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PIPELINE PERFORMANCE shawcor.com

PLA

Tubular sleeve for pipeline corrosion protection

The PLA is a heat shrinkable tubular sleeve designed for corrosion protection of buried and exposed steel pipelines.

PLA consists of a crosslinked polyolefin backing, coated with a protective heat sensitive adhesive which effectively bonds to steel substrates and common pipeline coatings including polyethylene and fusion bonded epoxy.

Rapid & Reliable Installation

  • PLA consists of a unique tubular configuration that has been factory constructed, resulting in a quick and reliable field installation.
  • PLA is manufactured with a specially formulated adhesive to accommodate demanding operating temperatures and soil stress conditions.

Long Term Corrosion Protection

  • PLA provides excellent resistance to cathodic disbondment resulting in effective long term corrosion protection.
  • The high performance crosslinked backing in combination with the specially formulated adhesive is engineered to have excellent resistance against temperature cycling, and chemical and environmental attack.

Saves Time & Money

  • With PLA’s unique construction, less time is required handling, positioning and installing separate closures.
  • This feature allows for a fast, simple and complete installation of the sleeve, with no primers required. This minimizes installation time and labour costs while promoting high production rates

Product Properties

Sleeve Operating Characteristics Test Method Typical Values
Pipeline Operating Temp.   Up to 55°C (131°F)*
Minimum Installation Temp.   60°C (140°F)
Main Line Coating Compatibility   PE, FBE
Adhesive Properties
Softening Point ASTM E28 72°C
Lap Shear @ 23°C ISO 21809-3 60 N/cm2
Backing Properties
Tensile Strength ASTM D638 20 MPa
Elongation ASTM D638 600%
Hardness ASTM D2240 46 Shore D
Volume Resistivity ASTM D257 1017 ohm-cm
Sleeve Properties
Adhesion Strength @ 23°C ISO 21809-3 35 N/cm
Impact Resistance ISO 21809-3 Pass
Indentation Resistance ISO 21809-3 Pass
Cathodic Disbondment @ 23°C, 28 days ISO 21809-3 13 mm rad
Low Temp. Flexibility ASTM D2671-C -32°C
Thickness
Backing (nominal thickness as supplied)   0.6 mm (0.025”)
* Actual temperature rating is dependant on specific project requirements and conditions. Please consult your local Canusa representative.

Applications / Assets

  • Gas Pipelines
  • Oil Pipelines
  • Waterworks Pipelines

Documentation

Last Updated: 1/31/2018 9:06:00 PM
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