Monolithic Insulated Joints
Electrically Isolate
Prevent corrosion caused by stray electrical currents and interference from other pipelines
Overview
Insulated Joints (also referred to as "Isolation Joints" or "Insulating Joints") are available in sizes ranging from 2" through 48" and pressure ranging from ANSI 150 to ANSI 900.
TUBE TURNS® Monolithic Insulated Joints electrically isolate sections of pipeline to prevent corrosion caused by stray electrical currents or interference from other pipelines and power transmission cables.
The weld end hubs of our Insulating joints are provided in compliance with the customer's piping specification. Optional extra-length pipe pups (provided by the customer) can be included in the completed joint.
Technical Specifications
Comprehensive range of sizes and pressure ratings for various pipeline applications
Size Range
2" through 48" diameter
Pressure Range
ANSI 150 to ANSI 900
Design Type
Pre-fabricated, non-separable, bolt-less
Testing Pressure
1.5 times working pressure
Standards Compliance
Customer piping specifications
Maintenance
No maintenance required
Electrical Isolation Features
Three key features ensure complete electrical isolation across the joint
Insulating Gasket
Prevents metal-to-metal contact across the joint
Dielectric Compound
Internal cavities filled with special dielectric compound
Non-Conductive Coating
Two coats of non-conductive epoxy paint on internal and external surfaces
Design Advantages
TUBE TURNS® Monolithic Joints feature superior design for reliability and ease of installation
Single-Piece Construction
Simplicity of installation with no assembly required
Maintenance-Free
No maintenance required for entire service life
Superior Strength
Physically stronger than the pipe to which it is attached
Factory Tested
Hydrostatic and electrical testing before shipment
Monolithic Design
TUBE TURNS® Monolithic Joints feature a pre-fabricated, non-separable, and bolt-less design to satisfy customers that require a single-piece construction for simplicity of installation, elimination of maintenance, and ease of final wrapping and coating after installation in the pipeline.
Pressure Fatigue, Torsion and Bending proof testing of the design was carried out to provide a design that is physically stronger than the pipe to which it is attached.
Each joint manufactured by TUBE TURNS® is completely factory assembled and hydro-statically tested to 1.5 times the working pressure before shipment. In addition, each joint is electrically tested to verify its insulating capability.
Quality Assurance & Testing
TUBE TURNS® is fully qualified to provide comprehensive in-house testing and examination services
Applications
Critical protection for pipeline integrity and corrosion prevention
Corrosion Prevention
Prevents corrosion caused by stray electrical currents
Pipeline Isolation
Isolates sections from interference by other pipelines
Power Line Protection
Prevents interference from power transmission cables
Cathodic Protection
Essential component in cathodic protection systems
Industry Terminology
These connections are known in the pipeline industry by various terms:
Construction Details
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Technical Literature
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