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HomePipe Coating Solutions Products Factory Grade PP Repair Products

Factory Grade PP Repair Products

Polypropylene-based coating repair products for corrosion protection

Canusa’s Factory Grade PP Repair Products for factory-applied 3LPP coating provide excellent adhesion and shear resistance at high pipeline operating temperatures.

The polypropylene repair patch has been uniquely designed to be fully compatible with the polypropylene pipeline coating. The melt stick and the adhesive filler are also made from polypropylene for maximum compatibility. These aspects ensure compatibility throughout the range of Canusa products offered.

Coating Repair Patch (CRP-PP)

  • Delivers mechanical protection and resistance to moisture absorption by fusing to the factory-applied coating that surrounds the damaged area
  • Provides an excellent barrier to corrosion and is resistant to abrasion and shear forces during pipeline construction and while in service

PP Melt Stick

  • Used to fill larger damaged areas in the coating prior to patch application or as a repair for minor coating damage

PP Adhesive Filler

  • Supplied as a filler material to fill voids prior to the application of Canusa’s CRP-PP repair patch. It can also be used to repair the mainline coating

Liquid Epoxy

  • Acts as an initial corrosion protection layer for major repairs when the damaged area extends to the steel surface
  • Unique force cure technology ensures consistent thickness prior to installation of the adhesive filler material and repair patch.

Product Properties

Operating Characteristics of Repair Products Standard Typical Values
Pipeline Operating Temp. Up to 140°C (284°F)*
Minimum Installation Temp. 140°C (284°F)**
Mainline Coating Compatibility PP
Adhesive Properties (CRP-PP, PP Adhesive Filler & PP Melt Stick)
Melting Point ASTM D3418 147°C
Lap Shear @ 23°C EN 12068 > 500 N/cm2
Lap Shear @ 110°C EN 12068 > 100 N/cm2
Backing Properties (CRP-PP Backing)
Tensile Strength ASTM D638 28 MPa
Elongation ASTM D638 425%
Hardness ASTM D2240 65 Shore D
Volume Resistivity ASTM D257 2 x 1017 ohm-cm
Patch Properties
Impact Resistance ISO 21809-1 10 J/m
Adhesion Strength @ 110°C ISO 21809-1 40 N/cm
Cathodic Disbondment @ 23°C, 28 days ISO 21809-1
< 3 mm
Cathodic Disbondment @ 23°C, 28 days ISO 21809-1 < 7 mm
Hot Water Immersion @ 95°C, 28 days ISO 21809-1 Pass, no disbondment

* Actual temperature rating is dependant on specific project requirements and conditions. Please consult your local Canusa representative.

** Canusa-CPS recommended installation temperature.

† CRP-PP installed with Canusa Liquid Epoxy. Epoxy is required when damage extends to steel.

Applications / Assets

  • Gas Pipelines
  • Offshore, Reel, J & S Lay
  • Oil Pipelines
  • Repair and Rehab


Last Updated: 12/18/2017 3:43:05 PM
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