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GTS-HT

Shrink sleeve for girth-weld protection of high operating temperature FBE coated pipelines.

The GTS-HT system provides superior corrosion protection and excellent bonding on FBE coated pipelines operating at temperatures up to 120°C (248°F) (actual rating may vary depending on local requirements).

GTS-HT sleeves consist of a thick crosslinked backing coated with a very high shear strength hot-melt adhesive. During installation the adhesive melts and flows, filling surface irregularities, and providing an excellent bond to metal and FBE coating.

Long Term Corrosion Protection

  • The adhesive/backing combination provides a protective coating with the structural integrity of a seamless tube. The result is effective, long term protection against corrosion

Rapid and Reliable Installation

  • GTS-HT can be installed with common equipment, including a propane torch. On large pipes over 760mm (30"), an induction or infrared heater is recommended
  • The required preheat is significantly lower than that required by other systems
  • The result is quicker installation, reduced labour costs, and higher production rates

Tough, Durable System

  • GTS-HT provides superior durability against abrasion, impact, penetration, and chemical attack

Flexible Installation

  • The GTS-HT closure has high shear strength adhesive inner layer. It is available in two configurations: attached to the sleeve or supplied separately

Product Properties

Sleeve Operating Characteristics Test Method Typical Values
Pipeline Operating Temp. Up to 120°C (248°F)
Mainline Coating Compatibility FBE, 2LPE, 3LPE
Preheat Temp. 150°C (302°F)
Resistance to Circumferential Forces excellent
Resistance to Soil Stress excellent
Resistance to Axial Pipe Movement excellent
Adhesive Properties
Softening Point ASTM E28 150°C (302°F)
Lap Shear @ 23°C ASTM D1002 > 900 N/cm2
Aleyska Shear @ 120°C TP-206 0 mm
Backing Properties
Tensile Strength ASTM D638 22 MPa
Elongation ASTM D638 500%
Hardness ASTM D2240 55 Shore D
Volume Resistivity ASTM D257 2.5 x 1018 ohm-cm
Specific Gravity ASTM D792 0.94
Dielectric Voltage Brkdwn ASTM D149 39 kV/mm
Sleeve Properties
Impact ASTM G14 14 J
Impact @ 120°C DIN 30672 pass
Cathodic Disbondment @ 23°C ASTM G8 < 3 mm rad
Cathodic Disbondment @ 95°C ASTM G42 < 6 mm rad
Cathodic Disbondment @ 120°C ASTM G42M < 10 mm rad
Penetration Resistance ASTM G17 pass @ 12 kV
Soil Stress Creep Resistance @ 120°C pass
Peel ASTM D1000 > 140 N/cm
Low Temperature Flexibility ASTM D2671-C -10°C
Fully Recovered Sleeve Thickness 2.5 mm
Thickness T
Backing (nominal thickness as supplied) 0.9 mm (0.035")
Adhesive (nominal thickness as supplied) 0.9 mm (0.035")

Applications / Assets

  • Gas Pipelines
  • Girth-Weld Joints
  • Oil Pipelines

Documentation

Last Updated: 12/18/2017 3:41:35 PM
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