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Fused 3LPP Field Applied Coating System

A key offering within the GTS-PP product family, GTS-PP II uses Shawcor's unique, and patented, cross-linked polypropylene outer layer, along with a proprietary rapid-activation polypropylene copolymer adhesive and advanced liquid epoxy layer to deliver protection that far exceeds minimum industry standards, such as ISO, while offering significant installation advantages over the highest performing PP systems, that require higher installation temperatures.

Lower Temperature 3LPP Coating Technology

GTS-PP II provides 3LPP protection with the following components:

  • Polypropylene Top Coat offering the hardness, mechanical protection and resistance to moisture absorption typically required for pipelines utilizing polypropylene coatings
  • High Temperature Epoxy on the Steel providing proven resistance to corrosion and to cathodic disbondment while allowing for relatively low installation temperatures when compared to other systems.
  • Rapid-activation PP Copolymer Adhesive bonding the polypropylene top coat to the epoxy layer and fusing to the 3LPP factory-applied coating where the joint coating overlaps with the lowest possible installation temperatures.

Fuses with the lowest installation temperatures

  • GTS-PP II fuses to the 3LPP factory-applied coating while requiring the lowest installation temperatures in the industry. The system can be installed directly and very efficiently by pipeline contractors in an efficient and controlled manner, using uniform induction heating technology. GTS-PP II is also available in elevated thickness and with engineered features, such as the Patented Reduced Edge Thickness Design , which promotes a completely uniform and fused system and which further minimizes installation time by reducing unneeded extra coating thickness at the overlap area.

Available with full automation

  • This advanced coating technology is also fully compatible with Canusa-CPS' patented innovation, the IntelliCOAT system, which automates the installation of heat shrinkable pre-extruded coating systems, such as GTS-PP II. When combined, these technologies deliver consistent in-field application and full repeatability with improved safety and can even offer significant productivity and cycle time improvements.

Patented Technology

  • GTS-PP II's cross-linked PP technology and Reduced Edge Thickness Design are patented in North America and throughout Europe and the rest of the world.

Product Properties

Sleeve Operating Characteristics Test Method Typical Values
Pipeline Operating Temp. Up to 120°C (248°F)
Minimum Installation Temp. 170°C (338°F)
Mainline Coating Compatibility PP, FBE
Resistance to Circumferential Forces excellent
Resistance to Soil Stress excellent
Resistance to Axial Pipe Movement excellent
Adhesive Properties
Lap Shear @ 23°C EN 12068 > 500 N/cm2
Lap Shear @ 100°C EN 12068 > 100 N/cm2
Density ASTM D792 0.93 g/cm3
Melting Point ASTM D3418 > 140°C
Backing Properties
Tensile Strength @ 23°C ASTM D638 28 MPa
Elongation at Break @ 23°C ASTM D638 425%
Hardness ASTM D2240 65 Shore D
Volume Resistivity ASTM D257 2 x 1017 ohm-cm
Density ASTM D792 0.93 g/cm3
Water Absorption @ 23°C, 24 hours ASTM D570 0.2%
Low Temperature Brittleness @ -40°C ASTM D746 pass
Sleeve Properties
Impact NFA 49-711 10 J/mm
Indentation @ 110°C (230°F) DIN 30678 0.4 mm
Cathodic Disbondment @ 23°C, 28 days ASTM G8 < 3 mm
Cathodic Disbondment @ 120°C, 28 days ASTM G42* < 3 mm
Peel Strength @ 23°C NFA 49-711 > 150 N/cm
Peel Strength @ 100°C NFA 49-711 > 70 N/cm
Peel Strength @ 120°C NFA 49-711 > 25 N/cm
Holiday Detection NFA 49-711 25 kV
Hot Water Immersion @ 95°C, 28 days CSA 1
Thickness S
Backing (nominal thickness as supplied) 1.27 mm (0.050")
Adhesive (nominal thickness as supplied) 1.57 mm (0.062")

* ASTM G42 Test Method modified to suit testing @ 120°C (248°F)

Applications / Assets

  • Gas Pipelines
  • Girth-Weld Joints
  • Oil Pipelines


Last Updated: 12/18/2017 3:41:41 PM
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