations
  • Electrical Test:
  • Insulation Resistance Test @ 1000 Volt DC
  • Di Electric Strength Test up to 5000 Volt 50 Hz AC

 

Special Test
  • Helium Leak Test
  • Holiday Test
  • Adhesion Test
  • Flange Displacement Test

 

Details required on enquiry
  • Size & Rating
  • Mating Pup Piece Details
  • Materials (Pup /Body/Insulating Material)
  • Design & Test Pressure
  • Design Temperature
  • Service
  • Location
  • Quantity

 

 
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IGP ENGINEERS PVT LTD
#79, Valmiki Street, Thiruvanmiyur
Chennai - 600 041.
Ph: +91-44-24420608 / 24424804
Fax: +91-44-24405152
Email: igp@vsnl.com
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